Visit this site to answer the question below:
http://www.geocities.com/Heartland/8833/coloreye.html
1.What numbers do you see ?
Visit this site to answer the question below:
http://kie.berkeley.edu/KIE/web/hf/index.html
2. How far does light go?
3.
Tuesday, June 3, 2008
Tuesday, April 1, 2008
Webquest : Safety Measures in Road Vehicles
Webquest
Safety Measures in Road Vehicles
Design for High School Physics Students
Authored by:
Ronor P. Escabarte
Safety Measures in Road Vehicles
Design for High School Physics Students
Authored by:
Ronor P. Escabarte
Introduction
If you look at the streets, you will see vehicles of different designs. You and your classmates have ridden in any one of them. You may even have a ‘favorite’ jeepney or school van on your way to school.
In this webquest, you will look at the road vehicle from another angle: its safety features. A well-designed vehicle should incorporate many safety features.
The Task
Before going out to do your survey, you have to sit down with your group mates to decide on the answers to the following questions. The following questions, however, are especially relevant to the Web Quest and are therefore required as a part of the evaluation process.
Which road vehicles will you include in your survey? Jeeps only, school buses only, or all types of road vehicles? Brainstorm your problem and possible scenarios for each of the cars. Scenarios should include: A crash into a more/less massive vehicle, a crash involving a stationary and moving vehicle, being front-ended and rear-ended by another vehicle, etc. Base your outcomes on your present knowledge and understanding of the areas of study given. Students should be able to decide which cars are safest in an accident, which cars are unsafe, and explain their reasoning.
What are the passive and active safety features mandated by the Land Transport Franchise Regulatory Board (LFTRB) or by transport rules? Why are these features necessary? How are they enforced?
After deciding on the issues mentioned above, you could carry out car safety features either by examining vehicles you ride on to school, or other vehicles in your own time. Decide upon which cars you would chose, and which cars you would definitely not drive in. Students should be able to give reasoning for their choice through the use of concepts from kinematics, dynamics, work, energy, and momentum. Diagrams and demonstrations/models of possible scenarios are encouraged.Expected Output:
Oral Presentation
Give a presentation to the class about what has been discovered over the course of the Web Quest, relating automobile safety to concepts from physics. Explain how one can ensure as much safety as possible while driving. Be sure to show the class the equations you have used during the Quest. Try to have fun in this part of the Web Quest; one suggestion is to include simple demonstrations of collisions using balls of different masses and velocities. The class should be encouraged to ask questions of the presenters.
Website Designing: Multimedia Presentation (Optional)
2. Assign students by group to make website or blog (if the school has an Internet connection) that promote road safety. This can be submitted one week or two weeks later.
Car Design
3. Imagine that you are now a car / road vehicle designer. From your survey and corresponding research, you will have gained ideas as to how cars will look in the future. You can use modeling clay to make a model of how a 2020 typical family car will look like. You can also make a sketch of the car.
The Process
1. Group students according to the roles they shall play in the webquest. Each group is consist of six members.
2. Agree among students the nature of their output. This would depend on the available resources. If your school has computers and access to the Internet then encourage students to prepare multimedia presentations. Posters can also be a good option.
3. Negotiate the time frame for students to work in groups and come up with their presentations. You may set specific tasks per day and check their progress. For example:
Day 1: Internet Research / Readings on assigned topic
Day 2: Hand in outline of presentation / topics covered
Day 3-4: Organize report (Prepare multimedia presentation)
Day 5: Actual Presentations
Students will have to agree who shall play for the following roles:
Roles
Responsibilities
Reporters (2 members)
Gather data about important features of vehicles in relation to road safety
You should give reasons for including the safety features that you mention and give evidence to back them up if you can.
Name the passive and active safety features mandated by the Land Transport Franchise Regulatory Board (LFTRB) or by transport rules.
Blogsite Designers(2 members)
Apply your skill in designing a blogsite which will promote road safety measures.
Engineers(2 members)
Be a creative road vehicle designer. From your survey and corresponding research, you will have gained ideas as to how cars will look in the future. You can use modeling clay to make a model of how a 2020 typical family car will look like. You can also make a sketch of the car.
Resources
Use the following sites to find more details on the physics of car crashes (students are not restricted to these sites. However, they are strongly advised to visit the sites featuring multimedia movies and demonstrations):
http://www.physicsclassroom.com/Class/momentum/U4L2a.html
http://library.thinkquest.org/10170/motion/index.html
Students were encourage to refer on this site since it demonstrates collisions between objects of masses and velocities that are adjustable by the viewer through the use of a Java applet.
http://hyperphysics.phy-astr.gsu.edu/hbase/seatb.html
A comprehensive site about the design of seatbelts and how they act to prevent injury. Includes a section explaining the difference in having a stretching and non-stretching seatbelt in the car via the use of the work-energy principle.
http://hyperphysics.phy-astr.gsu.edu/hbase/carcr.html
This site features a calculation program that allows students to calculate the incredibly large impact force upon a car when it crashes.
Road safety
http://www.transport.qld.gov.au/Home/Safety/Road/
http://www.roadsafety.com/
http://en.wikipedia.org/wiki/Road_safety
http://www.roadsafetyweek.org/index.php?p=110
Evaluation
You will be evaluated based on the knowledge that you have acquired through the research on Safety Measures on Road Vehicles.
Oral Presentation Rubric and Web Design
Your Name: _________________ Group Topic __________________________
Group Members:___________________________________________________
Oral Presentation Rubric
Possible Points
Self-Assessment
Teacher Assessment
Provided depth in coverage of topic.
10
Presentation was well planned and coherent.
10
Presenters were models of thoughtfulness. Personal experience integrated where relevant and appropriate. Explanations and reasons given for conclusions.
10
Communication aids were clear and useful. Handout was useful for others interested in topic.
10
Bibliographic information for others was complete.
10
Total Possible Points
50
Rate each category according to the following scale:
9-10 = EXCELLENT 7-8 = VERY GOOD 5-6 = GOOD
3-4 = SATISFACTORY 1-2 = POOR 0 = UNSATISFACTORY
Conclusion
This topic focuses on road safety. The knowledge base covers institutional responsibility of road safety, the development of a road safety action plan, raising awareness and understanding of road safety problems, road crash data systems, road safety education and training, traffic safety legislation, enforcement of traffic laws, and monitoring and evaluation of the effectiveness of road safety activities.
Tuesday, November 20, 2007
Electromagnetic Induction
FARADAY'S ELECTROMAGNETIC INDUCTION
Online Treasure Hunt
For High School Students Taking Physics (Science & Technology IV)
Online Treasure Hunt
For High School Students Taking Physics (Science & Technology IV)
By: Ronor P. Escabarte
MOGCHS Faculty
Introduction
There are many application of electromagnetic induction. For example, the cassette tape is a magnetized tape. When played on a cassette player, the tape moves over a tiny coil and a small current is generated. The current is made bigger by the amplifier and is eventually fed to the loud speakers.
Electric guitars have “pick-ups” which are actually rows of magnets with coils around them. This magnetizes the strings and when the string vibrates current is induced in the coils.
Electric generators, transformers, rechargeable batteries. These are just some applications of electromagnetic induction.
To introduce the day’s lesson, recall Oersted’s remarkable discovery. In 1820, Hans ChristianOersted, a physics professor discovered in a classroom demonstration that an electric currentdeflects a compass needle. This shows that current produces magnetic field.
“Can the reverse of this phenomenon happen? Can magnetic field also
“Can the reverse of this phenomenon happen? Can magnetic field also
produce current?”
In today’s lesson we will find out who discovered electromagnetic induction, what it is, and why it is considered “a landmark in applied science”.
The lesson requires you to browse through some Web pages in which you will find out something about electromagnetic induction. A series of questions will guide your reading. Answers to the questions can be found in the Web pages, which are listed at random (and not according to the order of questions). Write your answer on the provided answer sheet and submit it after your schedule laboratory time.
The lesson requires you to browse through some Web pages in which you will find out something about electromagnetic induction. A series of questions will guide your reading. Answers to the questions can be found in the Web pages, which are listed at random (and not according to the order of questions). Write your answer on the provided answer sheet and submit it after your schedule laboratory time.
You will work on by pair in answering the questions. Assign one member to take down notes and the other to write the answer in the provided answer sheet. Make sure you read between lines and be able to answer the questions accurately. Each question is 5 points each.
After successfully finding all the answers, move on to the Big Question.
Questions
1. Electromagnetic induction involves both electricity and magnetism. Which of the two is induced in the process and which one does the inducing? And what is another way of saying “to induce”?
2.In Faraday’s experiment, is it necessary to draw the magnet entirely into the coil? Why or why not?
3.Why is the principle of induction considered “a landmark in applied science”?
Consider the timeline of discoveries in electromagnetism (given in one of the websites below).
4.What is one insight you can form from looking at the timeline?
5. The invention of the dynamo was made possible by the discovery of electromagnetic
induction. What is the significance of the dynamo?
6.What invention by Faraday is the precursor of the modern transformer?
7.What is one of the medical applications of Faraday’s discovery of induced currents?
Resources
http://www.regentsprep.org/Regents/physics/phys03/dinduction/indapart.htm
The Big Question
Form a group consisting of five members and design a simple activity on electromagnetic induction using the following materials: coil of wire, bar magnet and current detector. Sumbit your output for the big question on December 3, 2007
Monday, October 1, 2007
Writing An Investigatory Project
HOW DO WE WRITE THE RESEARCH PAPER?
by: Ronor P. Escabarte
Science Faculty, MOGCHS
A science investigatory project ends with a report. It is also known as the technical paper.
OUTLINE FORMA. TITLE- catch the attention
- concise
- accurate
- descriptive
- self-explanatory
The phrase “A Study to Show” should be avoided, because in research you do not seek to prove something, but rather to impartially find an answer.
B. ABSTRACT
- short paragraph of not more than 200 to 250 words
- gives the essential or principal features of the project study
- descriptive
- informative
C. INTRODUCTION
This section includes the following parts:
a. Background of the Study
- presents the reasons that led the investigator to launch the study
- a historical background maybe given
- may state some observations & other relevant conditions that prompted the investigator to
explore the problem
Some guide questions while writing this part of the paper:
- Why did I select this research project?
- Are there others who have done similar studies?
- What have the others done or not done that moved or spurred me to work on this problem?
- What are my own observations which are relevant to the study?
- Will the results of the study make any contribution in the attainment of a better quality of life?
b. Statement of the Problem/Objectives
- the nature & scope of the problem should be presented with clarity
Two Types of Objectives maybe stated:
1. General Objective – this is related to the problem as given in the early part
2. Specific Objective – this states the purpose of each experiment conducted
c. Significance of the Study
- the importance of the study is explained in this part
d. Scope and Limitations
- states the coverage and extent of the study
Example: from “The Effect of Christmas Palm (Veitchia merrilli) Fruits in Lowering Blood Sugar Level”
( Coverage)
The researchers brought a 2-month old puppy in the MCA clinic (Marlito C. Aruta)
for blood analysis. They used the fruits of Christmas palm collected from North Poblacion, Naga, Cebu.
(Limitation)
The study does not cover the idea of what would be the effect of the product in the case of diabetes. The study focuses on the effect of the product to the sugar level and if it could be
a possible cure to lower the level of blood sugar
e. Review of Related Literature
- Sufficient background information should be presented for readers to understand and evaluate the results of the present study and theories written on the topic should be included.
D. Methodology
- provides enough details so that a competent worker can repeat the experiments.
a. Materials/Equipments
-the exact technical specifications, quantities and source of method of preparation for all materials used should be given.
Specifically, built equipment used in the study must be described and the description accompanied by a picture.
b. Treatment/General Procedure
- the manner and sequence by which each experiment or set of observations were done or how measurement were obtained should be described in detail.
E. Results and Discussion
- this maybe divided into sub-sections describing each set of experiments or observations.
a. Findings – the data maybe presented in full and discussed descriptively in the text or these maybe summarized in tables, pictures & graphs.
b. Analysis of Data
- the interpretation of findings are discussed and the significant features shown in the tables, figures or graphs are pointed out.
F. Conclusions
- the general truth implied or illustrated by the results should be clearly stated. The evidence based on the results should be summarized for each statement.
G. Recommendations
- consists of suggestions on future actions such as a new direction of research or further experiments to be performed, practices that might be adapted or discarded in order to attain certain goals or objectives.
H. Bibliography – a list of the references used in guiding the research work and writing the paper.
Research Paper
The research paper should contain the following:
a.Problem/s
b.Objectives
c.Method & Procedures (described in detail)
d.Results
e.Conclusions & Recommendations
f.Bibliography ( at least 3 major references
ETHICS STATEMENT
Scientific fraud and misconduct are not condoned at any level of research or competition. Plagiarism, use or presentation of other researcher’s work as one’s own, forgery of approval signatures and fabrication or falsification of data or approval dates will not be tolerated. Fraudulent projects are disqualified for the competition.
Tips in the Format
-Must be typewritten in Times Roman style
-Double-spaced in short bond paper (8” x 11”), font size 11
-The Acknowledgement should contain the names of people and agencies that helped in the conduct of the work described.
-The Table of Contents lists the different parts of the whole report with the corresponding page number of each part. The wording and grammar of the chapter titles, heading and title of tables & figures should be consistent.
How do we PRESENT OUR INVESTIGATORY PROJECT In the Science Fair?
Qualifications of a Judge in the Science Fair
a. Holder of a bachelor’s degree with specialization in any of the scientific discipline.
b. Employee of any of the science agencies or cooperating agencies of the Science Fair.
c. May be a professor in a college or university but is not directly connected with any of the schools participating in the Science Fair.
d. Preferably must have had previous experience
as a judge in a Science Fair.
e. Must be an expert in his own field of discipline.
CRITERIA for JUDGING EXHIBITS/PROJECTS
A. The project develops the investigator’s capacities in the discipline of science & scientific endeavor.
1. Creativity, originality & resourcefulness---- 30%a. Does the project show the investigator’s creative ability in presenting the problem?
- the approach to solving the problem?
- the analysis and interpretation of data?
- the use of equipment?
b. Is the project a new design or a new combination of facts and processes?
- No project is original in all aspects, however, the credit for creativity and originality lies in the new idea shown in the work. This may include whatever innovations were introduced to an already known fact or process.
c. What evidence indicates that the investigator has shown cleverness in finding ways & means to workout his project.
2. Intellectual Honesty & other Moral Values 10%How honest is the project investigator in the preparation?
3.Thoroughness & Skill 30%a. As a whole, does the project answer the problems that initiated the study or research?
b. Does the project carry out its purpose to completion within the scope of its original aim?
c. How completely has the problem been covered in the project?
d. Are the conclusions based on a single experiment or on replication?
Thoroughness and Skill continued:
e. Is there available scientific literature in the selected field?
f. Are there other approaches or theories concerning the project?
g. How long did it take to finish the project?
h. Has the investigator emphasized important details?
i. Did the investigator compare and contrast the results obtained?
j. Have controls been used?
4. Clarity of Presentation
a.Is the problem stated clearly?
b.How sufficient are the data presented?
c.How clearly is the project discussed?
d.How was the oral defense of the project during the Science Congress?
B. The project contributes to the advancement of Science and Technology.
1. Applicability of Scientific Principles 20%a. Does the project utilize any scientific principle?
b. How often are the scientific principles used?
c. Is there already an existing device of the same kind that is used by the investigators? If there is, was it a modification or an exact duplicate?
Recipe for success: study while others sleeping; work while others are loafing; prepare while others are playing; dream while others are wishing.”
-William A. Ward-
by: Ronor P. Escabarte
Science Faculty, MOGCHS
A science investigatory project ends with a report. It is also known as the technical paper.
OUTLINE FORMA. TITLE- catch the attention
- concise
- accurate
- descriptive
- self-explanatory
The phrase “A Study to Show” should be avoided, because in research you do not seek to prove something, but rather to impartially find an answer.
B. ABSTRACT
- short paragraph of not more than 200 to 250 words
- gives the essential or principal features of the project study
- descriptive
- informative
C. INTRODUCTION
This section includes the following parts:
a. Background of the Study
- presents the reasons that led the investigator to launch the study
- a historical background maybe given
- may state some observations & other relevant conditions that prompted the investigator to
explore the problem
Some guide questions while writing this part of the paper:
- Why did I select this research project?
- Are there others who have done similar studies?
- What have the others done or not done that moved or spurred me to work on this problem?
- What are my own observations which are relevant to the study?
- Will the results of the study make any contribution in the attainment of a better quality of life?
b. Statement of the Problem/Objectives
- the nature & scope of the problem should be presented with clarity
Two Types of Objectives maybe stated:
1. General Objective – this is related to the problem as given in the early part
2. Specific Objective – this states the purpose of each experiment conducted
c. Significance of the Study
- the importance of the study is explained in this part
d. Scope and Limitations
- states the coverage and extent of the study
Example: from “The Effect of Christmas Palm (Veitchia merrilli) Fruits in Lowering Blood Sugar Level”
( Coverage)
The researchers brought a 2-month old puppy in the MCA clinic (Marlito C. Aruta)
for blood analysis. They used the fruits of Christmas palm collected from North Poblacion, Naga, Cebu.
(Limitation)
The study does not cover the idea of what would be the effect of the product in the case of diabetes. The study focuses on the effect of the product to the sugar level and if it could be
a possible cure to lower the level of blood sugar
e. Review of Related Literature
- Sufficient background information should be presented for readers to understand and evaluate the results of the present study and theories written on the topic should be included.
D. Methodology
- provides enough details so that a competent worker can repeat the experiments.
a. Materials/Equipments
-the exact technical specifications, quantities and source of method of preparation for all materials used should be given.
Specifically, built equipment used in the study must be described and the description accompanied by a picture.
b. Treatment/General Procedure
- the manner and sequence by which each experiment or set of observations were done or how measurement were obtained should be described in detail.
E. Results and Discussion
- this maybe divided into sub-sections describing each set of experiments or observations.
a. Findings – the data maybe presented in full and discussed descriptively in the text or these maybe summarized in tables, pictures & graphs.
b. Analysis of Data
- the interpretation of findings are discussed and the significant features shown in the tables, figures or graphs are pointed out.
F. Conclusions
- the general truth implied or illustrated by the results should be clearly stated. The evidence based on the results should be summarized for each statement.
G. Recommendations
- consists of suggestions on future actions such as a new direction of research or further experiments to be performed, practices that might be adapted or discarded in order to attain certain goals or objectives.
H. Bibliography – a list of the references used in guiding the research work and writing the paper.
Research Paper
The research paper should contain the following:
a.Problem/s
b.Objectives
c.Method & Procedures (described in detail)
d.Results
e.Conclusions & Recommendations
f.Bibliography ( at least 3 major references
ETHICS STATEMENT
Scientific fraud and misconduct are not condoned at any level of research or competition. Plagiarism, use or presentation of other researcher’s work as one’s own, forgery of approval signatures and fabrication or falsification of data or approval dates will not be tolerated. Fraudulent projects are disqualified for the competition.
Tips in the Format
-Must be typewritten in Times Roman style
-Double-spaced in short bond paper (8” x 11”), font size 11
-The Acknowledgement should contain the names of people and agencies that helped in the conduct of the work described.
-The Table of Contents lists the different parts of the whole report with the corresponding page number of each part. The wording and grammar of the chapter titles, heading and title of tables & figures should be consistent.
How do we PRESENT OUR INVESTIGATORY PROJECT In the Science Fair?
Qualifications of a Judge in the Science Fair
a. Holder of a bachelor’s degree with specialization in any of the scientific discipline.
b. Employee of any of the science agencies or cooperating agencies of the Science Fair.
c. May be a professor in a college or university but is not directly connected with any of the schools participating in the Science Fair.
d. Preferably must have had previous experience
as a judge in a Science Fair.
e. Must be an expert in his own field of discipline.
CRITERIA for JUDGING EXHIBITS/PROJECTS
A. The project develops the investigator’s capacities in the discipline of science & scientific endeavor.
1. Creativity, originality & resourcefulness---- 30%a. Does the project show the investigator’s creative ability in presenting the problem?
- the approach to solving the problem?
- the analysis and interpretation of data?
- the use of equipment?
b. Is the project a new design or a new combination of facts and processes?
- No project is original in all aspects, however, the credit for creativity and originality lies in the new idea shown in the work. This may include whatever innovations were introduced to an already known fact or process.
c. What evidence indicates that the investigator has shown cleverness in finding ways & means to workout his project.
2. Intellectual Honesty & other Moral Values 10%How honest is the project investigator in the preparation?
3.Thoroughness & Skill 30%a. As a whole, does the project answer the problems that initiated the study or research?
b. Does the project carry out its purpose to completion within the scope of its original aim?
c. How completely has the problem been covered in the project?
d. Are the conclusions based on a single experiment or on replication?
Thoroughness and Skill continued:
e. Is there available scientific literature in the selected field?
f. Are there other approaches or theories concerning the project?
g. How long did it take to finish the project?
h. Has the investigator emphasized important details?
i. Did the investigator compare and contrast the results obtained?
j. Have controls been used?
4. Clarity of Presentation
a.Is the problem stated clearly?
b.How sufficient are the data presented?
c.How clearly is the project discussed?
d.How was the oral defense of the project during the Science Congress?
B. The project contributes to the advancement of Science and Technology.
1. Applicability of Scientific Principles 20%a. Does the project utilize any scientific principle?
b. How often are the scientific principles used?
c. Is there already an existing device of the same kind that is used by the investigators? If there is, was it a modification or an exact duplicate?
Recipe for success: study while others sleeping; work while others are loafing; prepare while others are playing; dream while others are wishing.”
-William A. Ward-
General Applications: Electricity and Magnetism
Electric motors involve rotating coils of wire which are driven by the magnetic force exerted by a magnetic field on an electric current. They transform electrical energy into mechanical energy.
Answer the following questions by clicking on the link provided below each question.
1. How Does an Electric Motor Work?
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/mothow.html#c1
2. How does a DC motor works? Explain its operation.
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motdc.html#c1
3. How does an AC Motor differ from that of a DC Motor?
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motorac.html#c1
4. Will the bird on the high voltage wire be shocked?
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/watcir2.html#c4
5. Where will lightning strike?
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/lightning.html#c1
6. Cite a detailed discussion of the operation and application of a transformer?
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/transf.html#c1
7. What happen to the electric charge in household circuits?
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/hsehld2.html#c1
Answer the following questions by clicking on the link provided below each question.
1. How Does an Electric Motor Work?
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/mothow.html#c1
2. How does a DC motor works? Explain its operation.
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motdc.html#c1
3. How does an AC Motor differ from that of a DC Motor?
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/motorac.html#c1
4. Will the bird on the high voltage wire be shocked?
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/watcir2.html#c4
5. Where will lightning strike?
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/lightning.html#c1
6. Cite a detailed discussion of the operation and application of a transformer?
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/transf.html#c1
7. What happen to the electric charge in household circuits?
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/hsehld2.html#c1
Monday, September 17, 2007
Electromagnetic spectrum
websites about electromagnetic spectrum:
http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html
http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html
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