Thrilling Experiments: Potential and Kinetic Energy

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44 Fact Quiz Fill in the missing words Answer Key - After Viewing Quiz 1. The two main forms of mechanical energy are: ______________________________ potential ______________________________ kinetic 2. Kinetic energy is the energy of ___________________ motion . KE = .5 x m x v 3. What equation is used to represent kinetic energy? ____________________________________ 2 4. Explain what the formula means. one-half the mass times the velocity squared Joule 5. The standard metric unit of measurement for kinetic energy is the ___________________ . stored energy 6. Potential energy is ___________________ . 7. What equation is used to represent potential energy? __________________________________ PE = mgh 8. Explain what the formula means. mass times gravity times height 9. What is the energy of an object as a result of its motion called? ________________________ kinetic energy Thrilling Experiments: Potential and Kinetic Energy © Sunburst Visual Media, a division of Global Video, LLC
Answer Key - After Viewing Quiz Fact Quiz (cont.) Answer the following questions. 10. If a person tries to push a car that has its hand brake on and the car doesn’t move, is work being done on the car? No. Work is force x distance. However, if the car or the person’s hands become deformed while pushing, some work is done but it’s difficult to measure. 11. If the person manages to move the car a distance of 2 meters in 2 seconds by applying a force of 300 N in the direction of movement: How much work is done? 2m x 300N = 600 Joules 12. Gravitational potential energy is always measured in terms of an object’s position relative to another position. Relative to the floor, what is gravitational potential energy associated with a 10 Kilogram mass that is 2.5 meters above the floor? gravitational potential energy = mgh where m is the mass of the object in kg, g is the gravitational acceleration = 9.81 m/s and h is the height above a reference point 245.25 Joules 13. If the potential energy stored in a spring is equivalent to 300 Joules, how much work could it do? 300 Joules 14. If 200 Joules are used to wind up the spring of a clockwork motor, neglecting friction, how much work is done? 200 Joules © Sunburst Visual Media, a division of Global Video, LLC Thrilling Experiments: Potential and Kinetic Energy 45
Page 1 and 2: Teacher’s Guide Thrilling Experim
Page 3: Table of Contents Guide Information
Page 6 and 7: Program Overview Thrilling Experime
Page 8 and 9: Name Word Splash Each of these word
Page 10 and 11: Name Albert Who? The video you will
Page 12 and 13: Name Vocabulary Cloze Vocabulary wo
Page 14 and 15: Name Energy Basics In the video, de
Page 16 and 17: Name Energy Math Potential and Kine
Page 18 and 19: Name Energy Law In the space below,
Page 20 and 21: Name Vocabulary Match-Up Draw a lin
Page 22 and 23: Name Fact Quiz (cont.) Answer the f
Page 24 and 25: Extensions Additional Resources •
Page 26 and 27: Extensions • Soda Towers Have stu
Page 28 and 29: Suggested Reading List Additional R
Page 30 and 31: Internet Sites Additional Resources
Page 32 and 33: 32 Answer Key - Before Viewing Acti
Page 34 and 35: 34 Answer Key - Before Viewing Acti
Page 36 and 37: 36 Answer Key - During Viewing Acti
Page 42 and 43: 42 Heads Up! Answer Key - After Vie
Page 46 and 47: Script 46 CAST Tony “Thrill” Hi
Page 48 and 49: Script 48 JUNE This experiment need
Page 50 and 51: Script 50 TONY All right I have the
Page 52 and 53: Script 52 You need to repeat these
Page 54 and 55: Script 54 TONY Just like the one in
Page 56: Script 56 JUNE You got it, Tony. I

Thrilling Experiments: Potential and Kinetic Energy

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