Energy Test Study Guide

1. Read the examples below and classify (or sort) whether that example demonstrates objects with potential or kinetic energy. Potential Energy Amount increases with height Milk and a cupcake Energy of position Kinetic Energy Wind blowing Dribbling a basketball or soccer ball Energy of movement 3. Match each scenario with the energy transformation. Rock traveling down a hill potential to kinetic wind turbine (windmill) potential energy of the wind to mechanical to electrical lamp electrical to light to thermal hydroelectric plant potential energy of water to mechanical to electrical 4. This handheld game is powered by a battery. Which forms of energy are involved in the transformation of energy that takes place when the game is played? chemical electrical radiant (light) all of the above 5. Energy cannot be created nor _, it can only be transferred or transformed to another form. found generated destroyed wasted 6. How does the height of an object affect the amount of potential energy it has? The faster an object moves, the more potential energy it has. The lower an object is, the more potential energy it has The higher an object is, the more potential energy it has 7. How does the speed an object is traveling affect the amount of kinetic energy it has? The faster an object moves, the more kinetic energy it has. The slower an object moves, the more kinetic energy it has. The higher an object is, the more potential energy it has. 8. Study the image. At which point does a roller coaster have the greatest potential, but least kinetic energy? F G H I 9. Study the image. At which point does a roller coaster have the least potential, but greatest kinetic energy? F G H I 10. Study the image. At which point does the ball's mechanical energy equal its potential energy?Hint: The mechanical energy is the same as the potential energy. F G H I 11. The diagram below shows the motion of a ball while being dropped.What happens to the energy of the ball from where t= 0 seconds to when t= 5 seconds? Potential energy decreases and kinetic energy increases, but the total amount of mechanical energy remains the same. Potential energy increases and kinetic energy decreases, but the total amount of mechanical energy remains the same. Potential energy and kinetic energy both increase, and the total amount of mechanical energy increases. Potential energy and kinetic energy both decrease, and the total amount of mechanical energy decreases. 12. A large demolition machine is used to knock down a building.Which wrecking ball’s potential energy contributes to the mechanical energy that is needed to knock down a building? Remember the potential energy of an object is equal to the mechanical energy. #1 demolition machine’s wrecking ball #2 demolition machine’s wrecking ball #3 demolition machine’s wrecking ball #4 demolition machine’s wrecking ball 13. The diagram below shows a car on a roller coaster with four labeled locations.Between what two locations does the car’s kinetic energy transform into potential energy? W and X W and Y X and Y Y and Z 14. Some of the car’s potential energy is converted into kinetic energy. Some of the car’s kinetic energy is converted into potential energy. All of the car’s potential energy is converted into kinetic energy. All of the car’s kinetic energy is converted into potential energy. 15. The greatest potential energy is at the bottom of the swing. The lowest kinetic energy is at the bottom of the swing. The greatest potential energy is at the top of the swing. The greatest kinetic energy is at the top of the swing. 16. Match each scenario with the energy transformation. Bowling Ball potential to mechanical Cricket rubbing its legs to create sound mechanical to sound orange falls from a tree and hits the ground potential to kinetic to sound 17. A B C D 18. chemical to electrical to light electrical to chemical electrical to light light to electrical 19. In a closed circuit made of a battery, wire, a light bulb, and a switch, which component’s primary function is to supply energy? wire switch battery lightbulb 20. A B C D Select the image below that best represents your knowledge of this unit.