Energy Forms and Transformations

Master energy forms & transformations!

1. Read the examples below and classify (or sort) whether that example demonstrates objects with potential or kinetic energy. Potential Energy Rollercoaster at the top of a hill Stretched rubberband Football sitting on a field Amount increases with height Milk and a cupcake Energy of position Kinetic Energy Amount increases with speed Waves crashing against a rock Texting on a phone Wind blowing Dribbling a basketball or soccer ball Energy of movement 3. Chain of energy! Fill in the missing energy for the transformation shown.Use the terms: mechanical, radiant, chemical Spelling counts - type carefully! chemical mechanical radiant 4. Match each scenario with the energy transformation. solar cell radiant (solar) ---> electrical person running chemical -->mechanical (kinetic) flashlight chemical---> radiant (light) wind turbine (windmill) mechanical----> electrical hair straighten electrical----> thermal lamp electrical---> radiant (light) and thermal television electrical----> radiant, thermal, and sound 5. When a child swings on a play set, what energy transformation occurs? chemical to radiant electrical to chemical chemical to electrical chemical to mechanical 6. When a car's tires spin on the road, friction occurs and heat is generated. In this example, some of the mechanical energy is transformed into _ energy. thermal light electrical solar 7. 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 8. Energy cannot be created nor _, it can only be transferred or transformed to another form. found generated destroyed wasted Where did most of the energy we use on Earth originally come from? television the Sun the ground 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 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. Study the image. At which point does a roller coaster have the greatest potential, but least kinetic energy? F G H I Study the image. At which point does a roller coaster have the least potential, but greatest kinetic energy? F G H I If both vehicles are travelling at the same speed, which car has the most kinetic energy? the car the van the have equal amount of kinetic energy If both vehicles are parked, which car has the most potential energy? the car the van they have an equal amount of kinetic energy