Types of Energy
What type of energy is stored in food and batteries?
Chemical energy
What is the movement of heat from a warmer object to a cooler one called?
Heat transfer
When a ball is dropped, what happens to its potential energy as it falls?
It decreases and changes into kinetic energy.
What kind of energy is caused by moving objects?
Kinetic energy
What type of heat transfer happens when you touch a hot pan?
Conduction
Give one example of energy changing forms in a household appliance.
Example: A toaster changes electrical energy into heat and light energy.
A stretched rubber band or a compressed spring has what kind of energy?
Potential energy
Bonus points: elastic energy
What type of heat transfer happens in liquids and gases, like boiling water or air currents?
Convection
What does the law of conservation of energy say?
Energy cannot be created or destroyed, only changed in form.
What type of energy travels in waves and can move through space, like sunlight?
Radiant (or light) energy
What type of heat transfer happens through waves, like from the Sun to Earth?
Radiation
Why does a moving car eventually stop if no more fuel is added, even though energy can’t be destroyed?
Energy changes into heat and sound due to friction and air resistance.
When you turn on a lamp, what two forms of energy are produced from electrical energy?
Light and heat energy
A metal spoon in hot soup becomes warm from the bottom up. Explain which two types of heat transfer are involved.
Conduction (through the spoon) and convection (in the soup)
A roller coaster climbs a hill and then speeds down. Explain how energy is conserved during the ride.
At the top, it has maximum potential energy; as it goes down, that energy converts into kinetic energy—total energy stays the same.