What is Energy?
What is energy?
Energy is the ability to do work or cause change.
What is an example of potential energy?
A rock at the top of a hill.
What is energy transformation?
Energy changing from one form to another.
What is energy transfer?
Energy moving from one object to another.
What is the law of conservation of energy?
Energy cannot be created or destroyed, only transformed.
Name two forms of energy.
Kinetic and potential energy.
What is an example of kinetic energy?
A moving car.
Give an example of chemical energy transforming into another form
Food converting to mechanical energy when we move.
Name one way energy transfers through collisions
By direct impact (e.g., a car crash).
Can energy be created or destroyed?
No, it can only change forms.
What is kinetic energy?
Energy of motion.
Describe the difference between potential and kinetic energy
Potential energy is stored energy; kinetic energy is energy in motion.
Describe potential energy transforming into kinetic energy.
A ski jumper moving down a ramp.
Describe energy transfer through sound.
Sound energy travels through air as vibrations.
What is an example of chemical energy?
Food, body cells, batteries, or petroleum products.
What is electromagnetic radiation?
Waves that do not need a medium to travel through.
How does energy change in a bouncing ball?
It converts potential energy to kinetic energy and vice versa.
What happens when a lamp turns on?
Electrical energy transforms into light and thermal energy.
What happens when a wrecking ball hits a wall?
The ball's energy transfers to the wall, causing it to break.
Where is nuclear energy located?
In the nucleus or nuclei
Explain nuclear fission and fusion.
Fission the nucleus splits and releases energy. Fusion small nuclei combine to form a larger nuclei.
What are three examples of kinetic energy?
A flying bird, a rolling ball, a running person
Explain how mechanical energy is generated.
It is generated through the motion of objects or machines.
Explain how heat from the sun transfers energy.
Through radiation, warming the Earth.
Mechanical energy is the total energy an object has due to what?
motion (kinetic energy)
Position (potential energy)
Shape