from energy transformations video

What is energy?

• the ability to do work

• the stuff in a light bulb

• the amount of matter in an object

• the speed of an object

What are some forms of energy?

• Light

• Sound

• Mechanical

• Electrical

• Chemical

So, how IS a hamburger a form of energy?

• The cow used to move around, so it is kinetic energy.

• You have to cook it to eat it, so it is thermal (heat) energy

• It is stored chemical energy.

An energy transformation is a change from one form of energy to another.

• true

• false

Energy can't be created nor destroyed. It can only change from one form into another.

• true

• false

What form of energy is stored in battery?

• food

• light

• electrical

• chemical

The light, kinetic and sound energy of a car starts out as

• kinetic energy in the gas

• light energy in the battery

• chemical energy in the battery (and in the gas)

• thermal energy in the battery

One energy transformation in a radio is (in the example from video)

• chemical to thermal

• electrical to sound

• sound to electrical

• electrical to thermal