A) conserve energy
B) do work
C) fly
D) eat

A) sound
B) inertia
C) light
D) heat

A) a fire
B) the sun
C) the moon
D) a factory

A) stars and planets
B) water and oxygen
C) life on Earth
D) rocks and dirt

A) energy
B) an engine
C) wings
D) wheels

A) magnetic energy
B) sound energy
C) solar energy
D) nuclear energy

A) food
B) water
C) leaves
D) soil

A) energy in food
B) heat from an oven
C) a magnet
D) the sun

A) a radio
B) the sun
C) a magnet
D) a fire

A) the poles of the Earth
B) power plants
C) distant plantes
D) dead plants and animals

A) the energy of motion
B) the ability to do work
C) energy stored in an object
D) energy fromthe sun

A) the energy of motion
B) the ability to do work
C) energy from the sun
D) energy stored in an object

A) the ability to do work
B) energy stored in an object
C) energy from the sun
D) the energy of motion

A) heat energy
B) energy stored in an object
C) energy fromt he sun
D) the energy of motion