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

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

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

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

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

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

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

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

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

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

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

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

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

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