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

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

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

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

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

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

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

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

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

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

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

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

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

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