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

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

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

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

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

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

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

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

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

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

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

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

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

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