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

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

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

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

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

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

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

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

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

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

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

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

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

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