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

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

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

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

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

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

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

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

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

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

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

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

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

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