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

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

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

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

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

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

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

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

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

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

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

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

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

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