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

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

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

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

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

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

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

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

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

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

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

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