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

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

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

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) nuclear energy
C) solar energy
D) magnetic energy

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

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

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

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

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

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