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

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

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

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

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

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

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

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

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

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

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

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

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

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