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

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

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

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

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

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

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

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

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

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

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

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