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

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

A) the sun
B) a fire
C) the moon
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) nuclear energy
B) magnetic energy
C) sound energy
D) solar energy

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

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

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

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

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

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

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

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