A) A gasoline burning automobile B) An automobile that operates on fuel cells C) A coal burning generator D) A wood burning stove
A) The moon B) The sun C) Running water D) Heat from within the Earth's crust
A) The amount of moisture in the air B) The state of the atmosphere at any particular time C) The number of clouds in the sky D) The speed of the wind
A) Magnetic Field B) Temperature C) Rotation D) Atmosphere
A) The sun damages life on Earth B) The sun powers life on Earth C) The sun protects life on Earth D) The sun causes plants to wither and die
A) The Earth's rotation B) The Earth's changing distance from the sun C) The tilt of the Earth on it's axis D) Changes in the sun's intensity
A) Because it reflects sunlight B) It reflects light from Earth C) It makes it's own light D) It reflects light from stars
A) Mountains B) Deep craters C) High plateaus D) Sunken plains, or seas
A) Heat B) Motion C) Electricity D) Light
A) Temperature and pressure B) Lift and thrust C) Wind and rain D) Motion and time |