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