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