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 sun B) The moon C) Running water D) Heat from within the Earth's crust
A) The speed of the wind B) The state of the atmosphere at any particular time C) The amount of moisture in the air D) The number of clouds in the sky
A) Rotation B) Temperature C) Atmosphere D) Magnetic Field
A) The sun causes plants to wither and die B) The sun powers life on Earth C) The sun protects life on Earth D) The sun damages life on Earth
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 makes it's own light D) It reflects light from stars
A) High plateaus B) Sunken plains, or seas C) Deep craters D) Mountains
A) Light B) Motion C) Electricity D) Heat
A) Lift and thrust B) Wind and rain C) Temperature and pressure D) Motion and time |