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