A) An automobile that operates on fuel cells B) A gasoline burning automobile C) A wood burning stove D) A coal burning generator
A) Heat from within the Earth's crust B) The sun C) The moon D) Running water
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) Atmosphere C) Rotation D) Temperature
A) The sun protects life on Earth B) The sun damages 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 tilt of the Earth on it's axis C) The Earth's changing distance from the sun D) Changes in the sun's intensity
A) Because it reflects sunlight B) It reflects light from stars C) It reflects light from Earth D) It makes it's own light
A) Deep craters B) Sunken plains, or seas C) Mountains D) High plateaus
A) Heat B) Light C) Motion D) Electricity
A) Lift and thrust B) Temperature and pressure C) Motion and time D) Wind and rain |