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