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