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