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