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