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