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