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