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