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