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