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