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