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