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