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