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