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