A) An automobile that operates on fuel cells B) A gasoline burning automobile C) A coal burning generator D) A wood burning stove
A) Running water B) Heat from within the Earth's crust C) The moon D) The sun
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) Magnetic Field B) Atmosphere C) Temperature D) Rotation
A) The sun causes plants to wither and die B) The sun protects life on Earth C) The sun damages life on Earth D) The sun powers 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) It reflects light from stars B) Because it reflects sunlight C) It makes it's own light D) It reflects light from Earth
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 |