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