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