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