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