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