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