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