What does Earth do to cause night and day?

What season is between winter and summer?

What instrument do you use to measure wind speed?

What is the wearing away of parts of the Earth by water or wind called?

What type of scientist studies microscopic plants and animals?

The average rain drop falls at a rate of how many feet per second?

What is the name of the submerged fringe of a continent?

What is a sudden collapse and downward motion of ice and rocks down a mountainside?

What ongoing process allows water to be constantly recycled?

When a meander is cut off, what is formed?

78% of the earth's atmosphere is composed of which gas?

What is a person called who specializes in the physical structure and process of the earth?

What happens to the pressure of water as depth under the water increases?

What is the hardest mineral known on Earth called?

What does the Saffir-Simpson scale measure?

What is the study of plant life called?

What is the imaginary line that runs from the North to the South Pole called?

What is the height of the sea's surface generally called?

What is the formal name for climate studies?

What is molten rock beneath the surface of the earth called?

What is the science of the origin, history, and structure of the Earth called?

A very fast white water cascade is also known as what?

What is a plant with no internal system of tube like structures called?

Approximately what fraction of the Earth's air is made up of oxygen?

What word means "the shakes that come after the earthquakes"?