Less dense material rises; and more dense material sinks; this is known as _________________________.

This is an example of a ________________________ volcano.

This is an example of a _________________________ volcano.

"Subduction" is a type of ___________________ boundary.

This is an example of a _____________________ boundary.

Sea Floor Spreading would be considered a type of ___________________ boundary.

A seismograph measures _________________________.

One of the clues that scientists used to discover which continents used to be connected to each other were _______________________.

Yucca Mountain is where the United States stores its ________________.

Which of our planet's layers is made up of primarily iron and nickel?

Which type of crust is more dense?

A seismograph is used for measuring the intensity of an earthquake and ________________________________.

The oldest time period listed below is the _________________.

Volcanoes surrounding the Pacific Ocean region are called the ______________________.

Who is the scientist associated with the theory of Continental Drift?

Bobby ordered a pizza. The pizza had 9 pieces to start with. Bobby was hungry and ate 7 of them. What percentage of the pizza did he eat?