The speed of a glacier is typically fastest in the center and at the bottom.

The process during plate collisions that leads to the formation of volcanic island arcs is

Salt water makes up about 70% of the water on Earth.

Molecules have covalent bonds where electrons are

As the core of the Earth is approached, the density of earth material

The Hawaiian islands are formed at a

Atoms having the same atomic number, but different mass numbers are called _____. They can be used to determine the age of rocks.

The scale used to measure earthquakes is called the

The continuous circulation of water on the Earth is called the hydrologic cycle.

The mechanism causing the crustal plates to move is thought to be