Most of Earth's earthquakes, volcanoes, and mountain building occur a. in the center of continents. b . in the Himalayas. c. at plate boundaries. d. at volcanic island arcs.

Alfred Wegener is best known for what hypothesis? a. plate tectonics c. continental drift b. seafloor spreading d. subduction

Which of the following mountain ranges was NOT the result of continental-continental convergence? a. Himalayas b. Alps c. Appalachians d. Andes

Few earthquakes occur in the middle of continents because ______.

A salesperson has just started a new job selling "Earthquake-Proof," a seismic damper technology, to construction companies. Where is she likely to make the most sales? a. In the Midwest because it is located in the middle of a plate, b. In the Northeast because many large cities are located there, c. On the West Coast because it is located along plate boundaries, d. On the East Coast because it is located along the boundary between the ocean and continent.

What can scientists calculate from the P-waves and S-waves interval? a. The cause of the earthquake, b. How strong the earthquake was, c. The distance to the earthquake epicenter, d. The effects of the earthquake on structures.

Describe two different ways that sedimentary rock can become igneous rock.

What is the name of the supercontinent proposed by Alfred Wegener, which comprised all of the continents?
a. Laurasia
b. Gondwanaland
c. Pangea
d. Tethys
e. Pengarlia

What is the name given by Wegener to the supercontinent he proposed existed before the current continents? a. Euroamerica b. Atlantis c. Pangaea d. Panamerica

Briefly explain the theory of plate tectonics.

The point at which an earthquake begins is called a. a foreshock. b. the epicenter. c. the focus. d. the Moho.

What is the weaker, hotter zone beneath the lithosphere that allows for motion of Earth's rigid outer shell? a. crust b. asthenosphere c. outer core d. inner core

What material do scientists believe makes up a large part of the upper mantle? a. basalt b. granite c. iron d. peridotite

Explain how a convection cycle is generated.