Chapter 9 Lesson 2: Volcanoes

1. A fast-moving cloud of hot gas, ash, and rock from an erupting volcano is a(n)

• A. ash fall.

• B. mudflow.

• C. pyroclastic flow.

Tags

NGSS.MS-ESS3-2

2. Volcanoes form along convergent boundaries as a result of

• A. seafloor spreading.

• B. hot spots in the mantle.

• C. subduction and rising magma.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS2-1

3. Eruption style depends on the magma’s viscosity and the

• A. volume of ash in the magma.

• B. size of the volcano that erupts.

• C. amount of dissolved gases in the magma.

4. A large volcano with gentle slopes is a

• A. shield volcano.

• B. composite volcano.

• C. cinder cone volcano.

5. The Ring of Fire is a group of Hawaiian shield volcanoes.

• True

• False

Tags

NGSS.MS-ESS2-3

6. Composite volcanoes often form at convergent plate boundaries.

• True

• False

Tags

NGSS.MS-ESS2-3

7. Viscosity is a liquid’s resistance to flow.

• True

• False

8. A caldera is a large volcano that forms at a divergent plate boundary.

• True

• False

9. A cinder cone is a small volcano with steep sides.

• True

• False

10. Volcanoes that are not associated with plate boundaries are called hot spots.

• True

• False

Tags

NGSS.HS-ESS2-3