7.10 Volcanic Landforms

What is Shiprock in New Mexico?

• The neck of an old volcano

• A shield volcano

• A lava plateau

• A lava dome

Answer explanation

Shiprock in New Mexico is the neck of an old volcano, not a shield volcano, lava plateau, or lava dome.

What type of rocks cool at the surface?

• Extrusive igneous rocks

• Intrusive igneous rocks

• Sedimentary rocks

• Metamorphic rocks

Answer explanation

Extrusive igneous rocks cool at the surface due to their rapid cooling process, forming fine-grained textures like basalt and rhyolite.

What are the most obvious landforms created by lava?

• Granite intrusions

• Lava plateaus

• Volcanoes

• Lava domes

Answer explanation

Volcanoes are the most obvious landforms created by lava due to the eruption and accumulation of molten rock on the Earth's surface.

What type of eruption created the entire ocean floor?

• Shield eruptions

• Cinder cone eruptions

• Composite eruptions

• Fissure eruptions

Answer explanation

Fissure eruptions created the entire ocean floor by releasing lava through long cracks in the Earth's crust, forming extensive basaltic layers.

What forms when thick lava makes it to the surface and cannot flow far from the vent?

• Cinder cone

• Shield volcano

• Lava dome

• Lava plateau

Answer explanation

When thick lava makes it to the surface and cannot flow far from the vent, it forms a lava dome.

What is the Columbia Plateau made of?

• Granite

• Limestone

• Sandstone

• Basalt

Answer explanation

The Columbia Plateau is made of Basalt, not Granite, Limestone, or Sandstone.

Tags

NGSS.MS-ESS1-4

How is new land created in Hawaii?

• By lava flowing into the ocean

• By tectonic uplift

• By sediment deposition

• By erosion

Answer explanation

New land is created in Hawaii by lava flowing into the ocean, which solidifies and forms new landmass over time.

Tags

NGSS.MS-ESS2-2

What type of magma usually forms intrusions?

• Intermediate magma

• Mafic magma

• Ultramafic magma

• Felsic magma

Answer explanation

Intrusions are usually formed by felsic magma, which is rich in silica and minerals like quartz and feldspar, making it viscous and capable of solidifying underground.

What are the Sierra Nevada Mountains primarily composed of?

• Limestone

• Sandstone

• Basalt

• Granite

Answer explanation

The Sierra Nevada Mountains are primarily composed of granite, making it the correct choice among the given options.

1. Why is it important that volcanic eruptions can form new land?

Tags

NGSS.MS-ESS2-2