Igneous Rocks Quiz

What is the difference between intrusive and extrusive igneous rocks?

• Intrusive rocks form when magma cools beneath Earth's surface, while extrusive rocks form when lava cools on Earth's surface.

• Intrusive rocks form when lava cools on Earth's surface, while extrusive rocks form when magma cools beneath Earth's surface.

• Intrusive rocks form when magma cools on Earth's surface, while extrusive rocks form when lava cools beneath Earth's surface.

• Intrusive rocks form when lava cools beneath Earth's surface, while extrusive rocks form when magma cools on Earth's surface.

Tags

NGSS.MS-PS1-4

How do coarse-grained igneous rocks form?

• They form when magma cools slowly within Earth, resulting in large mineral grains.

• They form when lava cools quickly on Earth's surface, resulting in small mineral grains.

• They form when magma cools quickly within Earth, resulting in small mineral grains.

• They form when lava cools slowly on Earth's surface, resulting in large mineral grains.

How are igneous rocks classified according to composition?

• They are classified based on their texture and arrangement of crystals.

• They are classified based on their color and density.

• They are classified based on their chemical composition and mineral content.

• They are classified based on their location and formation process.

How do fine-grained igneous rocks form?

• They form when magma cools slowly within Earth, resulting in large mineral grains.

• They form when lava cools quickly on Earth's surface, resulting in small mineral grains.

• They form when magma cools quickly within Earth, resulting in small mineral grains.

• They form when lava cools slowly on Earth's surface, resulting in large mineral grains.

Tags

NGSS.MS-PS1-4

How do igneous rocks with glassy textures form?

• They form when magma cools slowly within Earth, resulting in large mineral grains.

• They form when lava cools quickly on Earth's surface, resulting in small mineral grains.

• They form when magma cools quickly within Earth, resulting in small mineral grains.

• They form when lava cools very quickly, preventing the formation of crystals.

Tags

NGSS.MS-PS1-4

Which composition of igneous rocks contains the minerals quartz and feldspar?

• Granitic composition

• Basaltic composition

• Andesitic composition

• Ultramafic composition

Which composition of igneous rocks contains many dark silicate minerals and plagioclase feldspar?

• Granitic composition

• Basaltic composition

• Andesitic composition

• Ultramafic composition

Which composition of igneous rocks contains at least 25 percent dark silicate minerals and mainly amphibole, pyroxene, and biotite mica?

• Granitic composition

• Basaltic composition

• Andesitic composition

• Ultramafic composition

Which composition of igneous rocks contains mostly the minerals olivine and pyroxene?

• Granitic composition

• Basaltic composition

• Andesitic composition

• Ultramafic composition

How do the cooling rates of magma or lava affect the texture of igneous rocks?

• Slow cooling results in coarse-grained texture, while rapid cooling results in fine-grained texture.

• Slow cooling results in fine-grained texture, while rapid cooling results in coarse-grained texture.

• Slow cooling results in glassy texture, while rapid cooling results in porphyritic texture.

• Slow cooling results in porphyritic texture, while rapid cooling results in glassy texture.

Tags

NGSS.MS-PS1-4