Igneous Rocks and Sedimentary Rocks

Aiden, Abigail, and Zoe are studying geology and come across the term 'igneous'. What does it mean in the context of rock formation?

• Formed from the cooling and solidification of molten rock

• Formed from the erosion of sedimentary rocks

• Formed from the compression of metamorphic rocks

• Formed from the deposition of organic matter

Mia, Maya, and Ethan are studying geology and come across the topic of igneous rocks. They learn that there are two broad types of igneous rocks. What are these two types?

• Sedimentary and metamorphic rocks

• Intrusive and extrusive rocks

• Igneous and metamorphic rocks

• Granite and basalt rocks

During a geology field trip, Ava, Aria, and Harper were discussing the differences between intrusive and extrusive igneous rocks. How do intrusive igneous rocks differ from extrusive igneous rocks?

• Intrusive rocks cool slowly and have large crystal sizes, while extrusive rocks cool quickly and have small crystal sizes

• Intrusive rocks cool quickly and have small crystal sizes, while extrusive rocks cool slowly and have large crystal sizes

• Intrusive rocks are formed from magma, while extrusive rocks are formed from lava

• Intrusive rocks are found on the surface, while extrusive rocks are found within the Earth

During a field trip to a volcano, Grace, Maya, and Aiden observed some rocks that were formed as shattered bits of rock during explosive eruptions. What is the term for these volcanic rocks?

• Pyroclastic rocks

• Granitic rocks

• Basaltic rocks

• Andesitic rocks

Benjamin, Evelyn, and Abigail are studying geology and come across a sample of igneous rock. Which elements are most commonly found in this type of rock?

• Oxygen, Silicon, Aluminum

• Iron, Calcium, Sodium

• Magnesium, Potassium, Sodium

Tags

NGSS.MS-PS1-1

Noah, Nora, and Sophia are studying geology and come across a type of igneous rock that is high in magnesium and iron. Which type of rock are they looking at?

• Mafic

• Intermediate

• Silicic

• Ultramafic

Oliver, Luna, and Liam are studying geology and come across a granite rock. They want to identify the major minerals found in granite. What are the major minerals present in granite?

• Quartz and alkali-feldspar

• Plagioclase feldspar and amphibole

• Pyroxene, olivine, and plagioclase feldspar

• Olivine, pyroxene, and magnetite

During a geology field trip, Nora, Daniel, and Michael are examining a volcanic rock. They want to determine the melting temperature and viscosity of the rock. What factor should they consider?

• Composition

• Texture

• Structure

• Color

Tags

NGSS.HS-PS1-4

Avery, Mia, and Arjun are studying geology and come across a type of volcanic rock that contains no crystals and is often referred to as volcanic glass. What is the name of this rock?

• Obsidian

• Basalt

• Rhyolite

• Trachybasalt

Sophia, Rohan, and Elijah are studying geology and come across a rock sample. They want to determine if it is a mafic rock. What characteristics should they look for in the rock sample?

• High melting temperatures and low viscosity

• Contain minerals high in magnesium and/or iron

• Most common minerals are feldspars and quartz

• Light in color