Exploring the Rock Cycle and Types of Rocks

The video tutorial explains the different types of rocks found on Earth: igneous, sedimentary, and metamorphic. Igneous rocks form from cooled magma or lava, with examples like granite and obsidian. Sedimentary rocks form from accumulated sediment, often preserving fossils, with examples like limestone and shale. Metamorphic rocks result from existing rocks transformed by heat and pressure, with examples like slate and marble.

What are the three main types of rocks?

• Sedimentary, Metamorphic, Fossil

• Igneous, Sedimentary, Fossil

• Igneous, Metamorphic, Fossil

• Igneous, Sedimentary, Metamorphic

Tags

NGSS.MS-ESS1-4

What does the word 'igneous' mean?

• Watery

• Earthy

• Windy

• Fiery

Which type of igneous rock is formed when magma cools slowly beneath the Earth's surface?

• Obsidian

• Pumice

• Granite

• Tuff

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NGSS.MS-PS1-4

What percentage of the Earth's crust is made up of igneous rocks?

• 100%

• 95%

• 75%

• 50%

What is sediment?

• Small particles of sand, mud, and organic material

• Molten lava

• Solidified magma

• Large rocks

Where are sedimentary rocks often formed?

• Deep underground

• Near volcanoes

• In lakes or oceans

• On mountain tops

Tags

NGSS.MS-ESS2-4

Which type of rock is most likely to contain fossils?

• Igneous

• Sedimentary

• Metamorphic

• Volcanic

Tags

NGSS.MS-LS4-1

What does the word 'metamorph' mean?

• To change form

• To form

• To break

• To melt

How can metamorphic rocks be formed?

• By extreme heat and pressure

• By accumulation of sediment

• By volcanic eruptions

• By cooling of lava

What does limestone become when it undergoes metamorphism?

• Marble

• Slate

• Quartzite

• Granite