Rocks and Minerals by UTH Rocks and Minerals by UTH    

Lesson 20: Magma

Directions

Study the lesson for one week.

Over the week:

• Read the lesson.
• Review the synopsis.
• Recite aloud the vocabulary words and their definitions.
• Study the rock and mineral of the week.
• Complete the enrichment activities.
• Study the review questions.

Synopsis

Magma, the underground source of the lava that erupts from volcanos, forms when the rocks from the Earth's mantle melt. Magma cools to form intrusive igneous rocks under the surface of the Earth.

Vocabulary

Magma: The molten matter within the Earth, the source of the material of lava flows, dikes of eruptive rocks, etc.
Mantle: The layer between the Earth's core and crust.
Core: The heart or inner part of a physical thing, such as the Earth.
Crust: The outermost layer of the lithosphere of the Earth.
Lithosphere: The rigid, mechanically strong, outer layer of the Earth; divided into twelve major plates.

Rock or Mineral of the Week

Overview

• Granite forms from magma under the Earth's surface.
• Granite is a group of igneous rocks composed primarily of feldspar and quartz.

Locations:

• All over the Earth. Much of the Earth's crust is made from granite.

Interesting Facts

• Granite is quarried for building stone, road gravel, decorative stone, countertops, and tombstones.
• See the gleaming black and white granite kitchen countertop.

Enrichment

Activity 1: Narrate the Lesson

• After reading or listening to the lesson, narrate the lesson aloud using your own words.

Activity 2: Take a Nature Walk

• Embark on a nature walk.
• Collect one rock or mineral specimen.
• Use the gathered specimen to create the field book entry.

Activity 3: Complete a Field Book Entry   

After your nature walk, complete page 6 in 'Fifth Grade Science Rocks and Minerals Notebook Pages.'

Review

Question 1

What are the three major groups of rock that make up the crust of the Earth?

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Answer 1

The three major groups of rock that make up the crust of the Earth are igneous, metamorphic, and sedimentary.

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Question 2

Which rock group is formed from cooling magma or lava?

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Answer 2

The igneous rock group is formed from cooling magma or lava.

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Question 3

Which rock group includes rocks or minerals transformed by heat and pressure?

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Answer 3

The metamorphic rock group includes rocks or minerals transformed by heat and pressure.

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Question 4

Which rock group is made up of deposits cemented together?

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Answer 4

The sedimentary rock group is made up of deposits cemented together.

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Question 5

Is granite an igneous, metamorphic, or sedimentary rock?

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Answer 5

Granite is an igneous rock.

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Question 6

Describe something about granite.

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Answer 6

Granite an igneous rock that is very abundant in the Earth's crust. Granite is an attractive rock used for building and kitchen countertops.

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❮ ❯

1. What are the three major groups of rock that make up the crust of the Earth? The three major groups of rock that make up the crust of the Earth are igneous, metamorphic, and sedimentary.
2. Which rock group is formed from cooling magma or lava? The igneous rock group is formed from cooling magma or lava.
3. Which rock group includes rocks or minerals transformed by heat and pressure? The metamorphic rock group includes rocks or minerals transformed by heat and pressure.
4. Which rock group is made up of deposits cemented together? The sedimentary rock group is made up of deposits cemented together.
5. Is granite an igneous, metamorphic, or sedimentary rock? Granite is an igneous rock.
6. Describe something about granite. Granite an igneous rock that is very abundant in the Earth's crust. Granite is an attractive rock used for building and kitchen countertops.

References

'Granite.' Wikipedia. en.wikipedia.org/wiki/Granite. n.p.

Cited Physical Properties. Geology.com. geology.com/rocks. n.p.