3rd Grade Science Day 5

Quarter 2 Review Name __________________________

Review Information Rocks can be classified by properties, such as how they are formed, color, visible crystals or minerals, grain pieces, patterns in the rock such as layers or stripes. Igneous Rocks

• Igneous rock was once melted, but it has cooled and hardened. • The melted material is called magma or lava. • Some igneous rocks may be glassy or grainy with crystals of different types of

minerals in them, such as granite. • Some igneous rocks may be a uniform color with few visible crystal grains, such as

basalt. Some igneous rocks have holes in them from gas bubbles that were trapped when lava cooled, such as scoria or pumice.

• Igneous rocks typically do not have layers. Sedimentary Rocks

• Sedimentary rocks are usually made up of pieces of rock that have been pressed and cemented together,

• Sediments are pieces of older rocks that have been broken down by the process of weathering.

• Sedimentary rocks can be recognized by being made of sediments of various sizes, including pebbles, sand grains, silt, and clay/mud.

• Sandstone and limestone are examples of sedimentary rocks. • With few very rare exceptions, sedimentary rocks are the only rocks that may

contain fossils. • Fossils may be shells, bones, or other remains of plants or animals.

Metamorphic Rocks

• Metamorphic rock was once another type of rock deep inside Earth, but heat and pressure caused the minerals to change and form a new type of rock.

• Sedimentary rocks, igneous rocks, and even other metamorphic rocks can be changed into metamorphic rocks.

• Marble and slate are examples of metamorphic rocks. • Metamorphic rocks that were created by pressure will have minerals line up in

layers. Some have bands or stripes of alternating light and dark minerals colors. • Sometimes the heat just changes the size of the mineral crystals. • Metamorphic rocks that form mainly from heat do not always have layers or

bands.

Heated and MeltedHeated

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Heat & PressureNo Melting

Heat & PressureNo Melting

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(C) Copyright 2008, Ramon Quevedo, All Rights Reserved.SEDIMENT

Heated and Melted

Name:______________________ Date:______________________

Kinds of Rocks Quiz Directions: Write the word in the blank to tell what type of rock goes with each clue. 1. __________________ This rock is formed from melted rocks. 2. __________________ This rock is formed in layers. 3. __________________ Fossils are often found in this rock. 4. __________________ This rock is changed by heat and pressure. 5. __________________ This rock was formed from pressure from the water in a lake or ocean pushing down on it. 6. __________________ This rock may be formed from magma that hardens. 7. __________________ This rock is often found near water. 8. __________________ This rock may be formed from lava. 9. __________________ Fossils are often found in this rock. 10. _________________ You would most likely find this rock near a volcano. Bonus Questions What kind of rock? 1. Granite____________________ 2. Marble _________________ 3. Limestone_________________ 4. Basalt __________________

Sedimentary Igneous Metamorphic

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Name: _____________________

1. Tell how each type of rock is formed.

Sedimentary - ______________________________________________________________

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Igneous - ___________________________________________________________________

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Metamorphic - ______________________________________________________________

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2. What are some characteristics of each type of rock?

Sedimentary - ______________________________________________________________

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Igneous - ___________________________________________________________________

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Metamorphic - ______________________________________________________________

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3. Use the rock cycle to answer the following questions.

How does an igneous rock become sedimentary? ____________________________

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How does an igneous rock become metamorphic?___________________________

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How does a metamorphic rock become sedimentary? _______________________

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How does a metamorphic rock become igneous? ____________________________

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How does a sedimentary rock become metamorphic?________________________

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How does a sedimentary rock become igneous? ____________________________

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