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3rd Grade 2009-2010
Rocks and MineralsReview
I enjoyed learning about rocks and minerals.
1 2
0%0%
1. True2. False
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Sedimentary rocks like limestone, have…
1 2 3 4
0% 0%0%0%
1. Visible layers 2. Small pieces of
other rocks3. May have fossils4. All of the above
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Soil and sand in a field blow away from strong winds. What could you do to slow down the erosion of the soil and sand?
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0% 0%0%0%
1. Add more dirt2. Plant grass in
the field3. Build a fence4. None of the
above
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There are four layers of soil.
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0%0%
1. True2. False
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This layer of soil contains larger rocks and pebbles but no decayed plant and animal matter.
1 2 3
33% 33%33%
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1. Solid rock2. Subsoil 3. Topsoil
This layer of soil contains small rocks, decayed plant and animal matter, and possibly living things.
1 2 3
0% 0%0%
1. Solid rock2. Subsoil 3. Topsoil
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This layer is below the subsoil.
1 2 3
33% 33%33%
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1. Solid rock2. Subsoil 3. Topsoil
Soil is mixture of tiny rock particles, ______, and decayed plant and animals material.
1 2 3
0% 0%0%
1. Water2. Dirt 3. Minerals
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Two reasons soil can be different in two places are…
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0% 0%0%0%
1. Types of animals and plants that live there
2. Temperature3. Amount of rainfall4. All of the above
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Weathering is the process that causes rocks to crumble, crack, and break.
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0%0%
1. True2. False
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Obsidian is a type of rock that forms when lava cools and hardens. Obsidian is what type of rock?
1 2 3
0% 0%0%
1. Sedimentary2. Metamorphic3. Igneous
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Pressure, heat, and chemicals cause marble and granite to form. These changed rocks are __________rocks.
1 2 3
0% 0%0%
1. Sedimentary2. Metamorphic3. Igneous
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There are six types of weathering. Which two are examples of weathering?
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0% 0% 0%0%0%
1. Water & soil 2. Temperature
changes & ice3. Chemicals &
sunlight4. Plant roots &
leaves5. Wind & rocks1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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Farmer Rich needs good topsoil to produce a great crop. Why would topsoil be the best choice?
1 2 3
0% 0%0%
1. It is a renewable resource.
2. It has large rocks so water flows right through it.
3. It retains water and has essential minerals.
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Erosion of soil happens when soil is left unprotected.
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0%0%
1. True2. False
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Soil is protected when there are no trees and land is left bare or empty.
1 2
0%0%
1. True2. False
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Who would want to reduce the amount of erosion that occurs?
1 2 3
0% 0%0%
1. A doctor2. A farmer3. A lawyer
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