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Daily Warm-Up Exercises 1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of the grains is different. Silt has much finer grains than sand, and clay’s are very, very fine.

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Page 1: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Daily Warm-Up Exercises 1

Day 3

What’s the same and different about sand, silt, and clay?

They are all made up of a lot of small grains, but the size of the grains is different. Silt has much finer grains than sand, and clay’s are very, very fine.

Page 2: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 2

Compare Rock Types

Contrasting Case Activity 1, Part 3Earth History, Investigation 8

Page 3: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 3

Conclusions about Igneous RocksWhat features are shared by both igneous rocks?

Formed on Earth’s surface from molten rock released by a volcano

Grain size is fine to medium

Contains a lot of small air pockets

Usually feels lighter than other rocks of its size

Granite OnlyPumice OnlyBoth Granite &

Pumice

Made of minerals

Formed when molten rock cools and hardens

Rough and dull

Formed deep beneath Earth’s surface

Most grains are coarse

Usually fairly light in color

It is hard and has shiny, smooth crystals

Made of volcanic glass

Page 4: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 4

Conclusions about Metamorphic RocksWhat features are shared by both metamorphic rocks?

Schist OnlyQuartzite OnlyBoth Schist & Quartzite

Made of minerals

Formed when a rock changes due to heat and/or pressure

Rough

Formed deep beneath Earth’s surface

Fairly shiny

Medium to coarse grain size

Crystals are flat and arranged in layers

Formed from slate, a metamorphic rock

Dull, and hard

Fine grain size

Formed from sandstone, a sedimentary rock

Grains appear to be fused together

Page 5: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 5

Conclusions about Sedimentary RocksWhat features are shared by both sedimentary rocks?

Shale OnlySandstone OnlyBoth Shale & Sandstone

Made of minerals

Formed when something gets compacted and cemented together

Dull and hard

May form on or below Earth’s surface

Smooth

Very fine grain size

Grains are arranged in layers

Formed from particles of silt or clay

Rough

Medium to coarse grain size

Formed from grains of sand

May contain fossils

Page 6: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 6

Compare Rock TypesLook at the center sections of all three diagrams. Is there anything that all three rock types have in common?

no

Is there anything that two of the three rock types have in common?

Metamorphic and sedimentary rocks are both made of minerals.

Page 7: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 7

Compare Rock TypesLook at the igneous diagram. Is either of these rocks made of minerals?

granite is; pumice is not

Look at the last Venn diagram. This one has three circles, one for each rock type. How would you show that most rocks are made of minerals?

What can we conclude from this?Most rocks are made of minerals.

Page 8: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types8

Rock Types

Most rocks are made

ofminerals

Igneous

Metamorphic Sedimentary

Page 9: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 9

Compare Rock Types

Is there anything else that is true about two rock types but not true about the third?

Igneous and sedimentary rocks may form on or below Earth’s surface.

Metamorphic rocks only form below the surface.

How would you show this in the diagram?

Page 10: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 10

Rock Types

May form on or below Earth’s surface

Only form below Earth’s surface

Most rocks are made

ofminerals

Igneous

Metamorphic Sedimentary

Page 11: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 11

Compare Rock Types

Fill in the diagram by entering at least one feature that is true about igneous rocks only.

Do the same for metamorphic and sedimentary rocks.

Page 12: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types12

Rock Types

Form when something gets compacted &

cemented together

May contain fossilsForm when a rock

changes due to heat and/or pressure

Form when molten rock cools & hardens

May form on or below Earth’s surface

Only form below Earth’s

surface

Most rocks are made

ofminerals

Igneous

Metamorphic Sedimentary

Page 13: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 13

Concluding DiscussionBased on your diagram, what do most rocks have in common?

They are made of minerals.

Suppose a previously unknown rock is discovered, and scientists categorize it as sedimentary. What can you say about this rock?

It probably formed when something got compacted and cemented together. It could have formed on or below Earth’s surface. It may contain fossils.

Page 14: Daily Warm-Up Exercises1 Day 3 What’s the same and different about sand, silt, and clay? They are all made up of a lot of small grains, but the size of

Compare Rock Types 14

Concluding DiscussionSuppose they categorize the unknown rock as metamorphic. What can you say about it then?

It probably formed deep beneath Earth’s surface, when a rock changed because of heat and/or pressure.

What if they categorize it as igneous? What can you say about it then?

It probably formed when molten rock cooled and hardened. It could have formed on or below Earth’s surface.


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