When metamorphic rocks are formed, the extreme pressure is usually caused by the _______.

the fiery hot magma in the Earth's mantle

What are the two main types of metamorphic rocks and how are they different?

foliated and nonfoliated; foliated rocks have visible bands/layers and nonfoliated rocks do not have visible bands/layers

intrusive and extrusive; intrusive rocks are formed inside the earth and extrusive rocks are formed on the surface

foliated and nonfoliated; foliated rocks do not have visible bands/layers and nonfoliated rocks do have visible bands/layers

intrusive and extrusive; intrusive rocks are formed on the earth's surface and extrusive rocks are formed in the Earth

This is a rock named gneiss (pronounced "nice.") Which of the statements below are true? Choose all correct answers.

this is a foliated metamorphic rock

the minerals in this rock were flattened by extreme heat and pressure

this is a clastic sedimentary rock

this is an igneous rock that cooled quickly on Earth's surface

Why are the mineral layers of the Earth density stratified (layered due to density)?

Heavier elements of iron and nickel went to the center/lighter oxygen and silicon went to surface.

Heavier elements like iron and nickels settled to the surface and lighter material sunk down.

There are no actual layers of Earth that are density stratified.

iron and nickel are not magnetic like oxygen and silicon, therefore are not affected by the magnetic field.

Both Graphite and Diamonds are made of the same thing (Carbon), but why can diamond dust be used to coat blades/tools and graphite is used for pencils?

Composition (what it is made of)

Diamonds and Graphite are both made of carbon. Why is graphite softer so it can be used for pencils?

The structure of the atoms are arranged in sheets in graphite, therefore are a weaker structure.

mineral and soil deposits from above put pressure on the graphite making it softer.

The only difference difference is the color and lack of exposure to heat for diamonds.

Diamonds are made from evaporation and graphite is made from cooling and hardening.

Look at the mineral compositions of each mineral. What can we conclude about these minerals? (look at the two most common elements)

All of these are Silicates, therefore silicates is the most abundant group

All of these are Carbonates and carbonates are the most abundant group

Iron is the most common element found at the surface

Calcium is the most common element at the surface

An ore is a mineral that can be:

crushed and sprinkled onto food

Minerals with good cleavage like mica or calcite, break....

along weak bonds giving them a certain shape or pattern

break randomly depending where they are hit on the surface

wherever the highest temperature is within a mineral

where there is the most pressure from other mineral deposits on top of it.

True characteristics of sedimentary rocks...

made or organic or rock fragment material and contain fossils

always contain bands of dark and light colored minerals

smooth and made of just one type of mineral

always irregular shaped and pressurized

UNIT 3-Rocks and Minerals Test Review

Authored by Heather Roldanmoore

Other Sciences

9th - 12th Grade

Used 14+ times

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

This rock formed when bits of other rocks (sand) became pressed into a solid (sandstone). What type of rock is it?

Sedimentary Rock

Metamorphic Rock

Igneous Rock

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This rock was formed when magma cooled very slowly inside the Earth allowing to form larger crystals. What specific type of rock is it?

Intrusive Igneous Rock

Extrusive Igneous Rock

Foliated Metamorphic Rock

Clastic Sedimentary Rock

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This rock formed when lava cooled very quickly on Earth's surface. What specific type of rock is it?

Extrusive Igneous Rock

Intrusive Igneous Rock

Non-Foliated Metamorphic Rock

Biochemical Sedimentary Rock

MULTIPLE CHOICE QUESTION

1 min • 1 pt

When you watch a volcano erupt molten rock, you are seeing _____

Lava

Magma

Mineral Crystals

Igneous Rocks

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two ways to describe types of igneous rocks are _____

Extrusive and Intrusive

Foliated and Non-Foliated

Clastic and Biochemical

Black and Gray

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What process is used to form sedimentary rocks?

Lava cools and hardens to form a rock.

Weathering, Erosion, Deposition, Compaction, Cementation

Extreme heat and pressure from inside the Earth turn rocks into new rocks.

Magma trapped under the Earth's surface cools and solidifies.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the words below describe broken up rock?

stalactites

magmas

metamorphs

sediments

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UNIT 3-Rocks and Minerals Test Review

This rock formed when bits of other rocks (sand) became pressed into a solid (sandstone). What type of rock is it?

This rock was formed when magma cooled very slowly inside the Earth allowing to form larger crystals. What specific type of rock is it?

This rock formed when lava cooled very quickly on Earth's surface. What specific type of rock is it?

When you watch a volcano erupt molten rock, you are seeing _____

Two ways to describe types of igneous rocks are _____

What process is used to form sedimentary rocks?

Which of the words below describe broken up rock?

This rock was formed by smaller pieces of rock that settled at the bottom of a lake millions of years ago. What type of rock is this?

This rock was found near the mouth of a volcano. What type of rock is this?

Which type of rock is formed from INTENSE heat and pressure?

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