Semester 1 Final Exam Study Guide Flashcards Preview

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Flashcards in Semester 1 Final Exam Study Guide Deck (52)
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1

How many mechanical layers of the earth are there?

6

2

The earth's magnetic field protects the earth from what?

Solar radiation

3

The "supercontinent" proposed by the continental drift theory was called what?

Pangea

4

This event often happens when a dense oceanic plate converges with a less dense continental plate.

Subduction

5

Which layer is earth's only liquid layer?

Outer core

6

When two tectonic plates are moving away from each other, the boundary is called what?

Divergent

7

Which layer of the earth generates the magnetic field?

Outer core

8

What natural phenomenon happens when the earth's magnetic field is overloaded by solar radiation?

Aurora Borealis (the Northern Lights)

9

What is the point IN the earth where an earthquake occurs called?

Focus

10

What is often times the result of a continental convergent boundary?

Mountain ranges

11

What are fractures in the earth called?

Faults

12

What type of fault runs almost vertically through the surface and causes the blocks of the surface to move horizontally to each other?

Strike-slip

13

What is the place ON THE SURFACE directly above where an earthquake occurs called?

Epicenter

14

This type of boundary occurs where two tectonic plates move horizontally to each other.

Transform

15

Why did Mars cool off and lose its magnetic field?

It's too small of a planet

16

Which layer of the earth is broken into the tectonic plates?

Lithosphere

17

Earthquakes release energy in the form of...

Waves

18

How are metamorphic rocks formed?

Heat and pressure under the earth's surface

19

How are igneous rocks formed?

Cooling of magma or lava

20

How are sedimentary rocks formed?

Weathering and erosion combined with pressure

21

The surface of sedimentary rocks often contains the remains of dead organisms called...

Fossils

22

When the surfaces of metamorphic rocks are FOLIATED, they have...

Ribbon-like layers

23

What is the difference between magma and lava?

Magma is molten rock BELOW the earth's surface, lava is molten rock ABOVE of the earth's surface

24

How is sedimentary rock turned into metamorphic rock?

Sedimentary rock is cemented and compacted by pressure, pushed down into the earth, and when heat is added to the pressure below the surface, it becomes a metamorphic rock

25

What mineral is a 10 on the Mors scale?

Diamond

26

Ionic bonds occur when one element does THIS with its electrons with another element

Gives up an electron

27

Covalent bonds occur where two elements do THIS with their electrons

Share electrons

28

What is precipitation?

When dissolved minerals come out of water

29

How are silicates formed?

When magma cools and crystallizes

30

Silicates are commonly used in what type of everyday product?

Technology