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Flashcards in SCIENCE Deck (38):
1

Earth

only planet that can sustain life
4.5 billion

2

Layers of the Earth

Crust
Mantle
Core

3

Parts of the Earth

Lithosphere
Hydrosphere
Atmosphere
Biosphere

4

Lithosphere

29.2%
land

5

Hydrosphere

70.8%
salt 97%
fresh 3%

6

Atmosphere

air

7

Biosphere

living

8

Volcano

an opening in the earth's crust through which molten rocks erupt

9

Active Volcano

recorded history
signs of unrest
10,000 years
1500 active in the world

10

Date

scientists are dating rocks

11

Pacific Ring of Fire

40,000 km
a zone of high volcanic activity

12

Volcanoes form

subduction zones
hotspots
plates are pulling aapart

13

Oceanic ridges

chain of volcanoes at the seafloor

14

Warning signs by scientist

earthquakes
changes in the tilt of the ground
changes in temperature
volcanic gases change

15

Explosive

Water vapor
trapped gases
BASALTIC LAVA

16

Most Active Volcano

Mount Vesuvius
Sakurajima
Merapi
Nyiragongo
Ulawun
Taal
Mauna Loa

17

Earthquake

forms of wave energy that are transmitted through bedrock.

18

Movement of the tectonic plates

pressure builds up

19

Hypocenter

FOCUS
underground focus point origin

20

Epicenter

on the earth's surface

21

Seismic waves

elastic wave in the earth produced by an earthquake

22

surface waves

move along the surface of the planet

23

body waves

can travel through the earth's inner layer

24

primary wave

solid and liquid
same

25

secondary wave

solid only
opposite

26

Shallow focus earthquake

0-70 km deep
larger and more damage

27

Deep focus earthquake

70-700 km deep

28

Fault

a crack across

29

Fault plane

first part where the fault occurs

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Fault trace

where it is
mark

31

Hanging wall

block positioned over the fault

32

Foot wall

block positioned under the fault

33

Normal Fault

foot wall sa taas

34

Reverse fault

hanging wall sa taas

35

Tectonic Earthquake

most common
Happens when the shifting of the earth's plates

36

Volcanic Earthquake

often occurs in volcanic region

37

Collapse earthquake

small earthquake located underground/mines

38

Explosion earthquake

results from chemicals/ nuclear devices