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FIRST QUARTER > SCIENCE > Flashcards

SCIENCE Flashcards

1
Q

Earth

A

only planet that can sustain life

4.5 billion

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2
Q

Layers of the Earth

A

Crust
Mantle
Core

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3
Q

Parts of the Earth

A

Lithosphere
Hydrosphere
Atmosphere
Biosphere

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4
Q

Lithosphere

A

29.2%

land

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5
Q

Hydrosphere

A

70.8%
salt 97%
fresh 3%

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6
Q

Atmosphere

A

air

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7
Q

Biosphere

A

living

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8
Q

Volcano

A

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

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9
Q

Active Volcano

A

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

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10
Q

Date

A

scientists are dating rocks

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11
Q

Pacific Ring of Fire

A

40,000 km

a zone of high volcanic activity

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12
Q

Volcanoes form

A

subduction zones
hotspots
plates are pulling aapart

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13
Q

Oceanic ridges

A

chain of volcanoes at the seafloor

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14
Q

Warning signs by scientist

A

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

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15
Q

Explosive

A

Water vapor
trapped gases
BASALTIC LAVA

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16
Q

Most Active Volcano

A 
Mount Vesuvius 
Sakurajima 
Merapi
Nyiragongo
Ulawun
Taal
Mauna Loa
17
Q

Earthquake

A

forms of wave energy that are transmitted through bedrock.

18
Q

Movement of the tectonic plates

A

pressure builds up

19
Q

Hypocenter

A

FOCUS

underground focus point origin

20
Q

Epicenter

A

on the earth’s surface

21
Q

Seismic waves

A

elastic wave in the earth produced by an earthquake

22
Q

surface waves

A

move along the surface of the planet

23
Q

body waves

A

can travel through the earth’s inner layer

24
Q

primary wave

A

solid and liquid

same

25
Q

secondary wave

A

solid only

opposite

26
Q

Shallow focus earthquake

A

0-70 km deep

larger and more damage

27
Q

Deep focus earthquake

A

70-700 km deep

28
Q

Fault

A

a crack across

29
Q

Fault plane

A

first part where the fault occurs

30
Q

Fault trace

A

where it is

mark

31
Q

Hanging wall

A

block positioned over the fault

32
Q

Foot wall

A

block positioned under the fault

33
Q

Normal Fault

A

foot wall sa taas

34
Q

Reverse fault

A

hanging wall sa taas

35
Q

Tectonic Earthquake

A

most common

Happens when the shifting of the earth’s plates

36
Q

Volcanic Earthquake

A

often occurs in volcanic region

37
Q

Collapse earthquake

A

small earthquake located underground/mines

38
Q

Explosion earthquake

A

results from chemicals/ nuclear devices

FIRST QUARTER (7 decks)

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