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Science > Structure of Earth's Layers > Flashcards

Structure of Earth's Layers Flashcards

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1
Q

Waves _

A

transmit energy

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2
Q

What is the high point of a wave?

A

crest

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3
Q

What is the low point of a wave?

A

trough

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4
Q

What is the measurement from the rest position to the highest point ?

A

amplitude

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5
Q

What is the the distance between waves

A

wavelength

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6
Q

travel outward in all directions from where the ground breaks and are picked up by seismographs

A

seismic waves

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7
Q

Some of the waves travel through the Earth produce sharp jolts but less damage is a …

A

body waves

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8
Q

Moves across the surface of the Earth more damage than body waves is a….

A

surface waves

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9
Q

What are the 2 types of Body waves?

A

P-waves and S-waves

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10
Q

Travel through solids, liquids, and gases and move in compressional waves

A

P-wave

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11
Q

Only moves through solid materials and move in transverse waves

A

S-waves

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12
Q
  • The 1st to be detected by seismometer
  • Longitudinal motion
  • Refract hen changing earth’s layers-faster in denser material
  • Fastest moving waves
  • Travel fastest through SOLID inner core
A

P-wave

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13
Q
  • Half as fast as P-waves
  • Arrive second at seismographs ( P before S)
  • Transverse motion
  • Can only travel through solids
A

S-wave

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14
Q
  • Slowest of the waves
  • Travel along the ground
  • Does the most damage
A

Surface wave

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15
Q

What are Earth’s 4 layers?

A

Crust
Mantle
Outer Core
Inner Core

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16
Q

What are the 2 types of crusts?

A

Oceanic ( thin/ matic/oceans ) and Continental crust ( continents / felsic )

17
Q

What layer is the biggest?

A

Mantle

18
Q

Convection currents are located in the …

A

mantle

19
Q

Brittle , rigid ,and solid

Above the Asthenosphere

A

Lithosphere

20
Q

Behaves plastically, solid but flexible ( putty)

A

Asthenosphere

21
Q

What is Conduction

A

heat that’s transferred by atoms colliding and flows from warmer to cooler

22
Q

What is Convection

A

Uses currents, can occur in solids, liquids, or gases; heat is transferred from the core to the mantle’heat rises, and cool currents sink

23
Q

Which core layer is solid and which is liquid ?

A

Solid inner core

Liquid outer core

Science (3 decks)

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