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Physical Science > Chapter 25.3 and .4 > Flashcards

Chapter 25.3 and .4 Flashcards

1
Q

What is the boundaries that marks the density change between layers?

A

Discontinuity

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2
Q

How is Discontinuity identified?

A

Using Seismic waves

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3
Q

What is a shadow zone?

A

Where No seismic waves have been recorded

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4
Q

Another term for shadow zone?

A

Deadzone

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5
Q

What are the degrees that shadow zone fall between

A

105 and 140

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6
Q

Is the outer core a solid or a liquid?

A

Liquid

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7
Q

Is the inner core a solid or liquid?why?

A

Solid.because the pressure.

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8
Q

What makes up the Lithosphere

A

The crust and uppermost mantle

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9
Q

What is the Asthenosphere?

A

A plastic-like layer which earth plates moves.

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10
Q

Which elements make up the mantle?

A
  1. Calcium
  2. Aluminum
  3. Iron
  4. Magnesium
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11
Q

Which elements make up the core?

A
  1. Nickel

2. Iron

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12
Q

The measure of a fluid’s such as lava, resistance to flow?

A

Viscosity

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13
Q

The chemical compound silicon dioxide,SiO2,which is common ingredients in most magma?

A

Silica

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14
Q

Tends to be small, heights in the hundreds of meter range, and have short eruptions cycles?

A

Cinder cone Volcanoes

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15
Q

board,flat structures composed of layer upon of lava flows?

A

Shield Volcanoes

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16
Q

Large and steep-sided,often thousands of meters high and tens of kilometers across the base, and composed of layer of both lava and ash

A

Composite Volcanoes

17
Q

What is molten, or liquid, rocks that is stored in earth called?

18
Q

Where is the Ring of Fire located?

A

Pacific ocean

19
Q

What form when tectonics plate collide along subduction zones?

20
Q

What two specific locations have volcanic activity due to divergent

A

1,East-African rift valley

2.Mid Atlantic ridge

21
Q

Are hot spots stationary?

22
Q

what are created by hot spots

A

Islands ex: Hawaii islands

23
Q

If a viscosity is high is it going to flow slower of faster?

24
Q

If magma has a high viscosity is it going to have more or less silica?

25
Q

What is pyroclastic material?

A

Any solid material that erupts from a volcano

26
Q

What is the smallest type of pyroclastic material?t

27
Q

What is the biggest Pryoclastic Materials?

A

Blocks and bombs

28
Q

What are the gases that come from volcanoes

A

Water vapor
carbon dioxide
Sulfur dioxide

29
Q

How are volcanoes are classified

A

1.Size
2.shape
3,materials that erupt from them

30
Q

What are the 3 types of volcanoes

A

Cinder cone volcano
Shield Volcano
Composite volcano

Physical Science (5 decks)

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