Tragic Tectonics Thickers questions Flashcards

To answer

1
Q

What are crafts, that can fly over Kármán line , known as?

A

Spacecrafts

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2
Q

What are crafts, that can only fly under Kármán line , known as?

A

Aircrafts

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3
Q

What are the percentages of the gases in the Earth atomsphere

A
  • Nitrogen: 78%
  • Oxygen: 21%
  • Argon: 0.9%
  • Carbon dioxide: 0.04%
  • Other gases: 0.1%. These include trace amounts of methane, water vapor, and neon.
  • Water vapor: variable. On average, it is around 1% at sea level and 0.4% over the entire atmosphere.
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4
Q

Average temp

Earth’s atomsphere

A

14℃

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5
Q

Layers of

Earth’s atomsphere

A
  1. Troposphere:Where the majority of breathing air is.
  2. Stratosphere:Mountain peaks and planes fly here
  3. Mesosphere:Coldest layer
  4. Thermosphere:Warmest due to ozone layer absorbing radiation.Kárman Line resides here
  5. Exosphere:Highest layers, in which the air molecules rarely collide with eachother
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6
Q

Thickness of layers in

Earth’s atomsphere

A
  1. Troposphere:0-12Km
  2. Stratosphere:12-50Km
  3. Mesosphere:50-80Km
  4. Thermosphere: 80-700Km
  5. Exosphere:700-10,000Km
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7
Q

Average temp

Earth’s Crust

A

Same as atomsphere(14℃)

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8
Q

Composition

Continental Crust

A

Less denser, felsic rocks, such as granite and dalicite

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9
Q

Average thickness

Continental Crust

A

15km

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10
Q

Composition

Oceanic crust

A

More dense, balstic rocks, such as balsalt and manganase

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11
Q

Average thickness

Oceanic crust

A

50km

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12
Q

How many tectonic plates are there?

A

9

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13
Q

Names

Tectonic plates(9)

A
  1. African Plate: Underlies Africa and covers approximately 61,300,000 km².
  2. Antarctic Plate: Contains Antarctica and the surrounding ocean floor, with an area of about 60,900,000 km².
  3. Eurasian Plate: Encompasses most of the continent of Eurasia, spanning around 67,800,000 km².
  4. Indo-Australian Plate: Formed by the fusion of the Indian and Australian plates (sometimes considered as two separate plates), covering approximately 58,900,000 km².
  5. Australian Plate: Separated from the Indo-Australian Plate about 3 million years ago, with an area of 47,000,000 km².
  6. Indian Plate: A minor plate that separated from Gondwana, covering 11,900,000 km².
  7. North American Plate: Large tectonic plate including most of North America, Greenland, and part of Siberia, with an area of 75,900,000 km².
  8. Pacific Plate: An oceanic tectonic plate beneath the Pacific Ocean, spanning approximately 103,300,000 km².
  9. South American Plate: Major tectonic plate including most of South America and a large part of the south Atlantic, with an area of 43,600,000 km².
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14
Q

What do divergent boundaries do?

A

Allow for new crust to be created via rift vallies/ravines

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15
Q

What do convergent boundaries do

A

Allow for existing crust to be destoryed via:
* Fold mountains with two continentals
* Trenches with two oceanics
* Volcanoes with one continental and oceanic

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16
Q

What do conservative boundaries do?

A

Allow for crust to be moved via:
* Earthquakes with continental
* Tsumai with oceanic
* Both with both

17
Q

What do hotspots create

A

They allow for new island chains/archipelago to be made , such as Hawail

18
Q

Average temp

Mantle

A

200-4000℃

19
Q

Composition

Mantle

A

Molten silcate rocks, as well as a abundance of oxygen,iron and magnesuim

20
Q

Explain

Convection current

A
  1. Heat Source: Heat from the Earth’s core causes magma (molten rock) in the mantle to rise towards the crust. This heated rock becomes less dense and moves upwards due to convection currents².
  2. Rising Magma: As the hot current nears the crust, it begins to cool and sink back towards the core. The sinking magma drags the tectonic plates along with it across the surface of the Earth².
  3. Plate Movement: When heated molten rock rises, it drags the tectonic plate that rests on top of the mantle. This movement can either push plates apart or bring them together, depending on the specific interactions between plates⁴.
  4. Converging and Diverging Currents: Convection currents in the upper mantle create a dynamic system. Converging currents drive plates into each other, while diverging currents pull them apart. These movements contribute to the shifting of tectonic plates¹.
  5. Self-Driven Plates: Interestingly, some tectonic plates move faster than the currents underneath them. For instance, the Nazca Plate moves eastward faster than the mantle beneath it. This suggests that the plates are not merely passive passengers on the currents; they also pull themselves along during collisions and interactions¹.
21
Q

What two layers are in the Earth’s Lithiosphere

A
  1. Crust
  2. Upper mantle
22
Q

What three layers are in the Earth’s Asentosphere

A
  1. Lower mantle
  2. Outer core
  3. Inner Core
23
Q

Average temp

Outer core

A

2700-4200℃

24
Q

Composition

Outer core

A

Liquid Iron and Nickel

25
Q

Average temp

Inner core

A

5500℃(Sun temp)

26
Q

Composition

Inner core

A

A solid iron-nickel alloy ball