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Geology Chapter 10 > Chapter 15 > Flashcards

Chapter 15 Flashcards

1
Q

What two energy sources creates Gyres?

A

Trade winds and Westerlies

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2
Q

Name the 2 major affects that the Oceans circulation has on the earth?

A

helps regulate the worlds tempertures

and can change weather patterns

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3
Q

Who Discovered the Gulf Stream?

A

sailors and fisherman

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4
Q

What is the Gulf Stream?

A

it is Western edge of the North Atlantic gyre

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5
Q

Who made the first map of the Gulf Stream?

A

Benjamin Franklin

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6
Q

4 parts of the Ocean floor

A

Continental shelf
Continental slope
Contiental rise
Abyssal Plain

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7
Q

What is an ocean wave?

A

a wave is created by the wind, it is an energy wave passing through the warm water

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8
Q

what is the top of a wave called

A

Crest

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9
Q

Name or list 3 factors that determine the height, length and period of a wave

A

wind speed

length

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10
Q

Name 2 erosional features you can find on a shore line

A

sea arch

sea stack

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11
Q

Name 2 erosional features you can find at the shore

A

sea arch

sea stack

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12
Q

Name 4 depositional features that you can find at the shore

A

spit
bay mouth bar
tombolo
barrier island

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13
Q

What are the 4 types of artificial structures of hard stabilization?

A

Seawall
breakwater
jetties
groins

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14
Q

What are 2 alternatives to artificial structures?

A

Beach nourishment

relocation

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15
Q

What will happen down current from groins?

A

erosion

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16
Q

What is a Rouge wave?

A

abnormally high wave unrelated to local storm conditions. caused by waves joining together

17
Q

What are 3 indications that a rip current is present

A

Cloudy water with floating debris
Reduced wave height
depressions on the beach

18
Q

Is a tsunami also called a seismic wave?

A

NOOOOOO

19
Q

Is a Tsunami a free wave or a forced wave?

A

Free wave

20
Q

Is a tsunami a deep water wave or shallow water wave?

A

Shallow water wave

21
Q

what is the average wavelength of a tsunami?

A

100-200 km (60-120 miles)

22
Q

what is the average speed of a Tsunami?

A

500 km/hr to 1,000 km/hr (310to 620 miles per hour)

23
Q

List the top 5 causes of a tsunami on the order of power

A 
Landslide
submarine landslide
Volcanoes
Earthquakes
Meteorites
24
Q

Why is the Aleutian island tsunami on April 1, 1940

A

it helped create the Pacific Ocean Tsunami Early warning system (Hawaii)

Geology Chapter 10 (3 decks)

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