folded mountains form

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Folded mountains form • When isostasy occurs • When continents collide (like Asia and India, and the Himalayas) • When continents diverge • After earthquakes

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Folded mountains form. When isostasy occurs When continents collide (like Asia and India, and the Himalayas) When continents diverge After earthquakes. When the oceanic and continental lithospheres collide. Oceanic plates subduct Continental plates subduct They stop each other - PowerPoint PPT Presentation

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Page 1: Folded mountains form

Folded mountains form

• When isostasy occurs• When continents collide (like Asia and

India, and the Himalayas)• When continents diverge• After earthquakes

Page 2: Folded mountains form

When the oceanic and continental lithospheres

collide

• Oceanic plates subduct• Continental plates subduct• They stop each other• They reach isostasy

Page 3: Folded mountains form

What happens when two oceanic plates collide?

• The denser plate fractures• The less dense plate fractures• The less dense plate subducts• The denser plate subducts

Page 4: Folded mountains form

What type of mountain is formed when higher blocks

fault?

• A folded mountain• A salt-block mountain• A fault-block mountain• A flawed-block mountain

Page 5: Folded mountains form

What happens when two continental plates collide?

• Large mountains can form• Dome mountain are likely to form• The plates subduct beneath each other• The impact can cause large

earthquakes

Page 6: Folded mountains form

What is subduction?

• Once plate collides with another• One plate destroys another• One plate goes beneath another• One plate divides another

Page 7: Folded mountains form

Which of these are all types of mountains

• Rolling, glacial, subterranean, cascades• Rocky, green, smoky, white• Fault-block, dome, volcanic, folded• Salt-block, dome,magmun,frozen

Page 8: Folded mountains form

What happens when oceanic and continental plates collide?• The asthenosphere and the lithosphere

are disrupted• The continental lithosphere subducts

beneath the oceanic lithosphere• Mountains can be created through uplift

and volcanic eruptions.• Valleys are created by the excessive

energy release

Page 9: Folded mountains form

A dome mountain is a mountain formed

• By the collision of continental plates• By the eruption of magma from below

Earth’s surface and out the top.• When faults break off dome-shaped

rocks• By pressure from magma below Earth’s

surface that does NOT erupt

Page 10: Folded mountains form

A volcanic mountain is formed by

• The uplift of rock during continental plate collisions

• Rock layers that are bent and squeezed• Pressure of magma that does NOT

erupt on the Earth’s surface.• Magma eruptions on Earth’s surface

Page 11: Folded mountains form

What are the fasted waves?

• P waves• T waves• S waves• Q waves

Page 12: Folded mountains form

Earthquakes generally occur at plate boundaries where

• Stress on rocks is greatest• The most rocks found• Stress on rocks is low• Magnetic pull is greatest

Page 13: Folded mountains form

To find the distance to an earthquake’s epicenter,

scientists• Chart the lag time between preshocks and

aftershocks• Use radio wave detection devices• Analyze the arrival times of P and S

waves.• Analyze the arrival times of Love waves an

Rayleigh waves.

Page 14: Folded mountains form

If you are in a car during an earthquake, you should

• Drive to a bridge• Stop in a safe place• Get out and run like the wind• Park east of tall buildings

Page 15: Folded mountains form

What happens to tsunamis as the move toward shore?

• They decrease in height• The die out• They turn to riptides• They increase in height

Page 16: Folded mountains form

Which is NOT a cause of tsunamis?

• Volcanic eruption• Tornado• Undersea landslide• Undersea earthquake

Page 17: Folded mountains form

P waves are also known as

• Secondary waves• Compression waves• Love waves• Rayleigh waves

Page 18: Folded mountains form

How do scientist find the epicenter of an earthquake

• By comparing arrival times of P and S waves

• By digging as several locations• By comparing departure times of P and

S waves• By looking at satellite photos of

tsunamis

Page 19: Folded mountains form

Why do earthquakes usually occur at plate boundaries

• The rock at the edges of tectonic plates is soft, and gives easily

• Rock at the edges of tectonic plates is under great stress.

• The boundaries between tectonic plates have been seismically active for millions of years

• The last place that motion in an earthquake is detected.

Page 20: Folded mountains form

This area is both a major earthquake zone and volcano

zone.

• Pacific ring of volcanoes• Pacific ring of fire• Oceanic ring of fire• Pacific island arc

Page 21: Folded mountains form

Lichens and moss produce weathering agents called

• Exfoliation• Organic activities• Organic acids• Sulfuric acids

Page 22: Folded mountains form

Which of the following is NOT an agent of mechanical

weathering

• Ice• Wind• Acid• Gravity

Page 23: Folded mountains form

Abrasion is caused by all of the following EXCEPT

• Wind• Water• Ice wedging• Gravity

Page 24: Folded mountains form

How does the amount of a rock’s surface area affect

weathering?

• Larger area, more weathering• Larger area, less weathering• Smaller area, more weathering• No affect at all

Page 25: Folded mountains form

Plant and animal activities cause what king of weathering• Chemical• Mechanical• Chemical and mechanical• None at all

Page 26: Folded mountains form

Climates that have the fastest rate of weathering are

• Hot and dry• Hot and wet• Cold and dry• Cold and then hot

Page 27: Folded mountains form

Steep slopes have high amounts of what kind of

weathering

• Chemical• Mechanical• Chemical and mechanical• None

Page 28: Folded mountains form

Tropical climates generally form soil in which the “B”

horizon is covered in a thin layer of

Sand

Rock

Humus

Clay

Page 29: Folded mountains form

In which of the following erosion processes is gravity

NOT a major factor• Creep• Mudflow• Dust storm• Slump

Page 30: Folded mountains form

Which of the following is an example of a peneplain?

• Low, rolling hills• Sand dunes• Valleys• Ponds

Page 31: Folded mountains form

In what kind of climate is the weathering rate the slowest

• Cold, wet• Alternating hot and cold• Hot and dry• Warm and humid

Page 32: Folded mountains form

When overlying rocks are removed from granite that was formed deep beneath Earth’s surface decreases, and the granite forms long curved

cracks called

• Exfoliation• Joints• Gullies• Valleys