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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
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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 • They reach isostasy
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
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
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
What is subduction? • Once plate collides with another • One plate destroys another • One plate goes beneath another • One plate divides another
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
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
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
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
What are the fasted waves? • P waves • T waves • S waves • Q waves
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
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.
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
What happens to tsunamis as the move toward shore? • They decrease in height • The die out • They turn to riptides • They increase in height
Which is NOT a cause of tsunamis? • Volcanic eruption • Tornado • Undersea landslide • Undersea earthquake
P waves are also known as • Secondary waves • Compression waves • Love waves • Rayleigh waves
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
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.
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
Lichens and moss produce weathering agents called • Exfoliation • Organic activities • Organic acids • Sulfuric acids
Which of the following is NOT an agent of mechanical weathering • Ice • Wind • Acid • Gravity
Abrasion is caused by all of the following EXCEPT • Wind • Water • Ice wedging • Gravity
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
Plant and animal activities cause what king of weathering • Chemical • Mechanical • Chemical and mechanical • None at all
Climates that have the fastest rate of weathering are • Hot and dry • Hot and wet • Cold and dry • Cold and then hot
Steep slopes have high amounts of what kind of weathering • Chemical • Mechanical • Chemical and mechanical • None
Tropical climates generally form soil in which the “B” horizon is covered in a thin layer of Sand Rock Humus Clay
In which of the following erosion processes is gravity NOT a major factor • Creep • Mudflow • Dust storm • Slump
Which of the following is an example of a peneplain? • Low, rolling hills • Sand dunes • Valleys • Ponds
In what kind of climate is the weathering rate the slowest • Cold, wet • Alternating hot and cold • Hot and dry • Warm and humid
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