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Earthquakes

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Mattie Grant

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โˆ™ 2021-10-13 18:34:50
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Cards in this guide (28)
Which rocks are affected by chemical weathering

The effect of chemical weathering via acidic rainfall generally affects but is not limited to those rocks containing calcium or calcium carbonate, such as limestone and marble.

How many earthquakes happen each day

Approximately 275 that are large enough to be felt by humans. For more information, see below:

According to the US Geological Survey there are approximately 1,000,000 earthquakes around the world every year (although the vast majority of these are so small they can only be detected by sensitive scientific equipment).

Of these 1,000,000, approximately 1/10 are large enough to be felt by humans. This means that on any given day there will be an average of 2750 earthquakes around the world of which 275 are large enough to be felt by humans.

Perhaps even more surprisingly, on average there are around 100 earthquakes a year that are large enough to cause damage (however they often don't because they occur away from inhabited areas). This means there is a little under a 1 in 3 chance of there being a "large" earthquake somewhere in the world on any given day of the year.

What are small tremors before a major earhquake

Small tremors before a major earthquake are referred to as foreshocks. They occur before 70 percent of large seismic events, and to a lesser extent before smaller earthquakes.

The low bedrock ridges and peaks of a highly eroded basin and range desert landscape are called

The low bedrock ridges and peaks of a highly eroded basin and range desert landscape are called insellbergs. Deposits of windblown salt are called loess.

Which is a glacial feature caused by erosion

horns, cirques, Ushaped valleys, and glacial lakes.

Glacial erratics if your doing it for

What forms sand dunes

Wind forms sand dunes by picking up dry sediments and accumulating them over time to create over time.

Do s-waves travel faster than p-waves

no p waves travel faster than s waves

What causes the erosion of sand dunes

Wind, mostly. Also the sea, if the dunes are near the sea.

Shearing seismic waves that move rocks and other matter in a direction perpendicular to the waves are traveling

Primary waves (p waves)

What is the amount of energy released by an earthquake called

This is known as the magnitude of the earthquake.

When a glacier is retreating does the upstream ice is still moving forward toward the downstream terminus of the glacier

Yes, it is like a shrinking conveyor belt. If the conveyor belt stops moving, then it is no longer classified a glacier; it is then an ice field.

Compare and contrast P waves and S waves

p waves travel through solids and s waves travel through liquids

Where a major earthquake has happened in the past but not in a while is called a seismic

Seismic gap.

An example of a Mitigation activity is

Building earthquake-resistant structures n earthquake zones.

Which scale measures the magnitude of an earthquake

The Moment Magnitude scale and the Richter magnitude scale are used to measure the magnitude (energy released) during an earthquake.

What are the measuring tools in cooking

Measuring cups are likely the most common. Measuring spoons are also widely used. A kitchen scale is also a measuring tool used in cooking.

How do dunes migrate in the direction of the wind

In regards to "sand dunes" they migrate in the direction of the wind as sand particles being individually light can travel on the wind in forms of "sand storms" and therefore migrate overtime, create new dunes or reshape existing dune structures by either adding or withdrawing sand from the wind directions movement.

What are the three main types of glacial erosion

The 3 main types of glacial erosion are plucking, abrasion and freeze thaw.

What do geologists use seismic waves for

Geologist use seismic waves to lear about Earths Interior<3'

What is the relationship between intensity and magnitude of an and earthquake

the relationship between earthquakes magnitude is the size or amount of energy an earthquake produces and has no connection to hour often earthquakes occur.

What is an earthquakes magnitude a measure of

The magnitude of an earthquake is a measurement of the amount of energy released.

How the gravitational force between earth and the moon would change if the distance if the distance between them increased

If the distance between the Moon and the Earth would increase then the gravitational force between them would be stronger. If they would be separated then the gravitational force is weaker.

Why are desert landscapes jagged and rocky

there is little chemical weathering to round the landscapes

How does under water earthquake affect the ocean water

It causes the ground at the ocean floor to shift, resulting in the displacement of water. The beginnings of a potential tsunami!

Is it true or false that the closer an earthquake the greater the time between the arrival of P waves and the arrival of S waves

true

What plate boundary causes seismic waves

Destructive plate boundary.

What is windblown silt that blankets a landscape

loess

If the steep face of a sand dune is on the southeast side of a dune then the prevailing wind in this area is from the

Southeast

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