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What are earthquakes?
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Anwer these questions
What is a seismogram?
How do earthquaken affect the earth and its people?
How do volcanoes erupt? Name three types of volcances
How does a tsunami affect human life?
what is drought? Name the conditions that can cause a drought.​

Answer 1

Answer:

An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves

A seismogram is a graph output by a seismograph. It is a record of the ground motion at a measuring station as a function of time.

A drought is a prolonged period with less-than-average amounts of rain or snow in a particular region. The severity of the drought depends on the amount of time that a region receives below-average precipitation. For example, a few weeks without rain could stress a farmer's crops during the growing season.

Answer 2

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Q.1: What are earthquakes?

Ans: Earthquakes are caused by a sudden release of violent ground energy caused either by the shifting of the earth's crust or volcanic/magmatic activity.

Q.2: What is a seismogram?

Ans: A seismogram is a graph output by a seismograph. It is a record of the ground motion at a measuring station as a function of time.

Q.3: How do earthquaken affect the earth and its people?

Ans: Earthquake environmental effects are the effects caused by an earthquake, including surface faulting, tsunamis, soil liquefactions, ground resonance, landslides and ground failure, either directly linked to the earthquake source or provoked by the ground shaking.

Q.4: How do volcanoes erupt? Name three types of volcances.

Ans: Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts. ... Another way an eruption happens is when water underneath the surface interacts with hot magma and creates steam, this can build up enough pressure to cause an explosion. There are three types of volcanoes: cinder cones (also called spatter cones), composite volcanoes (also called stratovolcanoes), and shield volcanoes.

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