Question

Give the answer:
What is a Volcano?
What is an Earthquake?
What is a Tornado?
What causes Tsunamis?

Chapter: Natural Disasters

Answer 1

Answers:-

1. A volcano is an opening in the Earth's crust through which molten rocks, gases and steam come out with force on the Earth's surface. The materials which come out, accumulat to form volcanic mountains.

2. Earthquake is the term used to describe to trembling the Earth's surface. Most earthquakes are minor tremors while larger earthquakes usually begin with slight tremors and later one take the form of one or more violent shocks.

3. A tornado is a violent windstorm and is mainly characterised by a twisting, funnel-shaped cloud. It is accompanied by a thunderstorm and produced when cool air overrides the layer of warm air.

4. Tsunamis are ocean waves of a longer duration produced by earthquakes or underwater landslides. Tsunamis are often incorrectly refered to as tidal waves. A tsunami can travel at the speed averaging 450 miles per hour in the open ocean.

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Answer 2

Explanation:

$\bf\blue{answer}$

• volcano is a opening of the earth's core to its surface.It releases hot molten lava.
• The movement of plates under the earth is called earth quake. It is a vibration felt by us.
• When air blows with high pressure around a particular place cause the sir to rotate and move causing destruction called tornado.
• $\bold{cause of tsunami}$

• Earthquake under the sea
• high pressure of air.