Changes in Ecosystems

What is Volcano?

• Large storm with high wind speeds.

• An opening from where Magma erupts on the surface.

• An opening from where the magma deposited inside the Earth's surface.

• A large cloud that generates rain or hail or storm.

Molten rock found on the surface of the Earth is known as -

• Ash

• Magma

• Lava

• Impervious rock

Earthquakes are this kind of occurrence?

• Frequent

• Atmospheric

• Supernatural

• Geological

What is the magnitude of an earthquake?

• Amount of energy released by an earthquake.

• The destruction caused by an Earthquake.

• Duration of an Earthquake.

• Length of an Earthquake.

What is the location on the Earth's surface above where the Earthquake began?

• Epicentre

• Quake Point

• Focal Point

• Focal Centre

What is Tsunami?

• Volcanic eruption on the ocean's floor.

• Turbulent waves caused by Hurricanes.

• A point where ocean meets shoreline.

• Earthquake on the ocean's floor.

What is Fault?

• A break in the rocks.

• Where two tectonic plates come together.

• Where Seismic activity is recorded.

• Bulge in the Earth's surface.

Name a natural calamity which does not involve wind.

• Tornadoes

• Drought

• Thunderstorms

• Cyclones

A cyclone is known as ________________ in the American Continent.

• Hurricane

• Typhoon

• Tornado

• Thunderstorm

Which of the following factors contribute to the development of Cyclones?

• Wind Speed

• Temperature

• Humidity

• All of these