ICSE ICSE Class 7 - CISCE Question Bank Solutions

Fill in the blank:

The layer of the atmosphere where ozone is found is called the ________.

State whether the following is true or false.

Communication satellites orbit in thermosphere.

Fill in the blank:

The ozone layer protects us from the _____________ of the sun.

State whether the following is true or false.
The stratosphere extends from the top of the troposphere up to 80 km above the surface of the earth.

Write True or False.

Ozone is found in the troposphere.

Write True or False.

The ozone layer is harmful to humans and animals.

How is the atmosphere kept in place around the earth?

Name the important gases that are found in the atmosphere.

Write True or False.

CFCs and BFCs protect the ozone layer.

What is the troposphere?

What is the difference between the troposphere and the tropopause?

Write briefly about the layers of the atmosphere

State any three characteristics of the stratosphere

How is the presence of the ozone layer essential to preserve life on earth?

State any three characteristics of the mesosphere.

Why is the thermosphere important?

Explain the significance of the earth’s atmosphere.

This is a picture of a supersonic aircraft.

In which layer of the atmosphere does this airplane normally fly?

Choose the correct option.

The ozone layer is found between _______ km above the earth’s surface.

This is a picture of a supersonic aircraft.

This layer of the atmosphere is also known to protect living beings from the harmful rays of the sun. How?