1.3 the atmosphere.

Question 1

atmosphere.

Answer 1

a mixture of gases that surrounds the Earth.

Question 2

Troposphere

Answer 2

The troposphere is the lowest layer in the atmosphere.

Question 3

Stratosphere

Answer 3

The ozone layer lies within the stratosphere. Ozone molecules in this layer absorb high-energy ultraviolet (UV) light from the Sun and convert it into heat.

Question 4

Mesosphere

Answer 4

Here, the temperature grows colder as you rise up through the mesosphere. The coldest parts of our atmosphere are located in this layer and can reach –90°C.

Question 5

Thermosphere

Answer 5

this is a region where the temperature increases as you go higher up.

Question 6

Exosphere

Answer 6

Exosphere is the final frontier of the Earth’s gaseous envelope.

Question 7

Ionosphere

Answer 7

ionosphere is a series of regions in parts of the mesosphere and thermosphere where high-energy radiation from the Sun

Question 8

green house effect

Answer 8

the process through which heat is trapped near Earth’s surface by substances known as ‘greenhouse gases.’