Advertisements
Advertisements
Question
Why is the troposphere the most important of all the layers of the atmosphere?
Solution
The troposphere is the lowermost layer of the atmosphere. Its average height is 13 km and extends roughly to a height of 8 km near the poles and about 18 km at the equator. It is the most important layer of the atmosphere because:
- Thickness of the troposphere is greatest at the equator because heat is transported to great heights by strong convectional currents.
- This layer contains dust particles and water vapour.
- All changes in climate and weather take place in this layer.
- The temperature in this layer decreases at the rate of 1°C for every 165m of height.
- All biological activities take place in this layer.
APPEARS IN
RELATED QUESTIONS
We often leave the lights switched on and fans running when we are not in the room. We switch on the air-conditioning even though we don’t really need it. We insist on being dropped to school in the car every day. Thus, we waste valuable energy which is generally produced by burning coal and petroleum. As you know, the burning of these fuels release gases that pollute the atmosphere.
Make a list of the similar things that we do without realizing that we are destroying the environment. Think of the ways that we can behave differently.
Fill in the blank
______ per cent of the atmosphere is made of nitrogen.
Fill in the blank
The _________________ is the layer of the atmosphere that help in radio transmission.
The upper part of the thermosphere is called the ______.
Choose the correct answer.
This layer of the atmosphere has the lowest temperature.
Name the important gases that are found in the atmosphere.
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?
Make a collage using pictures or a chart to show the various causes and consequences of global warming.
Tick the correct answer
Which of the following gases protects us from harmful sun rays?
Tick the correct answer
The most important layer of the atmosphere is
Tick the correct answer
As we go up the layers of the atmosphere, the pressure
Answer the following question briefly:
Name the different layers of atmosphere.
State whether the following sentence is true (T) or false (F).
The atmosphere is composed mainly of nitrogen and oxygen.
Short Answer Type Question:
What is the atmosphere? Write about its different layers.
Mountaineers carry oxygen in cylinders when they climb mountains that are more than 5000 m high. What could be the reason for that?
When is World Environment Day Celebrated?
The 0° longitude is called ________ meridian.
The ______ layer protects us from the harmful UV rays coming from the sun.
What are the different layers of the atmosphere?
The upper limit of the troposphere is called as ______.
The Limit of Clouds is upto ______.
Give Reason:
Exosphere is characterised by aurora Australis and aurora borealis.
Atmospheric layer important for human beings is ______.
Atmosphere is divided into ______ different layers.
The ozone layer protects all life on earth from the harmful ______ rays of the sun.
Define troposphere.
The two forms of oxygen found in the atmosphere are
