Atmosphere - Study Mode
[#181] What is the name of the layer closest to the Earth?
Correct Answer
(C) Troposphere
Explanation
Solution: The troposphere is the lowest and closest layer of Earth's atmosphere. Most of the mass (about 75-80%) of the atmosphere is in the troposphere. Most types of clouds are found in the troposphere, and almost all weather occurs within this layer.
[#182] Which of the following constituents of the atmosphere are important from the climatic point of view ? 1. Nitrogen 2. Oxygen 3. Carbon dioxide
Correct Answer
(D) Only 3
Explanation
Solution: A minor but very important component of the atmosphere, carbon dioxide is released through natural processes such as respiration and volcano eruptions and through human activities such as deforestation, land use changes, and burning fossil fuels. Humans have increased atmospheric CO2 concentration by more than a third since the Industrial Revolution began. This is the most important long-lived "forcing" of climate change.
[#183] The Sea breeze blows during ________
Correct Answer
(B) Day from sea to land
Explanation
Solution: During the day, the sun heats up both the ocean surface and the land. The wind will blow from the higher pressure over the water to lower pressure over the land causing the sea breeze. The sea breeze strength will vary depending on the temperature difference between the land and the ocean. At night, the roles reverse.
[#184] What is the name of the layer above Earth's surface which is located at the height of 8km from poles and 16km from the equator?
Correct Answer
(C) Troposphere
Explanation
Solution: The upper boundary of the layer, known as the tropopause, ranges in height from 5 miles (8 km) near the poles up to 11 miles (18 km) above the equator.
[#185] Which one of the following is the cloud that is dark-grey or black, found at very low height and brings the real rain?
Correct Answer
(D) Nimbostratus
Explanation
Solution: Nimbostratus clouds cover the sky in a dark gray layer. They can extend from the low and middle layers of the atmosphere and are thick enough to blot out the sun. Nimbostratus are the quintessential rain cloud.