What is atmosphere in ecology?
An atmosphere is the layers of gases surrounding a planet or other celestial body. Earth’s atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases.
What is a simple definition of atmosphere?
An atmosphere is the layers of gases surrounding a planet or other celestial body. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.
What is the atmosphere short answer?
The atmosphere is the blanket of gases which surrounds Earth. It is held near the surface of the planet by Earth’s gravitational attraction. Without the atmosphere there could be no life on Earth. keeps the climate on Earth moderate compared to that of other planets.
What is atmosphere short answer Class 3?
Thick envelop of air around the earth is called atmosphere. Air is a mixture of many gases like oxygen, nitrogen, carbon dioxide, argon etc. We inhale oxygen from air. Atmosphere contains 21% oxygen, 78% nitrogen and 1% other gases.
What is atmosphere Class 11?
The atmosphere is composed of gases, water vapour and dust particles. The proportion of gases changes in the higher layers of the atmosphere in such a way that oxygen will be almost in negligible quantity at the height of 120 km.
What is atmosphere Class 8?
The layer of air above the earth is called atmosphere. The air in our atmosphere extends upto 300 kilometres above the surface of Earth. The atmosphere contains a tremendous amount of air. Atmospheric pressure is the air pressure which is exerted by the weight of air present in the atmosphere.
How would you define atmosphere of the earth?
The atmosphere of Earth, commonly known as air, is the layer of gases retained by Earth’s gravity that surrounds the planet and forms its planetary atmosphere.
What is a Atmosphere in Kid definition?
The atmosphere. is the layer of gas that surrounds Earth. It is often called air. Other planets, and some of their larger moons, also have atmospheres. The atmosphere consists of several different gases.