Understanding Earth's Atmosphere

Identify the layer of gases which protect the Earth from harmful radiation and cosmic rays coming from the outer space

• Lithosphere

• Atmosphere

• Chromospheres

• Mesosphere

What is the most abundant gas element which comprises the 78 % of our atmosphere?

This special thin layer of the stratosphere which protect and absorbed harmful ultraviolet radiation from the Sun

• SPF 30

• Sun Screen

• Ozone Layer

• Sun Block

Is a natural light display in the sky, particularly in the north and south pole region that is caused by the collision of atomic particles in high altitude atmosphere.

This layer of the atmosphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 to 9 miles) and it was termed as change due to changes of the gases present in this layer. This part of the atmosphere is the most dense. Almost all weather is in this region.

• Mesosphere

• Stratosphere

• Troposphere

• Exosphere

This layer is just above the troposphere and extends to 50 kilometers (31 miles) high. The ozone layer, which absorbs and scatters the solar ultraviolet radiation, is in this layer.

• Mesosphere

• Stratosphere

• Exosphere

• Thermosphere

The coldest layer of the atmosphere and located above the stratosphere and extends to 85 kilometers (53 miles) high. Meteors burn up in this layer.

• Mesosphere

• Thermosphere

• Exosphere

• Troposphere

The hottest part of the atmosphere and extends to 600 kilometers (372 miles) high. Aurora and satellites occur in this layer.

• Mesosphere

• Troposhere

• Stratosphere

• Thermosphere

There are 5 identified layer of the atmoshpere. but this layer was added because of its abundant layer of electrons and ionized atoms and molecules that stretches from about 48 kilometers (30 miles) above the surface to the edge of space at about 965 km (600 mi), overlapping into the mesosphere and thermosphere. This dynamic region grows and shrinks based on solar conditions and divides further into the sub-regions: D, E and F; based on what wavelength of solar radiation is absorbed. The ionosphere is a critical link in the chain of Sun-Earth interactions. This region is what makes radio communications possible.

This is the upper limit of our atmosphere. It extends from the top of the thermosphere up to 10,000 km (6,200 mi).

• Ionosphere

• Thermosphere

• Exosphere

• Troposphere