Layers of Earth's Atmosphere and Their Role in Supporting Life

The video tutorial explores Earth's atmosphere, which consists of five main layers: troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Each layer has unique characteristics and plays a crucial role in supporting life on Earth. The troposphere is where weather occurs, the stratosphere contains the ozone layer, the mesosphere is where meteors burn up, the thermosphere absorbs high-energy radiation, and the exosphere merges into space. The video also highlights Earth's unique features, such as its distance from the sun, water coverage, and ability to support life.

What is the Earth's distance from the Sun known as?

• Astronomical Unit

• Light Year

• Kilometer

• Parsec

Which layer of the atmosphere do humans inhabit?

• Stratosphere

• Thermosphere

• Troposphere

• Mesosphere

What percentage of the Earth's water vapor is found in the troposphere?

• 25%

• 50%

• 75%

• 99%

Which layer contains the ozone layer?

• Exosphere

• Mesosphere

• Stratosphere

• Troposphere

Why do commercial jets prefer to fly in the lower stratosphere?

• More scenic views

• Warmer temperatures

• Less turbulence

• Higher oxygen levels

In which layer do most meteors burn up?

• Mesosphere

• Stratosphere

• Thermosphere

• Troposphere

What is the coldest temperature found in the mesosphere?

• -90°C

• -130°C

• -50°C

• -200°C

Which layer absorbs high-energy X-rays and UV radiation?

• Troposphere

• Mesosphere

• Stratosphere

• Thermosphere

What is the primary composition of the exosphere?

• Carbon Dioxide and Methane

• Argon and Neon

• Hydrogen and Helium

• Oxygen and Nitrogen

At what altitude does the exosphere begin?

• 10,000 km

• 50 km

• 85 km

• 700 km