C6.3.1 The Earth's Atmosphere

• The Earth's atmosphere protects the planet from harmful radiation
• Arrange the layers of the Earth's atmosphere in order from closest to farthest from the Earth's surface.

  1️⃣ Troposphere

  2️⃣ Stratosphere

  3️⃣ Mesosphere

  4️⃣ Thermosphere

  5️⃣ Exosphere
• The stratosphere contains the ozone layer


  True
• The thermosphere has very high temperatures
• What is the most abundant gas in the Earth's atmosphere?

  Nitrogen
• Match the atmospheric layer with its key function.

  Troposphere ↔️ Contains weather

  Stratosphere ↔️ Absorbs UV radiation

  Mesosphere ↔️ Protects from meteoroids
• What happens to temperature in the exosphere as altitude increases?

  It generally increases
• One key function of the atmosphere is maintaining a temperature suitable for life
• Arrange the layers of the atmosphere from closest to farthest from Earth

  1️⃣ Troposphere

  2️⃣ Stratosphere

  3️⃣ Mesosphere

  4️⃣ Thermosphere

  5️⃣ Exosphere
• The stratosphere contains the ozone layer, which absorbs UV radiation.
• Which layer of the atmosphere protects Earth from meteoroids?

  Mesosphere
• What happens to temperature in the thermosphere as altitude increases?

  Increases
• The atmosphere facilitates weather patterns by allowing the circulation of air, water, and other gases.
• Arrange the steps involved in the formation of weather patterns

  1️⃣ Atmospheric circulation

  2️⃣ Temperature differences

  3️⃣ Formation of clouds

  4️⃣ Precipitation
• The Earth's atmosphere protects the planet from harmful radiation
• Oxygen makes up 21% of the Earth's atmosphere.


  True
• Match the atmospheric layer with its characteristic:

  Troposphere ↔️ Contains weather; closest to Earth

  Stratosphere ↔️ Contains ozone layer; absorbs UV radiation

  Mesosphere ↔️ Protects Earth from meteoroids

  Thermosphere ↔️ Very high temperatures; absorbs extreme radiation

  Exosphere ↔️ Outermost layer; merges with space
• The exosphere is the outermost layer of the Earth's atmosphere.

  True
• What are the three key functions of the Earth's atmosphere?

  Protect, maintain temperature, weather
• What is the Earth's atmosphere defined as?

  A layer of gases
• The Earth's atmosphere maintains a temperature suitable for life


  True
• Weather occurs in the troposphere
• What does the mesosphere protect Earth from?

  Meteoroids
• The exosphere is the outermost layer of the Earth's atmosphere and gradually blends into space


  True
• The Earth's atmosphere is primarily composed of nitrogen, oxygen, argon, and other gases such as CO2
• The thermosphere absorbs extreme radiation
• What is the Earth's atmosphere?

  A layer of gases
• The Earth's atmosphere protects the planet from harmful radiation


  True
• What percentage of the atmosphere is nitrogen?

  78%
• Weather patterns occur in the troposphere

  True
• The outermost layer of the atmosphere is called the exosphere.
• What type of radiation does the atmosphere absorb to protect Earth?

  Ultraviolet
• The Earth's atmosphere is essential for the development of life


  True
• What is the Earth's atmosphere?

  A layer of gases
• What is the percentage of nitrogen in the Earth's atmosphere?

  78%
• The stratosphere contains the ozone layer, which absorbs harmful UV radiation
• What is the primary function of the mesosphere?

  Protects from meteoroids
• Arrange the layers of the Earth's atmosphere in order from closest to farthest from the Earth's surface:

  1️⃣ Troposphere

  2️⃣ Stratosphere

  3️⃣ Mesosphere

  4️⃣ Thermosphere

  5️⃣ Exosphere