Earth's Sphere

What are the primary gases found in the Earth's atmosphere?

• methane and krypton

• hydrogen and argon

• carbon dioxide and helium

• nitrogen and oxygen

What is the percentage of nitrogen in the Earth's atmosphere?

• 50%

• 90%

• 78%

• 30%

What is the percentage of oxygen in the Earth's atmosphere?

• 10%

• 21%

• 30%

• 50%

Name one of the trace gases found in the Earth's atmosphere.

• Methane

• Nitrogen

• Carbon dioxide

• Oxygen

What is the role of the ozone layer in the Earth's atmosphere?

• Traps greenhouse gases

• Creates acid rain

• Reflects UV radiation

• Absorbs UV radiation

How does the atmosphere protect the Earth from harmful radiation?

• Reflecting the harmful radiation back into space

• Absorbing and scattering the incoming solar radiation

• Creating a protective force field around the Earth

• Filtering out the harmful radiation using special particles

What is the importance of carbon dioxide in the Earth's atmosphere?

• It has no impact on the Earth's temperature.

• It helps to cool down the planet and prevent overheating.

• It helps to trap heat and keep the planet warm enough to sustain life.

• It is only important for plant photosynthesis.

Explain the greenhouse effect and its impact on the Earth's atmosphere.

• The greenhouse effect only affects certain regions of the Earth, not the entire atmosphere.

• The greenhouse effect has no impact on the Earth's atmosphere.

• The greenhouse effect cools down the Earth's atmosphere, leading to an ice age.

• The greenhouse effect traps heat in the Earth's atmosphere, leading to global warming and climate change.

What are the layers of the Earth's atmosphere and their characteristics?

• Oceanosphere, Landosphere, Skyosphere, Spacesphere, Universesphere

• Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere

• Hotosphere, Coldosphere, Wetosphere, Dryosphere, Windosphere

• Cloudosphere, Rainosphere, Snowosphere, Hailosphere, Thunderosphere

How does the composition of the Earth's atmosphere support life on the planet?

• It generates a magnetic field to protect from harmful solar radiation

• It creates a barrier to prevent the escape of essential gases

• It provides a solid surface for living organisms to thrive

• It provides necessary gases for respiration and photosynthesis, regulates temperature, and protects from harmful solar radiation.