G6 Social Studies Revision 1

What is the blanket of gases surrounding Earth called?

• Thermosphere

• Atmosphere

• Mesosphere

• Exosphere

Where is the imaginary boundary between Earth's atmosphere and outer space?

• Ionosphere

• Troposphere

• Karman Line

• Exosphere

Which layer of the atmosphere is the highest?

• Stratosphere

• Exosphere

• Thermosphere

• Mesosphere

In which layer do space shuttles orbit?

• Exosphere

• Thermosphere

• Stratosphere

• Mesosphere

Which layer of the atmosphere is the coldest?

• Exosphere

• Thermosphere

• Mesosphere

• Stratosphere

In which layer do jet aircrafts and weather balloons fly?

• Exosphere

• Thermosphere

• Stratosphere

• Mesosphere

Which layer of the atmosphere is closest to Earth?

• Stratosphere

• Mesosphere

• Troposphere

• Exosphere

What is the layer that contain the ozone layer?

• Thermosphere

• Exosphere

• Mantle

• stratosphere

What does the ozone layer absorb from the sun?

• Harmful ultraviolet radiation

• Infrared radiation

• Visible light

• Microwaves

What percentage of Earth's atmosphere is nitrogen?

• 78%

• 21%

• 0.9%

• 0.03%