Intro to Atmosphere and Layers

The Earth's atmosphere is made up of

• ice

• maple syrup

• air

• wax

The layer of the atmosphere that is closest to the Earth's surface is the

• stratosphere

• mesophere

• troposphere

• exosphere

What gas makes up about 21% of atmospheric gases?

• oxygen

• nitrogen

• carbon dioxide

• water vapor

What gas makes up about 78% of atmospheric gases?

• carbon dioxide

• oxygen

• nitrogen

• water vapor

In what layer do meteors burn up?

• Troposphere

• Stratosphere

• Mesosophere

• Thermosphere

What is the job of the ozone layer?

• To keep plants alive.

• To make the Earth brighter.

• To protect the Earth from ultraviolet radiation.

• To make clouds.

What organism used photosynthesis to generate oxygen for early Earth's atmosphere?

• Humans

• Plants

• Cyanobacteria

• Worms

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

What is the hottest layer of the atmosphere?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere

The exosphere transitions into _________________________.

• Mars

• the thermosphere

• outer space

• the troposphere

Where is the ozone located, in what layer?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere