The Atmosphere

What makes up the atmosphere?

• water and oxygen

• liquids that are important to living things on Earth.

• Ozone

• Gases that are important to living things on Earth.

What percentage of Nitrogen and Oxygen are in the atmosphere?

• 5% Nitrogen and 95% Oxygen

• 78% Nitrogen and 21% Oxygen

• 21% Nitrogen and 78% Oxygen

• There is no Nitrogen in the atmosphere. 100% Oxygen.

What works as a shield of oxygen for Earth?

(a)  

In how many layers have scientists organized our atmosphere? (type the number)

(a)  

What is another way to describe distance from Earth?

(a)  

Which layer is the closest to Earth?

• mesosphere

• exosphere

• stratosphere

• troposphere

Which layer is the farthest from Earth?

• mesosphere

• exosphere

• troposphere

• thermosphere

Choose the list that orders the layers from closest to farthest from Earth.

• Troposphere, Stratosphere, Mesosphere, Thermosphere, Exosphere

• Stratosphere, Mesosphere, Troposphere,

  Exosphere, Thermosphere

• Exosphere, Thermosphere, Mesosphere, Stratosphere, Troposphere

• Thermosphere, Stratosphere, Mesosphere, Troposphere, Exosphere

In which layer do meteors burn up?

(a)  

In which layer do satellites orbit the Earth?

(a)