Layers of the Atmosphere

The air you breathe in from the atmosphere is made mostly of

• Oxygen

• Carbon Dioxide

• Nitrogen

• Argon

How does the ozone layer benefit living things on Earth?

• Provided drinking water in the form of rain

• Protects life from the Sun’s ultraviolet rays

• Is necessary for most living things to breathe

• Keeps Earth cool enough for life to survive

In which main layer of Earth’s atmosphere does most weather occur?

(a)  

Tags

NGSS.MS-ESS2-5

What is the measure of air molecules pressing down onto the Earth’s surface?

• Turgor Pressure

• Air pressure

• Gravity

• Primary force

Which gas makes up most (78%) of the Earth’s atmosphere?

• Carbon Dioxide

• Methane

• Nitrogen

• Oxygen

As altitude decreases,

• Air pressure increases

• Air pressure decreases

• Air temperature increases

• Air pressure remains constant

Air is a _______________

• Element

• Compound

• Mixture

• Energy

What layer of the atmosphere is the coldest?

(a)  

What is the difference between an element and compound?

• An element contain only one capital letter in it's symbol whereas a compound has two or more capital letters.

• A compound contain only one capital letter in it's symbol whereas an element has two or more capital letters.

• An element is a pure substance whereas a compound is a mixture of pure substances.

• A compound is a pure substance whereas an element is a mixture of pure substances.

This layer is the hottest layer of the atmosphere?

• Troposphere

• Stratosphere

• Mesosphere

• Thermosphere