Earth's Atmosphere: Layers, Composition, and Importance for Life

Question 1

Which layer of the Earth's atmosphere is right above the ground, where we live?

Accepted Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Answer

Thermosphere

Question 2

What is the most common gas in the air we breathe?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Carbon dioxide

Answer

Argon

Question 3

What is the name of the boundary between the troposphere and the stratosphere?

Accepted Answer

Tropopause

Answer

Stratopause

Answer

Mesopause

Answer

Thermopause

Question 4

What is the ozone layer good for?

Accepted Answer

It protects us from the sun's harmful rays.

Answer

It helps plants grow.

Answer

It keeps the air clean.

Answer

It makes the sky blue.

Question 5

What activity can make the air around Earth dirty?

Accepted Answer

Burning gas in cars

Answer

Planting trees

Answer

Riding a bike to school

Answer

Recycling paper

Question 6

What is the closest layer of the atmosphere to Earth's surface called?

Accepted Answer

Troposphere

Answer

Mesosphere

Answer

Stratosphere

Answer

Thermosphere

Question 7

Which of these is NOT a job of the atmosphere?

Accepted Answer

Makes storms

Answer

Protects us from harmful radiation

Answer

Gives us gases to breathe

Answer

Helps control temperature

Question 8

Which gas helps shield Earth from the sun's harmful rays?

Accepted Answer

Ozone

Answer

Oxygen

Answer

Nitrogen

Answer

Carbon dioxide

Question 9

Which of these is a natural event that happens in the atmosphere?

Accepted Answer

Tornado

Answer

Plastic bag

Answer

Car exhaust

Answer

Smoke from a campfire

Question 10

Which scientist is famous for his experiments on air pressure?

Accepted Answer

Evangelista Torricelli

Answer

Albert Einstein

Answer

Isaac Newton

Answer

Galileo Galilei

Question 11

How does air pressure change as you go higher in the atmosphere?

Accepted Answer

Air pressure decreases with altitude

Answer

Air pressure increases with altitude

Answer

Air pressure stays the same at all altitudes

Answer

Air pressure changes randomly with altitude

Question 12

Which gas makes up the largest part of the air we breathe?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Carbon dioxide

Answer

Helium

Question 13

Which layer forms the outermost part of Earth's atmosphere?

Accepted Answer

Thermosphere

Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Question 14

Which gas constitutes the largest percentage of Earth's atmospheric composition?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Carbon dioxide

Answer

Argon

Question 15

In which atmospheric layer do airplanes typically operate?

Accepted Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Answer

Thermosphere

Question 16

What phenomenon causes the sky to appear blue?

Accepted Answer

Scattering of sunlight by nitrogen particles

Answer

Reflection of sunlight from clouds

Answer

Absorption of ultraviolet radiation by ozone

Answer

Refraction of sunlight by Earth's surface

Question 17

What gas is primarily concentrated within the stratosphere?

Accepted Answer

Ozone

Answer

Nitrogen

Answer

Oxygen

Answer

Carbon dioxide

Question 18

Which atmospheric layer is characterized by extremely high temperatures?

Accepted Answer

Thermosphere

Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Question 19

Which layer of the Earth's atmosphere has the greatest impact on the weather we experience, such as rain and wind?

Accepted Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Answer

Thermosphere

Question 20

Which gas is the most abundant in Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Helium

Answer

Carbon dioxide

Question 21

Which layer of the atmosphere protects us from the Sun's harmful rays?

Accepted Answer

Stratosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Question 22

Which of these is NOT a way that the atmosphere helps us?

Accepted Answer

Keeps us from flying

Answer

Provides oxygen for breathing

Answer

Protects us from the Sun's rays

Answer

Helps regulate Earth's temperature

Question 23

Which of these activities can release harmful gases into the atmosphere?

Accepted Answer

Driving a car

Answer

Recycling paper

Answer

Planting trees

Answer

Walking

Question 24

Which part of the Earth has water but is not a layer of the atmosphere?

Accepted Answer

Hydrosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Exosphere

Question 25

Which of these is NOT a layer of the Earth's atmosphere?

Accepted Answer

Lithosphere

Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Question 26

Which layer of the atmosphere shields us from the Sun's dangerous rays?

Accepted Answer

Stratosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Question 27

In which layer of the Earth's atmosphere do we live?

Accepted Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Answer

Thermosphere

Question 28

Which layer of the atmosphere is closest to the ground?

Accepted Answer

Troposphere

Answer

Mesosphere

Answer

Stratosphere

Answer

Exosphere

Question 29

Which gas makes up most of the Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Carbon dioxide

Answer

Helium

Question 30

Where in the atmosphere can you find the ozone layer?

Accepted Answer

Stratosphere

Answer

Mesosphere

Answer

Troposphere

Answer

Exosphere

Question 31

Which activity can pollute the atmosphere?

Accepted Answer

Driving a car

Answer

Planting trees

Answer

Using renewable energy

Answer

Recycling paper

Question 32

What is the name of the tool scientists use to measure air pressure?

Accepted Answer

Barometer

Answer

Thermometer

Answer

Anemometer

Answer

Hydrometer

Question 33

How does the atmosphere affect the Earth's temperature?

Accepted Answer

It traps heat from the sun

Answer

It reflects heat away from the Earth

Answer

It has no effect on temperature

Answer

It makes the Earth colder

Question 34

Which layer of the atmosphere is the coldest?

Accepted Answer

Mesosphere

Answer

Troposphere

Answer

Stratosphere

Answer

Exosphere

Question 35

Which layer of Earth's atmosphere is closest to the ground?

Accepted Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Answer

Thermosphere

Question 36

Which gas makes up the most of Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Carbon dioxide

Answer

Helium

Question 37

Which layer of the atmosphere protects us from the sun's harmful rays?

Accepted Answer

Stratosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Question 38

Which of these is NOT a benefit of Earth's atmosphere?

Accepted Answer

Makes flight impossible

Answer

Provides oxygen for breathing

Answer

Protects from harmful radiation

Answer

Regulates temperature

Question 39

Which layer of the atmosphere is the coldest?

Accepted Answer

Mesosphere

Answer

Troposphere

Answer

Stratosphere

Answer

Thermosphere

Question 40

What tool is used to measure air pressure?

Accepted Answer

Barometer

Answer

Thermometer

Answer

Anemometer

Answer

Hygrometer

Question 41

Which activity releases carbon dioxide into the atmosphere?

Accepted Answer

Driving a car

Answer

Planting trees

Answer

Recycling paper

Answer

Composting food

Question 42

The Earth's atmosphere does NOT have a layer called:

Accepted Answer

Lithosphere

Answer

Troposphere

Answer

Stratosphere

Answer

Thermosphere

Question 43

Which layer of the Earth's atmosphere is the hottest?

Accepted Answer

Thermosphere

Answer

Troposphere

Answer

Stratosphere

Answer

Mesosphere

Question 44

Which of these actions can damage the Earth's atmosphere??

Accepted Answer

Burning fossil fuels

Answer

Planting trees

Answer

Recycling paper

Answer

Using public transportation

Question 45

What is the process through which plants use carbon dioxide from the atmosphere?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Combustion

Answer

Evaporation

Question 46

Which layer of the Earth's atmosphere is the farthest from its surface?

Accepted Answer

Thermosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Stratosphere

Question 47

Which gas makes up the largest part of Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Oxygen

Answer

Carbon dioxide

Question 48

Which layer of the atmosphere contains the ozone layer that protects us from harmful sun rays?

Accepted Answer

Stratosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Question 49

What pulls objects towards the Earth's surface?

Accepted Answer

Gravity

Answer

Magnetism

Answer

Inertia

Answer

Friction

Question 50

What is a major cause of air pollution?

Accepted Answer

Burning fossil fuels

Answer

Deforestation

Answer

Volcanic eruptions

Answer

Natural disasters

Question 51

What can you do to help reduce air pollution?

Accepted Answer

Use public transportation

Answer

Leave appliances on

Answer

Burn more fossil fuels

Answer

Cut down trees

Question 52

What is the name of the international agreement that aims to reduce greenhouse gas emissions?

Accepted Answer

Paris Agreement

Answer

Stockholm Convention

Answer

Kyoto Protocol

Answer

Montreal Protocol