Chapter 1: Composition of the Atmosphere
Generally, humidity is highest
Around the Equator
The layer of gases above Earth's surface is called the ________.
Atmosphere
Which element does air contain the most of?
Nitrogen
Nitrogen is the largest component of the atmosphere by volume.
TRUE
The Earth's atmosphere contains 0.93 percent of argon gas.
TRUE
What do particulates in the atmosphere do?
They nucleate water vapor to form clouds
What do greenhouse gases in the atmosphere do?
They trap heat
Atmospheric oxygen is extremely important for life on Earth.
True
Solid particles in the air, such as dust, salt, or ash are known as particulates.
True
The atmosphere contains minor amounts of gases like ______.
water vapor carbon dioxide argon
What percent of the atmosphere is composed of neon?
0.0018
Dry air contains roughly _____ percent nitrogen by volume.
78.09
Important natural greenhouse gases include _____.
All of the above
What makes up 99% of the atmosphere?
Both A & B
Which gas is important for the process of photosynthesis?
Carbon dioxide
Which of the following gases contributes to the greenhouse effect?
Carbon dioxide
Which one among the following is a greenhouse gas?
Carbon dioxide
CFCs are not greenhouse gases.
FALSE
Dry air contains 70 percent of oxygen by volume.
FALSE
Nitrogen and oxygen together make up 79% of the planet's atmosphere.
FALSE
The life-supporting gases such as oxygen, carbon dioxide, and nitrogen are chiefly concentrated in the exosphere.
FALSE
The proportion of gases is the same throughout the atmosphere.
FALSE
Only a few animals need oxygen to survive.
False
Complete the sentence using the word droplets, vapor, or condensation.
Humidity is a measure of the percent of water vapor in the air.
Which gas exists in the highest concentration in the Earth's atmosphere?
Nitrogen
Which gas is most abundant in the Earth's atmosphere?
Nitrogen
The atmosphere is primarily made up of
Nitrogen and Oxygen
______ and _____ are the two major atmospheric gases.
Nitrogen and Oxygen
Which of the following is the second most abundant gas in the atmosphere?
Oxygen
There is a greater concentration of ozone molecules in the _____ layer than in other portions of the atmosphere.
Ozone
Complete the sentence using one of the following words: Ozone, Particulates, or CFCs.
Particulates is/are fragments of dust, soil, salt, smoke and ash, upon which water vapor condenses to form clouds.
The Earth's atmosphere is made up of gases like carbon dioxide, nitrogen, and oxygen.
True
Warmer air can hold more moisture than colder air.
True
Humidity is the measure of the amount of ___________ in the air.
Water Vapor
Which of the following gases is NOT a significant component of the planet's atmosphere?
neon