
Air Density and Composition Concepts
Interactive Video
•
Physics
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the two main factors discussed in the video that explain why moist air is less dense than dry air?
Avogadro's principle and molecular weight of water vapor
Temperature and pressure
Wind speed and direction
Humidity and altitude
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to Avogadro's principle, what remains constant in parcels of air with the same temperature, pressure, and volume?
The humidity level
The density of the air
The number of molecules
The weight of the air
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molecular weight of nitrogen in the atmosphere when it comes in pairs?
14
28
16
32
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the molecular weight of water vapor compare to that of nitrogen and oxygen in the atmosphere?
They are the same
Water vapor is lighter
Water vapor is heavier
It depends on the temperature
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percentage of dry air is composed of nitrogen?
21%
30%
70%
50%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molecular weight of water vapor (H2O)?
32
18
28
16
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molecular weight of oxygen in the atmosphere when it comes in pairs?
18
32
28
16
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