23 Questions
What is the purpose of a barometer?
To measure atmospheric pressure
How is Torricelli's barometer constructed?
By filling a glass tube with liquid mercury and inverting it in a dish of mercury
What keeps the mercury in the tube of the barometer?
Pressure exerted by the atmospheric gases
How does atmospheric pressure vary with altitude?
It decreases with increasing altitude
Which of the following is a property of gases?
Gases mix completely with any other gas
What happens to the can as it cools?
The can collapses
What fills the can when it is sealed and cooled?
Liquid water
What is the role of the water vapor in the can experiment?
It increases the pressure inside the can
What causes atmospheric pressure to vary?
Changing weather conditions
What happens to atmospheric pressure when a 'low' is approaching?
It decreases
What is the height of the column of mercury in Torricelli's barometer at sea level?
mm
What is the height of the column of mercury in Torricelli's barometer at an elevation of feet?
mm
What is the main cause of atmospheric pressure?
Gravity
What does a decrease in atmospheric pressure often indicate?
Approaching storm
Which of the following is a property of gases?
Gases uniformly fill any container
What causes the can to collapse as it cools?
The air pressure pushing against the can
What happens when the water vapor in the can condenses?
The gas pressure inside the can decreases
What happens to the air pressure inside the can when it is sealed and cooled?
It decreases
What is the purpose of the experiment shown in Figure 8.1?
To show the effect of atmospheric pressure
What causes a balloon to become firm when it is blown up with air?
The pressure exerted by the air inside
What is the most obvious property of a gas mentioned in the text?
Gases exert pressure on their surroundings
What fills the can when it is sealed and cooled?
Liquid water
What is the atmospheric pressure exerted by?
The gases in the atmosphere
Test your knowledge of pressure in gases with this quiz! Learn about the properties of gases, their ability to uniformly fill containers and exert pressure on their surroundings. Explore the concept of compression and the mixing of gases.
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