#1
Which instrument is commonly used to measure atmospheric pressure?
Barometer
ExplanationBarometer measures atmospheric pressure.
#2
What unit is commonly used to measure pressure?
Pascal
ExplanationPressure is commonly measured in Pascals.
#3
Which instrument is used to measure wind speed?
Anemometer
ExplanationAn anemometer measures wind speed.
#4
What is the SI unit of atmospheric pressure?
Pascal
ExplanationPascal is the SI unit of atmospheric pressure.
#5
What instrument measures the amount of water vapor in the air?
Hygrometer
ExplanationHygrometer measures the amount of water vapor in the air.
#6
Which gas is the primary component of the Earth's atmosphere?
Nitrogen
ExplanationNitrogen is the primary component of the Earth's atmosphere.
#7
What is the approximate atmospheric pressure at sea level in standard conditions?
All of the above
ExplanationAt sea level in standard conditions, atmospheric pressure is approximately 760 mmHg, 29.92 inHg, or 1013.25 hPa.
#8
What is the principle behind the operation of a mercury barometer?
Pascal's Law
ExplanationA mercury barometer operates based on Pascal's Law.
#9
What happens to atmospheric pressure as altitude increases?
Decreases
ExplanationAtmospheric pressure decreases as altitude increases.
#10
Which device measures the atmospheric pressure and altitude for weather forecasting and outdoor activities?
Altimeter
ExplanationAltimeter measures atmospheric pressure and altitude for weather forecasting and outdoor activities.
#11
Which phenomenon causes the deviation of wind direction due to the Earth's rotation?
Coriolis effect
ExplanationCoriolis effect causes wind deviation due to the Earth's rotation.
#12
What is the name for the boundary between two air masses with different temperatures and densities?
Front
ExplanationFront is the boundary between air masses with different temperatures and densities.
#13
What is the pressure exerted by a column of mercury 76 centimeters high under standard conditions?
760 mmHg
ExplanationThe pressure exerted by a column of mercury 76 cm high under standard conditions is 760 mmHg.
#14
What is the standard atmospheric pressure in inches of mercury?
29.92 inHg
ExplanationThe standard atmospheric pressure is 29.92 inches of mercury.
#15
What is the name for a region of low atmospheric pressure with inward-spiraling winds called in the Northern Hemisphere?
Cyclone
ExplanationIn the Northern Hemisphere, a region of low atmospheric pressure with inward-spiraling winds is called a cyclone.