WorksheetsAir/Atmosphere/Wind Practice
Total questions: 20
Worksheet time: 34mins
Students wish to study the effect of elevation above sea level on air temperature and air pressure. They plan to hike in the Adirondack Mountains from Heart Lake, elevation 2,179 feet, to the peak of Mt. Marcy, elevation 5,344 feet. Which instruments should they use to collect their data?
anemometer and psychrometer
anemometer and barometer
thermometer and psychrometer
thermometer and barometer
A temperature of 104°F is approximately equal to
220°C
214°C
43°C
40°C
What is the average air pressure exerted by Earth's atmosphere at sea level, expressed in millibars and inches of mercury?
1013.25 mb and 29.92 in of Hg
29.92 mb and 1013.25 in of Hg
1012.65 mb and 29.91 in of Hg
29.91 mb and 1012.65 in of Hg
Which weather variable generally decreases when wind speed is increasing, clouds are thickening, and visibility drops?
relative humidity
dewpoint
precipitation
air pressure
Which weather variable is measured by a barometer?
dewpoint
wind speed
air pressure
visibility
Air pressure is usually highest when the air is
cool and humid
cool and dry
warm and humid
warm and dry
A barometric pressure of 1021.0 millibars is equal to how many inches of mercury?
29.88
30.15
30.25
30.50
Earth's surface winds generally blow from regions of higher
air temperature toward regions of lower air temperature
air pressure toward regions of lower air pressure
latitudes toward regions of lower latitudes
elevations toward regions of lower elevations
Which weather condition most directly determines wind speeds at Earth's surface?
visibility changes
amount of cloud cover
air-pressure gradient
dewpoint differences
Wind is caused mainly by air-pressure differences that result from
uneven heating of Earth's atmosphere
absorption of ultraviolet radiation by Earth's landmasses
radiation of heat from Earth's landmasses to water bodies
rotation of Earth on its axis
As warm, moist air moves into a region, barometric pressure readings in the region will generally
decrease
increase
remain the same
A psychrometer is used to determine which weather variables?
wind speed and wind direction
percentage of cloud cover and cloud height
air pressure and air temperature
relative humidity and dewpoint
What is the relative humidity when the dry-bulb temperature is 16°C and the wet-bulb temperature is 14°C?
90%
80%
14%
13%
An observer measured the air temperature and the dewpoint and found the difference between them to be 12°C. One hour later, the difference between the air temperature and the dewpoint was found to be 4°C. Which statement best describes the changes that were occurring?
The relative humidity was decreasing and the chance of precipitation was decreasing.
The relative humidity was decreasing and the chance of precipitation was increasing.
The relative humidity was increasing and the chance of precipitation was decreasing.
The relative humidity was increasing and the chance of precipitation was increasing.
The dewpoint changes most directly as a result of changes in the atmosphere's
pressure
wind direction
convection currents
water vapor content
As the dewpoint temperature of a sample of air decreases, the amount of moisture in that sample of air
decreases
increases
remains the same
As altitude increases, air pressure...
Increases
Decreases
Remains the same
Air pressure is usually highest when the air is...
cool and humid
cool and dry
warm and humid
warm and dry
Which atmospheric conditions are necessary for condensation?
saturated air and dewpoint temperature much lower than air temperature
unsaturated air and dewpoint temperature much higher than air temperature
saturated air and equal dewpoint and air temperatures
unsaturated air and equal dewpoint and air temperatures
In which two temperature zones of the atmosphere does the temperature increase with increasing altitude?
troposphere and stratosphere
troposphere and mesosphere
stratosphere and thermosphere
mesosphere and thermosphere
