Wind and the Atmosphere

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

As the dewpoint temperature of a sample of air decreases, the amount of moisture in that sample of air

• decreases

• increases

• remains the same

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

The dewpoint changes most directly as a result of changes in the atmosphere's

• pressure

• wind direction

• convection currents

• water vapor content

Tags

NGSS.MS-ESS2-4

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.

Tags

NGSS.MS-ESS2-5

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%

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

As warm, moist air moves into a region, barometric pressure readings in the region will generally

• decrease

• increase

• remain the same

Tags

NGSS.MS-ESS2-5

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

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6