Air Pressure and Station Models in Earth Science

This video tutorial covers Unit 5, focusing on air pressure and station models. It begins with an introduction to six essential weather instruments, including thermometers and barometers. The tutorial explains the relationships between air pressure, altitude, temperature, and humidity, highlighting inverse relationships. It also covers pressure conversion between millibars and inches of mercury. The characteristics of high and low pressure systems are discussed, including their effects on weather patterns. The video explains how to interpret station models and concludes with practice questions to reinforce learning.

Which instrument is used to measure wind speed?

• Thermometer

• Rain Gauge

• Anemometer

• Barometer

What happens to air pressure as altitude increases?

• It remains the same

• It decreases

• It increases

• It fluctuates

How does temperature affect atmospheric pressure?

• As temperature increases, pressure increases

• Temperature has no effect on pressure

• As temperature increases, pressure decreases

• As temperature decreases, pressure increases

What is the relationship between humidity and air pressure?

• Humidity has no effect on pressure

• As humidity increases, pressure increases

• As humidity increases, pressure decreases

• As humidity decreases, pressure increases

Tags

NGSS.MS-ESS2-5

What is the pressure at sea level in millibars?

• 1000 millibars

• 1013.2 millibars

• 29.92 millibars

• 30.00 millibars

Which direction does high pressure rotate?

• Counterclockwise and outward

• Clockwise and outward

• Clockwise and inward

• Counterclockwise and inward

Tags

NGSS.MS-ESS2-6

What does the 'L' in low pressure stand for?

• Light air

• Lousy weather

• Low temperature

• Both A and B

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

In a station model, what does a whole feather represent in terms of wind speed?

• 10 knots

• 15 knots

• 5 knots

• 20 knots

How do you convert a station model pressure of 196 to actual pressure?

• Add 10 in front and place a decimal after the first digit

• Add 9 in front and place a decimal between the last two digits

• Add 10 in front and place a decimal between the last two digits

• Add 9 in front and place a decimal after the first digit

Which condition is most likely to result in clear skies?

• Dew point close to air temperature

• Increasing wind speed

• High pressure

• High humidity