Layers/Composition
In which layer of the atmosphere does weather occur?
Troposphere
Fill in the blank to complete the sentence correctly: "Wind is the movement of air from ______________________________________________"
"Wind is the movement of air from High to Low Pressure."
What kind of weather is associated with High Pressure Systems?
Clear and calm (Sunny)
What is the cloud cover and wind direction for the station model shown?
60% and Northwest
An area where 2 are masses meet and do not mix. They separate areas of High and Low pressure.
Front
Name the 2 gases that make up the majority of our atmosphere in order (most abundant followed by 2nd most abundant).
Nitrogen and Oxygen
Which 2 weather components can be measured using a psychrometer?
Relative Humidity and Dew Point
More violent thunderstorms (and possibly even tornadoes) typically form along which type of front?
Cold
Give the cloud cover, wind direction, and the weather for the station model shown
Cloud cover = 90% Wind direction = Southeast Weather = Hail
Describe the properties of a Maritime Tropical (mT) air mass and give an example of where one might form that could affect the United States.
Warm and Humid
ex: Gulf of Mexico or South Atlantic Ocean
USE your ESRT: List what happens to temperature in each of the layers of the atmosphere as altitude increases.
Troposphere: decreases Stratosphere: increases Mesosphere: decreases Thermosphere: increases
Which instrument is used to measure air pressure and which one is used to measure wind speed?
air pressure: barometer wind speed: anemometer
How does air in a Low Pressure System move in the Northern Hemisphere?
The air rises and rotates counterclockwise
Here are two station models from consecutive days… 1. What type of front likely passed through the area? and 2. Justify your reasoning
1. Warm Front 2. It got warmer and more humid
On a typical sunny day, when will the highest temperatures usually be recorded?
mid to late afternoon (3-5 pm)
What happens to air pressure from the troposphere up through the thermosphere?
The pressure decreases as altitude increases.
What is the Relative Humidity if the dry-bulb temperature is 24 degrees C and the wet-bulb is 16 degrees C?
Relative Humidity = 42% Dew Point = 10 degrees C
What would you notice about the weather AFTER a warm front passes?
It would be warmer and more humid
Here are 2 models from 2 consecutive days…. 1. What type of front moved through the area? and 2. What pressure system is in affect on the 2nd day?
1. Cold 2. High
List 3 things that are true of Sea Breezes.
They occur during the day.
The warmer air is over the land.
The cooler air is over the sea.
High pressure is over the sea.
Low pressure is over the land.
Wind blows from sea to land.
This layer contains ozone. Why is this chemical so important?
Stratosphere. It protects us from Ultraviolet (UV) radiation
Find the Relative Humidity and Dew Point if the dry-bulb is 18 degrees C and the wet-bulb is 15 degrees C.
Relative humidity = 72% Dew point = 13 degrees C
Which wind belt is the United States in? How does it impact how weather moves across the country?
Prevailing westerlies
-make the weather move from West to East
Where is the weather on this weather map likely cloudy/rainy? Indicate where there are calm, clear skies
The cloudy rainy weather is along the fronts and where the LOW pressure is, and the clear, calm weather is behind the cold front where the H is.
What two factors are responsible for creating global wind patterns?
Earth's rotation (causing the Coriolis effect)
and unequal heating of Earth's surface.