General Unit Knowledge
The atmosphere is mainly made up of what two gases?
Surprise! 300 points! Here is the location of the warm and cold air mass in a stationary front.
Opposite side of the symbols
What type of clouds are puffy/lumpy and created around 2000 m in the troposphere?
Cumulus Clouds
This is the defintion of dew point.
The temperature air needs cooled to in order to reach 100% relative humidity.
A weather balloon collects data within the troposphere; as it rises what happens to the air pressure?
The air pressure decreases
What does relative humidity measure?
The amount of water vapor in the air
The layer of the atmosphere that 'all weather occurs'
The Troposphere
What occurs when cold, dense air displaces warm air, and forces the warm air up into the atmosphere at a steep slope?
Cold Front
(Intense precipitation and thunderstorms)
What type of heat transfer is between objects in contact by the collision between particles in the objects?
Conduction
Isobars
Why does the Coriolis Effect occur?
Earth's rotation on its axis
How does air pressure change as you move upward through the atmosphere, and why does this happen?
Air pressure decreases with altitude. This happens because the higher you go, the fewer air molecules are above you. With less weight of air pressing down, the pressure becomes lower.
What is needed for clouds to form within the troposphere?
Condensation Nuclei
What type of heat transfer is by the movement of heated material from one place to another?
Convection
When Isobars are closer together on a map, what is that telling about the weather in the area?
The wind speed is higher when isobars are closer together. (Faster rate of change for air pressure)
How does wind move in High Pressure Areas in the Northern Hemisphere?
Air moves Clockwise and Outward
In high pressure areas in the Northern Hemisphere; what are the weather conditions?
Clear Skies and Sunny; with Low Humidity
A Continental Tropical air mass is traveling north from Mexico into the Midwest. What type of air/weather is it bringing to the area?
Hot, dry Weather
What type of heat transfer is by electromagnetic waves?
Radiation
You take a sealed, empty plastic water bottle and screw the cap on tightly while at the top of a mountain. Later, when you bring it down to sea level, you notice that the bottle has become crushed inward.
Why does this happen?
At the top of the mountain, the air pressure is lower, so the air inside the bottle is at a lower pressure when sealed. When the bottle is brought down to sea level, the external air pressure is much higher. Because the pressure inside the sealed bottle is lower than the pressure outside, the higher external air pressure pushes inward on the bottle, crushing it. This demonstrates how air pressure changes with altitude and how differences in pressure can create force.
If the air was holding 10 grams of water at 25 C , but was capable of holding 22 grams of water, what is the relative humidity?
45.45%
What is the term that describes the following process:
Rising air cools and expands due to lower pressure at high areas
Adiabatic Cooling
What is the definition of the following process;
When a warmer body of air passes across a colder surface (creating fog in some cases)
Advective Cooling
A metal spoon is placed in a cup of hot tea. After a few minutes, the handle of the spoon becomes warm. At the same time, you notice that the air above the cup feels warmer, and the ceramic cup itself is warm to the touch.
Identify which types of heat transfer are occurring in each of the following cases and explain why:
The spoon handle becoming warm
The air above the cup feeling warmer
The ceramic cup becoming warm
1. Conduction
2. Convection
3. Conduction
What is the standard value of Air Pressure at sea level. (Remember your Units!)
14.7 pounds per square inch
OR
101,325 Newtons of force per square inch