Weather and Climate Part 2 Flashcards
How do clouds form?
They are formed from moist air, smoke, dust particles, and lowered air pressure. Those allow air to expand and cool.
What happens to air pressure when density, temperature, water vapor, and elevation all increase.
Density relates directly to air pressure so they would both be increased. The other 3 don’t relate so air pressure is the opposite so it’s down.
Low pressure is followed by several days of rainy weather, why?
Low air pressure causes air masses move apart, the warm air rises and clouds form. Rain is related to water vapor so that would be increased and air pressure would be down.
The higher you travel the ______ the air pressure gets, the lower you travel the ______ the air pressure.
Lower & higher.
In the US, a southern coastal area has lower air pressure than an inland area farther north, why?
Areas in the south are warmer than the north, meaning the air pressure is low. Air masses are spread apart. Being on the coast increases water vapor decreasing air pressure.
Why does it take longer to fly from Milwaukee to Los Angeles than it does to fly in the opposite direction? (Jet streams)
It takes longer because you are going against the jet stream going there. Coming back pilots can take advantage of it to increase their speed.
What type of weather would you expect for the jet stream to bring if it is flowing down from Canada?
It would bring cold weather that is dry.
What type of weather would you expect for the jet stream to bring if it is flowing up from the Gulf of Mexico?
Warm weather that is humid(moist)
What are three things that affect temperature?
Latitude, elevation, and ocean currents.
What are two things that affect precipitation?
Mountain ranges and prevailing winds.
What causes climate?
Temperature and precipitation.
Less latitude = ______ temp.
_____ latitude = lower temp.
Higher and more.
Higher elevation = more spread out molecules. So the air is less?
Dense
Where are warm water currents from?
Equator
What are prevailing winds?
Winds that blow from one direction over certain points, makes more precipitation.