Tools
What instrument indicates and measures temperature?
a thermometer?
Which is NOT true about a high pressure system?
-It brings storms and strong winds
-Identified with a capital H
-Can bring fair weather
-Caused by cool air sinking to the ground
False- it brings storms and strong winds
High pressure means fair weather
What kind of weather would you expect from a warm front?
What is steady rain and possible fog.
Air masses move from areas of _____________ pressure to areas of _______________ pressure
high pressure to low pressure
Cold air pushes warm humid air into the sky causing drastic changes in the atmosphere resulting in violent thunderstorms.
What device measures windspeed?
an Anemometer
What is NOT true about a low pressure system?
-It brings storms and strong winds
-Identified with a capital L
-it can bring fair weather
NOT TRUE- it brings fair weather
Low pressure systems are associated with stormy and rainy weather.
What kind of weather can you expect from a cold front?
What is high winds and storms?
Air masses are classified by what?
The surface over which they form
-Maritime forms over the ocean- wet
-Continental forms over land- dry
- Tropical forms near equator- hot
-Polar forms near poles- cold
It is a beautiful sunny day with little to no clouds in the sky. What type of pressure is causing this?
High pressure
High pressure causes HAPPY weather- cool air sinks causing few clouds and nice weather.
What device measures atmospheric pressure?
A barometer
What is it called when two air masses meet?
What is a front?
What type of storm is a rotating column of air extending from a thunderstorm to the ground.
What is a tornado?
Air masses that form over land____________________ Air masses that form over water__________________
Form over land- continental
Form over water- maritime
Describe what happens in an occluded front
A cold front pushes warm air upward, and the cold front collides with a cold front- usually results in cooler weather
What instrument can tell when a front is approaching?
A barometer- tells differences in pressure so it will change when different fronts are approaching
What type of front is identified with red half circles?
What is a warm front?
What type of storms is a Huge storm that forms over the ocean with strong spiraling winds that usually lasts for a WEEK?
What is a hurricane?
What type of air mass will bring cold, dry weather?
Continental Polar
This results from a quickly moving front, high winds, low temperatures, and high amounts of precipitation
Blizzard
- A cold front pushes warmer moist air into the atmosphere causing clouds and precipitation but the low temperatures cause the precipitation to freeze
What is happening when a barometer's reading is decreasing?
Air pressure is decreasing
What type of front is identified with blue triangles?
What is a cold front?
What is the hardest thing about predicting weather?
Weather is ALWAYS changing so it is hard to know exactly what is going to happen and where it will happen.
What type of air mass will bring hot, humid weather?
Maritime Tropical
Why are hurricanes most active from June to November?
Increased evaporation occurs in the warmer months.
Hurricanes need low pressure and lots of water vapor to form into violent storms. In the summer months, the sun causes the evaporation of the ocean to increase.