Ch 12 and 13 review game back
What is a hydrometeor? An instrument that measures humidity back
What winds blow between 30 and 60 degrees North and south latitude What winds blow between 30 and 60 degrees North and south latitude? Prevailing Westerlies back
What would be the most likely air mass from northern Canada What would be the most likely air mass from northern Canada? Continental Polar or Continental Artic back
What would be the most dominant air mass in the south eastern united states in the summer? Maritime Tropical back
What instrument is used to measure the heights of the bases of clouds What instrument is used to measure the heights of the bases of clouds? Ceiliometer back
What is the term for the Earth’s rotation causing the winds to curve What is the term for the Earth’s rotation causing the winds to curve? Coriolis effect back
What forecast method is best for researching past weather events What forecast method is best for researching past weather events? Analogue back
Name two characteristics of high pressure? Clear skies and cooler air back
What information goes on a station model What information goes on a station model? Temp, dew point temp, wind direction, wind speed, cloud coverage, bar press, bar trend, visibility, current precipitation back
What does an anemometer measure? Wind speed back
What is the difference between weather and climate What is the difference between weather and climate? Weather is a measurement of atmospheric conditions that is currently going on and climate is the average over the long term. back
Which front moves the fastest? Cold front back
Which front would create thunderstorms? Cold front back
Which front would create a long lasting drizzle followed by warm weather? Warm front back
Which front would create freezing rain or sleet? Occluded front back
Which front would create a flood due to staying in the same place for a while? Stationary back
What is an air mass? A large volume of air that shares its characteristics with the source region. back
What are the two characteristics of an air mass? Temp and humidity back
What is air mass modification What is air mass modification? When an air mass changes after it travels over a new region. back
What is the jet stream? A narrow fast moving band of air within the Prevailing westerlies. back
What do we use to measure air pressure? Barometer back
What is the Doppler effect What is the Doppler effect? As energy is moving towards an obsever, the wavelengths compress, and as the energy moves away from an observer the wavelengths elongate. On radar, air moving towards tower is green and air moving away is red. back
What is a radiosonde? A package of weather equipment used to measure atmospheric conditions that is carried up by a balloon. back
What are two types of thunderstorms. 1 What are two types of thunderstorms? 1. Air mass (mountain and sea breeze) 2. Frontal (cold and sometimes warm) back
What are the three stages of development of a thunderstorm. 1 What are the three stages of development of a thunderstorm? 1. Cumulus Stage: Updrafts transport moisture to upper levels. 2. Mature Stage: Strong updrafts and downdrafts 3. Dissipation Stage: The storm loses energy because there are only downdrafts back
What is a super cell? Extremely powerful storms characterized by intense, rotating updrafts. back
What temperature does lightning heat the air up to? 30,000 degrees C back
Explain how thunder is created Explain how thunder is created? The heat from lightning causes a rapid expansion of air. back
How many deaths occur each year due to lightning? 90-95 back
What is a downburst? Violent downdrafts of air (confused with tornadoes) that can reach up to 160 km/h winds. back
How does hail form? Ice precipitation that forms from updrafts transporting the water to upper layers where it freezes, then falls back down collecting more moisture. If the up drafts are strong enough, then the water covered ice chunks go back up, freeze the new water and fall back down. The more this cycle repeats itself, the larger the hail gets. back
How could you tell how many times hail traveled up and down in the clouds? Count the rings when you cut it in half. back
What happens when the amount of rain fall exceeds the water sheds ability to absorb the water? Flood back
What color can you see in the sky that might warn you of a possible tornado? Green back
What is the name of the tornado scale? Fujita back
What three things is tornado scale based on What three things is tornado scale based on? Wind speed, width, and damage back
What is the name of the geographical location where most tornadoes in the US occur? Tornado Alley back
What direction do tornadoes generally travel? East by North East back
How high does the Fujita scale go to? F-5 back
What is a tropical cyclone. Large rotating low pressure system What is a tropical cyclone? Large rotating low pressure system. The energy for these storms are provided by the warm ocean water. back
Describe the air flow of a cyclone in the northern hemisphere Describe the air flow of a cyclone in the northern hemisphere? Counter clock wise, in and up. back
What is the ITCZ? The Inter Tropical Convergence Zone is where air meets in the tropics and creates wet weather. This band shifts seasonally. back
What is the “eye” of the storm What is the “eye” of the storm? The calm center of the storm where you can see blue skies. back
What makes the “eye” of the storm calm What makes the “eye” of the storm calm? The air in the center is sinking. back
What is the name of a tropical storm that reaches wind speeds over 74 Km/hr? Hurricane back
What is the name of the hurricane scale? Saffir Simpson Scale back
What is the source of energy for a hurricane? Warm ocean water back
Where do hurricanes that effect the east coast of the US originate from? The west coast of Africa back
What is a storm surge? OCCURS WHEN POWERFUL HURRICANE FORCE WINDS DRIVE A MOUND OF OCEAN WATER TOWARD SHORE, WHERE IT WASHES OVER THE LAND OFTEN CAUSING ENORMOUS DAMAGE back
What is the most dangerous aspect of a hurricane? Flooding back
What happens to a hurricane after it makes land-fall and why What happens to a hurricane after it makes land-fall and why? It gets weaker because it’s source of energy is the ocean water. back
What is a lack of moisture in a region called? Drought back
What killed a lot of French and Italian seniors over the summer What killed a lot of French and Italian seniors over the summer? Heat wave back
What is the opposite of a heat wave? Cold Wave (snap) back
What is the wind chill factor What is the wind chill factor? What the temp feels like due to the wind carrying heat away from our bodies. back