Presentation Descriptions - Wed/Thurs General Sessions, Mon/Tues ...
Mon. 5/6 or Tues. 5/7
description
Transcript of Mon. 5/6 or Tues. 5/7
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Mon. 5/6 or Tues. 5/7
• Test and INB check today.
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Why does the earth need an atmosphere?a. To protect the earth from solar windsb. To protect the earth from the sun’s radiationc. To protect the earth from the sun’s magnetic
fieldsd. All of the above
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Title Page: pg.95
Chapter 24 Weather• Title• 3 pictures/keywords• 3 colorsChapter 25 Climate• Title• 3 pictures/keywords• 3 colors
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Wed. 5/8 and Thurs. 5/9
• If you were absent last class, you missed a test and INB check.
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• Which weather tool is used to measure the average energy of the particles present?A. Barometer B. AnemometerC. ThermometerD. Psychrometer
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In: pg. 96
Weather ABC Chart• Fill in as many terms related to weather as you
can.• You need at least 10!• Please number them.
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Thru 1: Pg. 97
Movie: Lightning!• 15 facts
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Thru 2: Pg. 98-99Use pages 611-613 of the textbook
Weather Instruments
• Definition• 2 facts
Thermometer Barometer Anemometer Wind Vane Radiosonde Radar
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Out
• Make sure you ABC chart has 20 terms on it.
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Fri. 5/10 or Mon. 5/12
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• A parcel of hot, moisture-laden air rises within the atmosphere. Which occurrence is UNLIKELY to follow? The parcel of air willa. get warmer and continue to rise.b. get cooler and stop rising.c. begin to condense into a cloud.d. begin to precipitate.
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In: pg. 100
• What is the weather like today?• What is the climate of Las Vegas?• What is the difference between weather and
climate?
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Chapter 23 Weather
Pg. 101Cornell Notes
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Weather Versus Climate
• Weather is what is happening in the atmosphere over a few hours or days.
• Climate is the overall weather of an area.
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Who studies weather?
• Meteorologist-scientist who studies the weather.
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What controls the weather?
• Short answer – AIR MASSES– Body of air that is characterized by similar
temperatures and amounts of moisture at any given altitude.
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CLASSIFIED BY >>>
• WARM or COLD– Warm - tropical (forms near equator)– Cold - polar (forms near poles)
• WET or DRY– Wet – maritime (forms over bodies of water)– Dry – continental (forms over land)
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WHAT ARE THE AIR MASSES FOR THE UNITED STATES?
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COLLISIONS OF AIR MASSES
• When two air masses collide, that boundary is called a FRONT.
• FOUR TYPES– Warm Front– Cold Front– Stationary Front– Occluded Front
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NAMING FRONTS
• The type of front depends on both the direction in which the air mass is moving and the characteristics of the air mass.
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COLD FRONT• The cold air mass is
replacing the warm air mass.
• The air behind a cold front is colder and typically drier than the air ahead of it
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WARM FRONT
• A cold air mass is receding. • Favors the development of
widespread, continuous precipitation
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STATIONARY FRONT
• A front that is not moving. • Stationary fronts can also produce significant
weather and are often tied to flooding events
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OCCLUDED FRONT
• Cold fronts move faster than warm fronts.• Sometimes in a storm system the cold front
will "catch up" to the warm front. • Which ever air mass is the coldest undercuts
the other.
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Types of Fronts
Cold air and warm air stand still
Stationary Front Map Symbol
Cold Front Warm Front
Occluded Front Stationary Front
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Jet streams
• A jet stream is a narrow band of high-speed winds that blow in the upper troposphere.
• Form at the boundary between a cold air mass and a warm air mass.
• Flow along the boundary.• Push storms and other weather around.
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Thru 2
Pg. 1023 Column Vocab1. Air mass2. Continental air mass3. Maritime air mass4. Cold front5. Warm front6. Occluded front
Pg. 1037. Stationary front8. Isobar9. Isotherm10. Tornado11.Hurricane12. Meteorologist
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Out
1. What type of front is this?
2. How do you know?
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Tues. 5/14 and Wed. 5/15
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• Which statement best describes weather? Weather isa. very easy to predict, as the atmosphere is very
stable.b. an average of the atmospheric conditions in an area
over a long period of time.c. the current conditions of the atmosphere at a
certain time and place.d. an average of the atmospheric conditions in over a
short period of time.
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In: pg. 104
1. What is the abbreviation for each type of air mass?• Maritime polar• Maritime tropical• Continental polar• Continental tropical
2. What type of air mass is over Nevada?
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Thru 1: pg. 105
4 Types of Fronts• Draw and label each type of front.• Color warm air red and cold air blue
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Cold Front
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Warm Front
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Occluded Front
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Stationary Front
Stationary Front Map Symbol
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Thru 2
Pg. 106• Learning to Read a
Weather Map– Tape this in as reference.
Pg. 107• Reading a Weather Map
Worksheet.– Complete the questions
on the back using the map on the front.
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Out
• What are 5 pieces of info. a weather map gives you?
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Thurs. 5/16 and Fri. 5/17
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• Why might a meteorologist compare a new weather map to one that is a day old?a. The weather conditions yesterday can accurately
predict what type of weather will occur today.b. A comparison of the maps can help determine how
fast fronts are moving. c. Meteorologists never compare current weather
maps with day old maps. d. If an area experienced precipitation one day, it will
experience precipitation the next day.
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In: pg. 108Use the weather map at your desk to answer the following questions:1. In Las Vegas, what was the
a) Date?b) High temp?c) Low temp?d) Wind direction?e) Wind speed?f) Cloud cover?
2. On the National Map, g) What types of front(s) were moving across the country?h) Where was there precipitation?i) What kind was it?
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Thru 1: pg 109
• http://www.cbsnews.com/video/watch/?id=50134142n
Article: Submerged City• Read the article and answer the questions.
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Thru 2
Pg. 110 Pg. 111Tornado Coloring Book• Color the arrows
representing rising hot air red and arrows representing falling cold air blue.
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Out
• Is a hurricane likely to hit Las Vegas? Why or why not?
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Mon. 5/20 and Tues. 5/21
• Test and INB check next class.
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As air temperature increases the amount of water vapor that can be heldA. decreases.B. increases.C. stays the same. D. increases and then decreases.
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In: pg.112Using a double bubble map, compare and contrast
absolute and relative humidity.
Absolute humidity
Relative humidity
SimilaritiesDifferences Differences
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Humidity• Humidity is the amount of water vapor in the air. Warmer
air can hold more water vapor than colder air and usually has a higher humidity. Absolute humidity is a measure of the actual amount of water vapor in the air. For example, the very moist air of the tropics might have 18 g of water for every 1 kg of air, giving an absolute humidity of 18g/1 kg. While drier polar air may only have an absolute humidity of 1 g/kg. More often, humidity is expressed as relative humidity. This is the amount of water vapor in the air compared to the amount of water vapor the air could potentially hold. Thus, it is expressed as a percent. For example, at 25o C, air would be 100% saturated if in held 20 g of water. This would be 100% humidity(20g/20g). If this air held only 5g of water it would have 5g/20g or 25% relative humidity.
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Thru 1: Pg.113
• Movie: Tornado!– 15 facts
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• Do your study guide!
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Out
• What type of weather is a low pressure center associated with?
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Wed. 5/22 and Thurs. 5/23
• Test and INB Check today