Download Fronts

Catalyst:
1. Mouths are quiet.
2.Get your folder out and begin the quick
review section of your notes.
3.Raise your hand if you need something.
Quick Review
The following diagram
shows the dominant trait
of brown fur in deer, B.
The recessive allele will
give deer with white fur.
1. How many total males are
shown?
3
2. How many females will have
brown fur?
2
3. How many males will have
white fur?
0
Quick Review
The following diagram
shows the dominant
trait of brown fur in
deer, B. The recessive
allele will give deer
with white fur.
B
b
B
BB
Bb
B
BB
Bb
4. What is the chance that
the offspring of individuals
3 and 4 in Generation II will
have brown fur?
100%
5. What is the chance that
the offspring will be carriers
for the white fur trait?
50%
Weather
LESSON 8.5 – FRONTS
I can differentiate between cold fronts, warm fronts, and stationary
fronts. I can predict the weather in a region based on these fronts. (4c)
1. A large amount of air
with about the same
temperature and
humidity = air mass
a. Covers thousands
of square miles.
b. Can be warm or
cool and wet or dry.
Depends on where it
comes from.
I can differentiate between cold fronts, warm fronts, and stationary
fronts. I can predict the weather in a region based on these fronts. (4c)
c. Warm air masses hold
more water vapor
than cold air.
1) Your skin is drier in
the winter because
the air is drier.
I can differentiate between cold fronts, warm fronts, and stationary
fronts. I can predict the weather in a region based on these fronts. (4c)
2. When two air masses with different
characteristics meet =
front
a. The type depends on which mass is
moving more quickly and its
characteristics.
b. Most changes in weather occur at
fronts.
3. We will discuss three different types
of fronts: cold, warm, stationary
fronts
a. A fourth, called an occluded front,
is less commonly seen.
I can differentiate between cold fronts, warm fronts, and stationary
fronts. I can predict the weather in a region based on these fronts. (4c)
4. Cold Front
a. A quickly moving cold air mass
pushes under a warm air mass
causing it to rise quickly.
b. When warm air rises, it cools and
water vapor condenses, forming
large clouds.
Heavy rain, thunderstorms, and
snowstorms happen at cold fronts.
c. As a cold front passes, the
temperature decreases and weather
clears.
I can differentiate between cold fronts, warm fronts, and stationary
fronts. I can predict the weather in a region based on these fronts. (4c)
5. Warm Front
a. A quickly moving warm air
moves over a colder air mass
and begins to rise.
b. The warm air mass rises
slowly, forming smaller
clouds which bring light rain.
c. As a warm front passes, the
temperature increases and
weather clears.
I can differentiate between cold fronts, warm fronts, and stationary
fronts. I can predict the weather in a region based on these fronts. (4c)
6. Stationary Front
a. Two air masses meet but
neither is strong enough to
lift the warmer air. The air
masses stop moving; they
are stationary.
b. Wind and light rain will
occur and can last for
several days.
I can differentiate between cold fronts, warm fronts, and stationary
fronts. I can predict the weather in a region based on these fronts. (4c)
Cold Front
Warm Front Stationary Front
Guided Practice
Guided Practice
1. What are the characteristics of an air mass that forms
off the coast of Alaska?
It will be cold and wet because it formed over
cold water.
2. The temperature changes from 68° F to 63° F. What
type of front has passed?
A cold front passed because the temperature
decreased.
Guided Practice
3. A meteorologist predicts that a warm front is about to
pass through. Predict how the weather will change.
The temperature will increase. Clouds
producing light precipitation will last for a few
hours.
4. Nashville, Tennessee is experiencing light wind with
rain showers on-and-off for two days. What type of
front is over Nashville?
A stationary front must be over Nashville
because the rain showers are happening for a
long amount of time.
I-N-D-E-P-E-N-D-E-N-T
DO YOU KNOW WHAT
THAT MEANS?
Exit Ticket
(5 QUESTIONS)
1. If an air mass is forming over the
Sahara Desert in North Africa, what
characteristics will it have?
A.
B.
C.
D.
Hot and wet
Hot and dry
Cool and wet
Cool and dry
2. Two air masses are meeting. They have
different temperatures and thus different
densities. What is the area called where they
meet?
A. Jet stream
B. Westerly
C. Front
D. Line
3. Today’s weather map is shown
below. What type of front is passing
through Colorado and New Mexico?
A.
B.
C.
D.
Warm
Cold
Occluded
Stationary
4. As a front passes over head, the
temperature increases and precipitation
falls. What type of front is this?
A. Cold
B. Warm
C. Occluded
D. Stationary
5. Quickly moving cold air is meeting with
warmer air. Which of these describes this?
A.
B.
C.
D.
Cold Front; the temperature will increase,
clouds will form but rain will be light.
Cold Front; the temperature will decrease,
clouds will form with heavy rain.
Warm Front; the temperature will increase,
clouds will form but rain will be light.
Warm Front; the temperature will decrease,
clouds will form with heavy rain.