Transcript Weather Powerpoint File - Galena Park ISD Moodle

Weather
2016-2017
Mr. Olivares
Pre-AP Science
NSMS
Create a Divider
Unit: 9 Weather
Draw something related to weather
on the divider
If I gave you a progress report, make
sure to turn it in.
Warm up (2-13-17)
1. What keeps our planet warm and where
does such thing come from?
2. Which areas of the Worlds are hotter? Why?
Earth’s Energy source
• Our planets energy source comes from the
sun.
• What kind of Energy?
• Radiant Energy is our planet’s energy source.
• How does it get to Earth?
• Through a process called radiation.
• Radiation: The transfer of Energy by
electromagnetic waves.
• Radiant Energy mainly consist of Visible Light,
UV rays, and Infrared radiation.
• Visible Light is what we can see (colors of the
rainbow).
• The majority of sunlight (radiation) is visible
light.
Thermal Energy
• Visible Light turns into Thermal Energy once it
reaches the Surface of the planet.
Only 50% of the sunlight (Radiation) is absorbed
by the Earth, the rest is reflected.
The other 50% is reflected by the clouds,
particles in the atmosphere, and some by land
and water.
Where does the Earth absorbs most of the Energy?
Draw the picture, and discuss the answer with your
table (4mins)
The Earth absorbs most of the Radiant
Energy in the Equator.
The Radiation concentrates in a small area
The poles do not get as much Radiation
since the light spreads over a larger area.
What are the results of Uneven
Heating of the Planet?
Ocean Currents
&
Winds
How does the Uneven Heating of the
planet causes Ocean Currents and
Winds?
• Take 2 minutes to discuss the answer with
your table.
How does the Uneven Heating of the
planet causes Ocean Currents and
Winds?
Well, it creates convection
currents.
What is convection though?
• Convection: The transfer of Thermal Energy by the
movement of particles within matter.
Draw the
Picture, make
It pretty!
High and Low Pressure
• Cold air/water has a High Pressure (particles are compact)
• Warm air/water has a Low pressure (particles spread apart)
The differences in pressures causes
areas with high pressure to move into
areas with low pressure. Video
Is there any other ways in which Thermal Energy
can be transfer? Of course!
• For example Conduction and Radiation.
• Conduction: The Transfer of Thermal Energy By
collision between particles in matter.
• Radiation, Definition in your Notes
-Who wants to read it out loud?
Draw it, MAKE IT PRETTY!
How do convection currents create
ocean currents and winds? Discuss it
with your table
Ocean Currents created by the
differences in temperatures
The Sun’s radiation heats up more the latitudes near the Equator than
the poles.
Cold water travels to the Equator, and Warm water travels to the poles
WARM UP
“assignment # 2”
1. Why are the Poles of the Earth cooler than
Tropical areas?
2.When you stand still under the sun, what kind
of thermal energy do you experience?
3.next to a fire?
4.Walking bare footed on concrete (summer
time?)
5.Do air moves from low pressure areas to high
pressure areas or the other way around?
What about Wind? How is it created?
Hot air rises (low
pressure), Cold air
(High Pressure)
sinks
• Draw the picture
and make it pretty!
What gets hotter and cooler faster,
land or water?
• Discuss it with your table
What gets hotter and cooler faster,
land or water?
Land absorbs and loses Heat faster than water
So what?
• Well, we can explain the wind that we feel
when we are close to the ocean.
Land Breeze and Sea Breeze
Sea Breeze
• Wind That blows from sea to land. Draw It
Land Breeze
• Wind that blows from land to sea. Draw it
Video
• Crash Course
How come sometimes the weather is
humid and warm, and sometimes is
cold and dry?
What do the different wind patterns
create?
Air Masses
• Large bodies of air that have uniform
temperature, humidity, and pressure.
Draw it,
Do your best!
Draw it,
Do your best!
Draw it,
Do your best!
Draw it,
Do your best!
How do you classify air masses?
• Air masses are classified by their Temperature
and Moisture characteristics.
So……
• Continental air masses: those that form over
land.
Maritime air masses
• Those that form over oceans and water
Air Masses, Air Masses, Air Masses
• Tropical Air Masses: Those that form in the
Equatorial regions
• Polar Air Masses: Those that form in cold
regions.
• Arctic and Antarctic Air Masses: they form
near the poles.
• Continental: Originates on land
• Maritime: originates in the oceans
Open Your Books on page number 454
• Write down the characteristics of the air masses.
• 5 in total.
• Once you finish, Write and Answer question #3 on
page 454 by using the following picture
Warm up
Assignment #3
• 1. Explain the paths of the ocean
currents?
• 2. Which air mass is denser: a cold
air mass or a warm air mass? explain
• 3.What rises, Hot air or Cold air?
Why?
Ocean Currents
•
•
•
•
Ocean currents worksheet
12 mins to color it and answer the questions.
Work with your shoulder partner.
Currents moving from tropical areas to the
poles should be red, orange, or yellow.
Currents moving from the poles to tropical
areas should be blue, purple or violet.
Follow up questions From the Ocean
Currents
1. In which direction do the oceans move in the
Northern Hemisphere? Southern Hemisphere?
2. How will you predict the weather to be in Houston if
we get a maritime tropical air mass coming from
the gulf stream?
3. What about California with a maritime air mass
coming from the California current?
Follow up questions From the Ocean
Currents
1. In which direction do the oceans move in the Northern
Hemisphere? Southern Hemisphere? North=clockwise,,
South= Counterclockwise
2. How will you predict the weather to be in Houston if we get
a maritime tropical air mass coming from the gulf stream?
Hot and Humid
3. What about California with a maritime polar air mass
coming from the California current?
Cold and Humid
High Pressure System
• Large body of circulating air with high
pressure (warm air) at its center and lower
pressure outside the system.
• Because air moves from high pressure to low
pressure, the air inside the system moves
away from the center.
• Dense air sinks bringing clear skies and fair
weather.
High pressure system, Draw it, color
code the arrows
Low Pressure System
• Large body of circulating air with low pressure
at its center and higher pressure outside of
the system.
• This causes air inside the low pressure system
to rise.
• The raising cool air, and the water vapor
condenses forming clouds and sometimes
precipitation- rain or snow.
Low pressure system, Draw it and
color code the arrows.
Fronts
The following symbols represent different fronts on a
map.
Draw them and color code them
What is a Front?
• A front is a boundary in between two air
masses.
• Changes in temperature, humidity, cloud
types, wind, and precipitation are common at
fronts.
How do fronts form?
• Fronts form when air masses bump into each
other.
• Weather changes along fronts when two air
masses collide because one air mass is usually
forced to rise, which can change temperature
and humidity levels.
Warm Front
Draw the pic
• Forms When warm less dense air moves
towards colder, dense air.
• Creates a wide blanket of clouds, which bring
steady rain or snow for several hours or days.
•
•
•
•
Cold Front
Cold air moves toward warm air.
Warm air is forced to raise and it cools forming clouds
As it cools it forms clouds
Showers and Thunderstorms often form
Draw the picture,
Make it Pretty!
Draw the picture,
Make it Pretty!
Occluded Front
• Cold fronts move faster than warm fronts.
• Occluded Fronts occurred when a cold front
catches up with a slow moving warm front.
• Draw it, and make it look nice =)
Stationary Front
• When the boundary between two air masses
stalls. Draw, make it look nice!