Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Weather - 6th Grade

No description
by

William Begoyan

on 6 January 2016

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Weather - 6th Grade

Weather
By: Mr. Begoyan
Page 33 in your ISN - Page 300-330 in your Textbook
Avid EQ: Where and how does weather originate?
Water in the atmosphere
The continuous movement of water between the Earth's surface and the atmosphere is called the
water cycle
.
Solar radiation
powers the
water cycle.
The water cycle has 4 parts.
Evaporation
Condensation
Precipitation
Surface runoff
In
evaporation
, water molecules in liquid state absorb energy and escape in gas form.
Humidity
is the measure of the amount of water vapor in the air.
Maximum humidity is determined by temperature, with warmer air holding more water vapor than cold air.
Relative humidity
is based on air temperature.
Psychrometers
are used to measure relative humidity.
Clouds
Clouds form when water vapor (gas) in the atmosphere
condenses
in to liquid.
The temperature of the air has to cool before condensation takes place.
The temperature at which water condenses is called a
dew point.
There are 3 main cloud types:
Stratus clouds are found the closest to the surface, are uniform grey color, and will cover most of the sky.
Cumulus clouds are found a little higher than stratus clouds, and are puffy white in appearance, resembling cotton candy.
Cirrus
clouds are found at very high elevations (higher than any other cloud). They have a white, feathery, wispy appearance.
The prefix "
Alto
" can be added to clouds, which means tall. For example, Altostratus and Altocumulus are found at higher elevations.
The prefix "
Nimbo
" and the suffix "
Nimbus
" can be added to clouds, which means rain. For example, Nimbostratus and Cumulonimbus will produce drizzle, rain, or snow.
Clouds that form at or near the ground are called
fog
.
Precipitation
Precipitation

is any form of water that falls from clouds and reaches the surface.
There are 5 primary types:
Rain
is the most common type, and is made of water droplets of at least 0.5mm in diameter.
Rain with smaller water droplets is called a
drizzle
, while even smaller droplets form
mist
.
Hail
is made of pellets of ice larger than 5mm in diameter.
Hail is primarily formed in the cold center of cumulonimbus clouds during thunderstorms.
In freezing (or near freezing) temperatures, water vapor turns into tiny ice crystals with varying patterns called snow.
Sleet
is formed when rain droplets (5mm or smaller) encounter a cold layer of air and freeze before reaching ground.
When the surface is much colder than the air, rain droplets will freeze when they hit the cold ground, forming into layers of ice.
This is called freezing rain.
Air mass and fronts
An
Air Mass
is a huge body of air that has similar temperature, humidity, and air pressure.
There are 5 major types:
Maritime Tropical
: Warm and moist, formed over warmer waters.
Maritime Polar
: Cool and moist, formed over cooler waters.
Continental Tropical
: Warm and dry, formed on land, in warmer climates/locations.
Continental Polar
: Cool and dry, formed on land, in cooler climates/locations.
Continental Arctic:
Cold and dry, formed in the arctic.
The boundary where 2 different air masses meet is called a
front.
There are 4 major types:
warm
cold
Questions part 1
1. What happens during the water cycle?
2. How does evaporation work?
3. What is humidity, and how is it different from relative humidity?
4. What are clouds made of?
5. What are the different types of clouds? Describe them.
6. What are the prefixes that can be attached to some clouds, and what do they mean?
Storms
&

Cyclones
Thunderstorms
form inside larger cumulonimbus clouds.
These clouds form on warmer, humid afternoons, when warm air is forced up by a cold front.
Most thunderstorms form on land where cold/warm fronts are likely to meet.
The constant motion in a thunderstorm builds up electric charges, and can rapidly discharge as
lightning.

The lightning discharge can heat up air near it by as much as 30,000 C (more than double the temperature on the Sun's surface!).
The heat causes air to expand in an explosive manner, resulting in
thunder.
When temperatures are below the freezing point, snowstorms replace thunderstorms.
Tornadoes (twisters)
form in cumulonimbus clouds when hot air rises very rapidly.
Cyclones

(hurricanes)
are low air pressure masses that spin in a clockwise direction.
Predicting Weather
Questions part 2
7. What qualifies as an air mass?
8. What are the masses that contain dry air?
9. What air masses form over land?
10. What is an air front?
11. Where do thunderstorm form?
12. Where do tornadoes form?
13. Describe a cyclone.
14. Who predicts weather, and what do they use?
Meteorology
is the study of weather.
Meteorologists
are scientists who study and predict weather patterns based on data they receive from sources like:
Weather balloons, weather satellites, and weather stations scattered all across the world.
Homework - Page 32 in ISN
With the help of visuals, describe the water cycle, types of clouds, types of air masses, storms, and cyclones.
Full transcript