Transcript Cloud Types Presentation

Cloud Types and Formation,
Water Cycle, Precipitation
Chapter 7
Lesson 2
How does the water cycle affect weather?
cloud forming
cloud forming
warm air
warm air
cloud forming
warm air
cool air
- Water in the Atmosphere
How Clouds Form
•Clouds form when warm, moist air rises and cools.
Water vapor condenses on tiny particles to form
liquid water or ice crystals.
- Water in the Atmosphere
Types of
Clouds
•Scientists
classify clouds
into three
main types
based on their
shape: cirrus,
cumulus, and
stratus.
Clouds are
further
classified by
their altitude.
What are the types of clouds?
13 km
cirrocumulus
high clouds
cirrostratus
cirrus
cumulonimbus
5 km
middle clouds
altocumulus
altostratus
low clouds
2 km
stratocumulus
cumulus
stratus
nimbostratus
0 km
- Precipitation
Water Droplets
•Droplets come in many sizes. A raindrop has
about one million times as much water in it as a
cloud droplet.
What are the different types of precipitation?
Rain
Sleet
Hail
Snow
- Precipitation
How Hail Forms
•Hailstones start as small pellets of ice in
cumulonimbus clouds. They grow larger as they
are repeatedly tossed up and down until they
become so heavy they fall to the ground.
- Water in the Atmosphere
Asking Questions
Question
Answer
How does the water cycle work?
Water evaporates from the surface,
condenses to form clouds, and falls to Earth
as rain or snow.
What is relative humidity?
The percentage of water vapor in the air
compared to the maximum amount air can
hold at that temperature
How do clouds form?
Water in the air condenses on tiny particles
in the air to form liquid water or crystals.
Can you determine weather conditions by
looking at clouds?
Yes; each type of cloud is associated with a
particular type of weather.