2. Aim of the lesson
By the end of the lesson I should know
The characteristics of the 3 types of rainfall.
The similarities between the types of rainfall.
The differences between them
3. Learning outcomes
By the end of the lesson I should have
Reorganised the slides on the three types of rainfall
Described the similarities and differences
Extension activity
Custom animated them into a logical sequence
4. Types of rainfall
Move the items into the correct places on the slide and
use custom animation to show the sequence of events
Put a correct title on each type of rainfall by removing
the other types from the title
5. Mountains on the west coast
of Britain forces the air to rise
Water vapour
Condenses to
form clouds
Evaporation of water
from the ocean
Onshore
moisture laden
winds
Air cools
down
Further cooling
leads to precipitation
Formation of Convectional / Relief / Frontal Rainfall
Occurs in the mountains on
the west coast of Britain
1,000 mm
2,000+ mm
Under 750 mm
6. Water vapour
Condenses to
form clouds
Air cools down
Further cooling
leads to heavy
precipitation
Warm air rises
Ground heats up the air
Sun’s rays heat up
the ground
Occurs in Britain in the late afternoon after the maximum heating
In the tropical rainforest every afternoon
Formation of Convectional / Relief / Frontal Rainfall
7. Water vapour
Condenses to
form clouds
Warm air rises
Further cooling leads
to precipitation along
the Warm Front
Air cools down
Occurs mainly in
winter in Britain but
can occur any time
of the year
Warm moisture laden air
from the south meets cold
air from the north and forms
the Warm Front
Formation of Convectional / Relief / Frontal Rainfall
Warm air
Cold air
8. Types of rainfall
Complete these exercises
Describe the similarities between the 3 types of rainfall.
(4)
What are the differences between the types of rainfall?
(Think about the reason for air moving)
9. Mountains on the west coast
of Britain forces the air to rise
Water vapour
Condenses to
form clouds
Evaporation of
water from the
ocean
Onshore
moisture laden
winds
Air cools
down
Further cooling
leads to
precipitation
Formation of Relief Rainfall
Occurs in the mountains
on the west coast of
Britain
1,000 mm 2,000+ mm Under 750 mm
10. Water vapour
Condenses to
form clouds
Air cools down
Further cooling
leads to heavy
precipitation
Warm air rises
Ground heats up the air
Sun’s rays heat up
the ground
Convectional Rainfall
Occurs in Britain in the late afternoon after the maximum heating
In the tropical rainforest every afternoon
11. Water vapour
Condenses to
form clouds
Warm moisture laden air
from the south meets cold
air from the north and forms
the Warm Front
Warm air rises
Further cooling leads
to precipitation along
the Warm Front
Air cools down
Frontal or Depression rainfall
Occurs mainly in
winter in Britain but
can occur any time
of the year
Cold air
Warm air
12. Similarities and differences
All 3 types of rainfall involve
Warm moist air rising
Warm air cooling
Water vapour condensing to form clouds
Further cooling leading to precipitation
The difference is the reason why the air is
rising
Relief – air is forced to rise over mountains
Convectional – air is being heated
Frontal – warm air is rising over cold air
