Types of rainfall Year 8

Aim of the lesson : 

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

Learning outcomes : 

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

Types of rainfall : 

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

Slide 4: 

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

Slide 5: 

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

Slide 6: 

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

Types of rainfall : 

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)

Plenary : 

Plenary Outline 3 or 4 things that you learnt today

Slide 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

Slide 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

Slide 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

Similarities and differences : 

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