2 - Watercycle + types of rainfall

• Aardrijkskunde
• Middelbare school
• havo
• Leerjaar 2

Welcome back!

Bilingual Education year 2

Weather vs. Climate

Weather = the state of the atmosphere in a specific place at a specific time

Climate = The average weather conditions over a longer period

Reflection

Also: the description of weather is way more specific than the description of a climate. 

Excercise

Describing the weather

Temperature

Wind speed / direction

Cloudiness 

Precipitation

Reflection

Reflection

Reflection

!NEW! - Learning objective - !EPIC! !MUST LEARN! - WOW!

Three different types of rainfall

1) Relief Rainfall

Another word for relief is raised area. 

(E.G.: Coins have pictures on them in relief.)

Mountainous areas close to prevailing westerly winds are most likely to experience this type of rainfall. The geography of the UK means that this type of rainfall is most common in the north and west of the UK where warm moist air from the Atlantic cools as it is forced upwards over high altitudes.

1) Relief Rainfall

Prevailing wind

Prevailing winds = the usual wind in an area or region —used to refer to the direction of the wind. The prevailing wind in this region is from the west.

1) Relief Rainfall

Windward

The windward side of the hill/mountain is the side where the most rain falls

Leeward

The leeward side of the hill/mountain is the side where the least rain falls. It lies in the rainshadow of the mountain.

We are looking at Tenerife

What is the prevailing wind direction?

2) Convectional rainfall

This type of rainfall is most common in the south and east of the UK, where it is typically warmer. This area is also prone to very heavy showers and thunderstorms, this is because the warmer air can hold more water.

2) Convectional rainfall

3) Frontal rainfall

This type of rain can happen anywhere in the UK.

3) Frontal Rainfall

Summarised

The British Isles

Your turn!

Write a description about precipitation on the British Isles (minimum 50 words)

Use the following words:

evaporates / prevailing wind / southwestern wind / mountains / condensation / wet / rain shadow

Your turn!

Water in the ocean evaporates, due to the heat of the sun. The prevailing wind on the British Isles comes from the southwest. We call this a southwestern wind. The wind blows the moist air against the mountains. When the moist air climbs, it cools down and there will be condensation. This will lead to wet weather on the southwest side of the mountains. The northeastern part of the mountain will stay dry, we call this the rain shadow.