C2.2 - Lesson 4: Rivers of ice

• Aardrijkskunde
• Middelbare school
• vwo
• Leerjaar 2

From the mountains to the sea

C2.2: Rivers of ice

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The NEWS one year ago

Earthquakes in Morocco

Use map 181C in the atlas (GB55):

1. Which two plates caused the earthquake?
2. What plate movement do they make?
3. How many earthquakes above a magnitude                                                            of 6 have been measured in Morocco since 1980?
4. What is the earthquake risk in Marrakech?
5. What is the name of the mountain range where the earthquake occurred?
6. Explain in 3 steps how the Atlas mountain range is formed.

The location of the earthquake is between Marrakech and Agadir

What is the plan for today?

• Check homework
• Repeat paragraph 1 - QUIZ
• Start "Rivers of ice"

Goals of last lesson

1. You can mention 3 differences between a young and an old mountain range.
2. You know the 4 different reliefforms, with their height (G77).
3. You can explain the process of the 3 types of weathering (G81).
4. You can explain the erosive effect of weathered material in the mountains (G84).

THE BIG C2.1 QUIZ!!!

"From the mountains to the sea"

"When minerals in the rock react to oxygen, water etc."

1. Mechanical weathering
2. Biological weathering
3. Chemical weathering

"Caused by living organisms"

1. Mechanical weathering
2. Biological weathering
3. Chemical weathering

"Breaks into pieces because of temperature differences."

1. Chemical weathering
2. Biological weathering
3. Mechanical weathering

Rock expands when it heats and contracts when it cools."

1. Mechanical weathering
2. Biological weathering
3. Chemical weathering

An area with no relief at an altitude less than 500m.

1. Plateau
2. Plain

"The Netherlands"

1. High mountain range
2. Low mountain range
3. Hills
4. Lowland

"Ardennes"

1. High mountain range
2. Low mountain range
3. Hills
4. Lowlands

Peaks between 200 and 500 metres.

1. High mountain range
2. Low mountain range
3. Hills
4. Lowland

"Steep slopes"

1. Old mountain range
2. Young mountain range

"Alps"

1. Old mountain range
2. Young mountain range

"Round tops"

1. Old mountain range
2. Young mountain range

Young or old?

Young or old?

C2.2: Rivers of Ice

GLACIERS

Copy the following question in your notebook:

   Write down as many facts about glaciers as you can.

1.

2.

3.

4.

5.

Today's goals

1. You can explain how a glacier is formed, using the following terms: precipitation, firn
   , basin, glacier (G87). 
2. You know 3 kinds of moraines and the corresponding location in the glacier.

MORAINES

You can explain how a glacier is formed, using the following terms: precipitation, firn , basin, glacier (G87).

Precipitation - Water (rain, snow or hail) from the athmosphere that falls on the Earth.

Firn - Crystalline, ice snow left over from previous seasons. (old snow)

Firn basin - A place high in the mountains where firn accumulates.

V-shaped valley

caused by a river

U-shaped valley

caused by a glacier

U-shaped valley

You can relate the terms glacial tunnel, glacial portal and glacier-fed river to each other.

Let's go!

• Read the text at page 26/27 of your coursebook.
  
• Make exercises 1, 2 & 4 of paragraph 2 at page 26 in your workbook.
• Read GeoGuide numbers 86 & 87.

Rules while working:

• You work alone and in silence.
  
• Raise your finger if you've a question.
  
• Always read the exercise well before you ask your question.