# 3.2 Temperature differences on Earth (HV1T)

Today
3.2 Temperature differences on Earth
• Recap 3.1 (10 min.)
• You explain 3.2 to me (10 min.)
• Extra help 3.2 OR assignments (20 min.)
• Explanation 3.3 (10 min.)
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Slide 1: Tekstslide
AardrijkskundeMiddelbare schoolvwoLeerjaar 1

In deze les zitten 23 slides, met tekstslides en 2 videos.

Lesduur is: 60 min

## Onderdelen in deze les

Today
3.2 Temperature differences on Earth
• Recap 3.1 (10 min.)
• You explain 3.2 to me (10 min.)
• Extra help 3.2 OR assignments (20 min.)
• Explanation 3.3 (10 min.)

#### Slide 4 -Tekstslide

Summary review 3.2
What have you learned?

#### Slide 5 -Tekstslide

Learning goals 3.2
KNOWLEDGE
• You know that the Earth has a habitable climate thanks to the atmosphere.
• You understand the influence the position of the Sun and the geographical latitude have on temperature.

SKILLS
• You can calculate the average temperature.

#### Slide 6 -Tekstslide

Get to work
Think it's difficult? Make 3.2 assignment 7 on page 71.

Want more challenge? Make 3.2 assignment X on page 71.

#### Slide 7 -Tekstslide

The Earth has a blanket
1. Without the atmosphere, the temperature at night would be freezing cold / boiling hot.
2. The atmosphere is directly / indirectly warmed by the Sun.
3. The higher in the atmosphere, the higher / lower the temperature

#### Slide 8 -Tekstslide

The higher, the colder.
Temperature decreases on average by 6  ⁰C per kilometre.

The temperature at 1000 metres is 14 ⁰C.
What is the temperature at 2000 metres?

What is the temperature at 3500 metres?

#### Slide 9 -Tekstslide

The higher, the colder.
Temperature decreases on average by 6  ⁰C per kilometre.

The temperature at 1000 metres is 14 ⁰C.
What is the temperature at 2000 metres?
8 ⁰C

What is the temperature at 3500 metres?
-1 ⁰C

#### Slide 10 -Tekstslide

Average daily temperatures are used to describe the climate with.
• maximum temperature
• minimum temperature
5a + b. At what time of day is the temperature often the lowest? Explain your answer.
5c. When te maximum T is 21 degrees and the minimum T is 5 degrees. What is the average day temperature?
5d. What does the average day temperature say about the climate?

#### Slide 12 -Video

The Netherlands lies at 52⁰ N:
• Suns rays hit the Earth at an angle.

The Equator lies at 0⁰:
• Suns rays hit the Earth perpendicularly
• 3x as much Sun-energy as the poles

Because the Earth is a sphere, the angle of incidence of the Sun is different everywhere on Earth.

#### Slide 13 -Tekstslide

high Sun position
large surface is heated

#### Slide 14 -Tekstslide

Get to work
Think it's difficult? Make 3.2 assignment 7 on page 71.

Want more challenge? Make 3.2 assignment X on page 71.

#### Slide 15 -Tekstslide

4a. The photo was taken on the beach in the Netherlands. Is it evening or morning?

#### Slide 16 -Tekstslide

Learning goals 3.3
KNOWLEDGE
• You know what the consequences are of the angled position of the Earth's axis for day and night on Earth.
• You can explain why the angled position of the Earth influences the seasons and temperature on Earth.

SKILLS
• You can make a drawing of the Earth with respect to the Sun for different times of the year.

#### Slide 17 -Tekstslide

Summary review 3.3
What have you learned?

#### Slide 19 -Video

The Earth's axis is at an angle. For the Netherlands this means:
on 21 March: Sun directly above the Equator, spring begins
on 21 June: Sun directly above Tropic of Cancer, summer begins
on 21 September: Sun directly above the Equator, autumn begins
on 21 December: Sun directly above Tropic of Capricorn, winter begins

#### Slide 20 -Tekstslide

In which month are the northern lights visible at the North Pole during the polar night?

When the Sun does not drop below the horizon, it is light 24 hours a day. This is called polar day.

December 21st
June 21st

#### Slide 22 -Tekstslide

Get to work
Think it's difficult? Make 3.3 assignment 1, 3, 4 and 7 on page 72 and 73 of the workbook.

Up to more challenging work? Make assignment 7 on page 73 and Support 3.3 on page 77 of the workbook.

Done? Start with the assignments of 'Localisation on Earth' on page 66 and 67 of the workbook.