Lesson 4 — 3.2 Day and night + 3.3 The seasons

• Nask
• Middelbare school
• havo, vwo
• Leerjaar 1

Astronomy

3.2 Day and night

+

3.3 The seasons

This lesson

• Quiz questions
• 3.2 Day and night
  
• 3.3 The seasons
  

Learning goals

• Explain why we have day and night and why the sun rises in the east en sets in the west.
  

• Describe what the earths rotational axis is and what its tilt is.

• Describe how Foucault's pendulum shows the earth rotation.

• Explain what causes the seasons.

What do you know about the movement of the earth?

What causes day and night?

The distance between the sun is different depending on where it is in its orbit. Half of the year the earth is further away from the sun, the other half it is closer. This causes the seasons.

1. True
2. False

The seasons are caused because the amount of Sun hours the Earth gets per season are different.

1. True
2. False

The seasons are caused by the tilt of the Earth

1. True
2. False

When it's summer in the northern hemisphere its winter in the southern hemisphere

1. True
2. False

1) How long does it take Earth to spin once around it's axis?

2) How long does it take Earth to make one rotation around the sun?

3) When it's night, that area of the earth is faced towards / away from the sun

4) When it's day, that area of the earth is faced towards / away from the sun

5) How many degrees is the tilt of the Earth's axis?

6) What is the northern hemisphere of the earth? What is the southern hemisphere of the earth?

7) The seasons in the Northern and southern hemisphere's are reversed. True or false?

3.2 Day and night

Foucault's pendulum

• Why does the pendulum appear to move in a circle?
  
• What is really happening?

3.3 The seasons

The reasons for the seasons

What difference are there between summer and winter?

• It's warmer in summer than in winter.
  

• The days are longer in summer than in winter.
  

• The sun is higher in the sky at noon in the summer than it is at noon in the winter.
  

The reasons for the seasons

Homework 

• Workbook exercises 3.2

Learning goals

• Explain why we have day and night and why the sun rises in the east en sets in the west.
  

• Describe what the earths rotational axis is and what its tilt is.

• Describe how Foucault's pendulum shows the earth rotation.

• Explain what causes the seasons.

• Explain how the earths tilt effects the path of the sun over the sky.