Day and night and the Seasons

SPACE - Lesson 1

Day, Night and SeasonsLesson Objectives

Objectives

• To identify that day and night is caused by the rotation of the earth on it’s axis.

• To identify that the seasons are caused by the earth rotating around the sun

How long is one day?

24 hours

How long is one year?

365¼ daysThe Earth spins on its axis, which is tilted at an angle of 23.5° it is always the same direction.

The earth also rotates around the sun

This causes day and night and the seasons.

Day and night

sun

ligh

t

It take the Earth 24 hours to complete one rotation about its axis.

Day and night

What time is it? It is 04:00 in London. What time is it in other parts of the Earth?

Place GMT Time

Casablanca +1

Pretoria +2

Antanarivo +3

Philippines +8

05:00

06:00

07:00

12:00

Casablanca

Philippines

Antanarivo

Pretoria

The rotation of the Earth

The seasons

summer in the UK

winter in the UK

autumn in the UK

spring in the UK

What is the season?

east west

Copy the diagram above and add two ‘sun lines’ – one line for summer and one line for winter.

autumn

The position of the Sun and the seasons

summer

winter

What have you learnt?It is Winter in Britain because....

1) The Sun shines on us for a shorter time in Winter than in Summer so we get less heat. 2) The Sun's rays reach us at an angle, 'spreading-out' the heat over a larger part of the Earth. Neither 1 nor 2 Both 1 and 2

Answer questions on page 162-163 of Go Science 1 book

Q. What causes seasons?

Q. Why are the seasons in the Southern Hemisphere opposite to those in the the northern hemisphere?

Q. Why are the days longer in the summer than the winter?

1 question you have about the lesson

3 things you have learned today

Plenary - Pyramid of knowledge

2 things you would like to know more about