New
New
Year 5

Why we have day and night

You can explain why we have day and night.

New
New
Year 5

Why we have day and night

You can explain why we have day and night.

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Lesson details

Key learning points

  1. The axis is an imaginary straight line which goes through the centre of the Earth from the North to the South Pole
  2. Day and night are due to the Earth rotating on its axis
  3. It is daytime when the Earth is facing the Sun and night time when the Earth is facing away from the Sun
  4. The Earth takes 24 hours to rotate on its axis
  5. Models can be used to demonstrate how the Earth's rotation causes day and night

Keywords

  • Earth - The Earth is a planet on which we live

  • Sun - The Sun is a star and the centre of our solar system

  • Rotate - To rotate is to turn or spin

  • Axis - The Earth’s axis is the imaginary line through its centre, from North pole to South pole

  • Model - A model is used to describe something that can’t be experienced directly

Common misconception

Pupils may think that we have night when the Earth is facing the Moon or the Sun goes behind clouds.

Provide plenty of opportunities for pupils to use models to show the Earth rotating on its axis, next to a bright torch or lamp for the Sun.

Models to help pupils understand day and night are best used in a darkened room. For the Earth, balls on sticks work better than balls on string, as they are more stable and easier to rotate at a constant speed.
Teacher tip

Equipment

See Supplementary Resources for detailed guidance.

Content guidance

  • Risk assessment required - equipment
  • Exploration of objects

Supervision

Adult supervision required

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Lesson video

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6 Questions

Q1.
This object in space is called the .
An image in a quiz
Correct Answer: The Sun, The sun, star, Sun, sun
Q2.
Which object would not be good to make a model of the Sun?
a beach ball
a bowling ball
Correct answer: a doughnut
Q3.
Without the Sun, there would be no life on Earth. The Sun gives us warmth and .
An image in a quiz
Correct Answer: light, sunlight
Q4.
Starting with the Sun, put these objects in order of size.
1 - The Sun
2 - Earth
3 - The Moon
Q5.
How many hours are there in one day?
12 hours
Correct answer: 24 hours
365 hours
Q6.
Where would you find the North Pole and South Pole of Earth?
An image in a quiz
Correct answer: At the start and finish of Earth
At the sides of Earth
At the top and bottom of Earth
All the way around Earth

6 Questions

Q1.
What is the imaginary line through the centre of Earth called?
equator
horizon
Correct answer: axis
Q2.
How does Earth move to cause day and night?
An image in a quiz
Correct answer: Earth spins, or rotates, on its axis.
Earth bounces up and down on its axis.
Earth swings forwards and backwards on its axis.
Q3.
It is day time when your part of Earth is facing the .
Correct Answer: Sun, sun, sunlight, light
Q4.
Which statement correctly explains why we have night time on Earth?
An image in a quiz
Correct answer: At night time, our part of Earth is facing away from the Sun.
At night time, our part of Earth is facing the Moon.
At night time, the Sun goes behind the clouds.
Q5.
How long does it takes for Earth to rotate once on its axis?
An image in a quiz
24 minutes
Correct answer: 24 hours
24 days
24 weeks
Q6.
Which object could you use for the Sun's light in a model to show why we have day and night?
An image in a quiz
a mirror
Correct answer: a torch
a yellow plate

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