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Year 3

Shadow size: review

I can explain results about shadow size.

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New
New
Year 3

Shadow size: review

I can explain results about shadow size.

Download all resources
Share activities with pupils

Lesson details

Key learning points

  1. Scientists make observations and measurements to help them to learn more about the world and how things work.
  2. Scientists review the results they have collected to decide what happened and explain what they have found out.
  3. We can use words ending in -er to explain how one thing affects another thing.
  4. When the object is closer to the light source, it blocks more light and this makes the shadow appear bigger.

Common misconception

The size of a shadow does not change.

Explanation of how the size of shadows change depending on the distance of the object from the light source.

Keywords

  • Object - An object is something you can touch but something that is not usually a living thing.

  • Shadow - A shadow is a dark shape that is formed when an object blocks a source of light.

  • Distance - Distance is how far away something is or how far an object has travelled.

  • Light source - Something that is a light source produces its own light.

  • Results - The results of a test or enquiry is what happened and what was found out.

Equipment

Pupils' results from lesson 8 of this unit.

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).

Video

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Starter quiz

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6 Questions

Q1.
Something that is a light source produces its own .
An image in a quiz
Correct Answer: light
Q2.
Which of these can we measure?
An image in a quiz
Correct answer: length
colour
shape
Q3.
Which equipment can be used to measure the distance between an object and a light source?
Correct answer: a tape measure
weighing scales
a rain gauge
Q4.
What affects the size of an object's shadow?
An image in a quiz
The distance between the object and our eyes.
Correct answer: The distance between the object and the light source.
The distance between the object and the ruler.
Q5.
Which of these is a table?
image 1
Correct answer: image 2
image 3
Q6.
What goes at the top of each column in a table?
An image in a quiz
a footing
Correct answer: a heading
an arming
Q3 image 3 Budimir Jevtic/Shutterstock Q5 image 1 BNP Design Studio/Shutterstock

Exit quiz

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6 Questions

Q1.
Why do scientists make observations and measurements?
An image in a quiz
Correct answer: To find out how things work.
To find out things they don't know using secondary sources.
Correct answer: To find out more about the world.
Q2.
What do we call the information or data that is collected in a fair test investigation?
An image in a quiz
equipment
Correct answer: results
conclusion
Q3.
Why do scientists review the results of an investigation?
An image in a quiz
Correct answer: To decide what happened and explain what they have found out.
To say what they think will happen in an investigation.
To follow instructions for how to carry out an investigation.
Q4.
Which suffix do scientists use at the end of words to compare how one thing affects another thing?
An image in a quiz
Correct Answer: er, -er
Q5.
When an object is moved nearer to a light source, the object's shadow gets ...
An image in a quiz
Correct Answer: larger, bigger, taller
Q6.
Why does an object's shadow appear larger when it is nearer to a light source?
An image in a quiz
It does not block any light.
It blocks less light.
Correct answer: It blocks more light.