Shadow size: do | Science | Quizalize & Oak National Academy

Starter quiz

Shadows are formed when ...
- light passes through an object.
- there is no light.
- light is blocked by an object. ✓
Which of these is not a light source?
- a torch
- kitchen foil ✓
- a lamp
True or false? The size of a shadow changes depending on the size of the light source.
- True
- False ✓
The distance between an object and a light source changes ...
- the size of a shadow. ✓
- the colour of a shadow.
- the shape of a shadow.
How can scientists find the answers to questions?
- by asking questions
- by sorting objects into groups
- by planning and carrying out an investigation ✓
What do we call an investigation where only one thing is changed to find its effect on another thing that is measured, and all other things are kept the same?
- grouping
- researching
- fair test ✓

Which kind of material produces the darkest shadows?
- The darkest shadows are formed when an opaque object blocks the light. ✓
- The darkest shadows are formed when a translucent object blocks the light.
- The darkest shadows are formed when a transparent object blocks the light.
Which statement is true?
- Shadows do not change size.
- Shadows change size if the light source is changed.
- Shadows change size if an object is moved further away from a light source. ✓
Which of these can be used to measure the size of a shadow?
- a stopwatch
- a ruler ✓
- a measuring jug
What is distance?
- How far away something is. ✓
- How heavy something is.
- How bright something is.
What do scientists use to record the results of an investigation?
- a plan
- a chair
- a table ✓
Why do scientists put a heading at the top of each column in a table?
- to practice spelling useful words
- to make the table look good
- to help people understand the information ✓

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The size of a shadow changes depending on the distance of an object from the light source.
Height and distance can be measured using a ruler or tape measure.
The results of an investigation can be recorded in a table.
A table of results needs headings for each column. This helps other people to understand the information.

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.

Shadow - A shadow is a dark shape that is formed when an object blocks a source of light.
Light source - Something that is a light source produces its own light.
Distance - Distance is how far away something is or how far an object has travelled.
Measure - To measure is to use equipment to find numbers to describe a feature of something such as its length, weight, size or time.
Table - A table is a grid in which information can be recorded and stored.