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

Starter quiz

Something that is a light source produces its own ______.
- 'light' ✓
Which of these can we measure?
- length ✓
- colour
- shape
Which equipment can be used to measure the distance between an object and a light source?
- a tape measure ✓
- weighing scales
- a rain gauge
What affects the size of an object's shadow?
- The distance between the object and our eyes.
- The distance between the object and the light source. ✓
- The distance between the object and the ruler.
Which of these is a table?
- image 1
- image 2 ✓
- image 3
What goes at the top of each column in a table?
- a footing
- a heading ✓
- an arming

Why do scientists make observations and measurements?
- To find out how things work. ✓
- To find out things they don't know using secondary sources.
- To find out more about the world. ✓
What do we call the information or data that is collected in a fair test investigation?
- equipment
- results ✓
- conclusion
Why do scientists review the results of an investigation?
- 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.
Which suffix do scientists use at the end of words to compare how one thing affects another thing?
- 'er' ✓
When an object is moved nearer to a light source, the object's shadow gets ...
- 'larger' ✓
Why does an object's shadow appear larger when it is nearer to a light source?
- It does not block any light.
- It blocks less light.
- It blocks more light. ✓

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

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.

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.