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Measurement

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If you were investigating the effect different amounts of water had on plant growth, you would need to measure both plant height and amount of water.

Measurement

Measuring is vital in KS2 Science. From recording plant growth to timing experiments, accurate measurements help pupils gather evidence and make fair comparisons.

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Fascinating Fact:

Scientists use precise measurements because even small differences can change the results of an investigation.

In KS2 Science, pupils learn how to measure length, volume, time, and temperature accurately. These skills help ensure that experiments are reliable and results can be trusted.

  • Accuracy: How close a measurement is to the true value.
  • Units: Standard amounts used to measure things, such as metres, seconds, or litres.
  • Variable: Something that can change in an experiment, such as temperature or light level.
Why are measurements important in science?

Measurements are important because they give accurate information, help compare results, and make experiments fair and repeatable.

What tools do scientists use to measure?

Scientists use rulers for length, stopwatches for time, thermometers for temperature, and measuring cylinders for liquids.

What is the difference between accuracy and estimation?

Accuracy means measuring very closely to the true value, while estimation is making a sensible guess when exact tools are not used.

1 .
If you were investigating the effect different amounts of water had on plant growth, what would you need to measure?
The plant height only
The amount of water only
Both plant height and amount of water
Neither plant height nor amount of water
As we are looking at the effect different amounts of water have on the height of plants, we need to measure both
2 .
Which unit of measurement would you use for temperature?
Degrees Celsius
Litres
Kilograms
Amperes
Temperature is measured in degrees Celsius or sometimes in degrees Fahrenheit or Kelvin
3 .
Which units of measurement would you use for the height of an object and the amount of a liquid?
Amps and newtons
Newtons and kilograms
Grams and degrees Celsius
Millimetres and millilitres
Millimetres can measure height and millilitres can measure amounts of liquid
4 .
To investigate the strength of a magnet, you could see how many paper clips could be suspended from the magnet. What would your units be in this investigation?
Metres
Number of paper clips
Litres
Newtons
Force is measured in newtons, using a forcemetre (or Newtonmeter). In this case, however, the number of paper clips would be the unit of measurement
5 .
If you were investigating different materials for insulating coffee, what measuring equipment would you need to test how cool the coffee was after 10 minutes?
A meter rule
A measuring jug
A voltmeter
A thermometer
You would also need a watch or stopwatch to measure the 10 minutes
6 .
What measuring equipment would you need to measure the height of an object and the amount of a liquid?
A measuring jug and a ruler
A stopwatch and a measuring jug
A ruler and a thermometer
A forcemeter and a ruler
Measuring jugs measure amounts of liquids and rulers measure length, width or height
7 .
Which unit is a measurement of volume?
Degrees Celsius
Litres
Metres
Amperes
Degrees Celsius measure temperature, metres measure distance and amperes measure electric current
8 .
Which unit of measurement would you use for length and height?
Degrees Celsius
Litres
Metres
Kilograms
Metres and centimetres are used for measuring length and height
9 .
If you created a catapult and wanted to test how far it could 'throw' different objects, what would you need to measure?
The distance the object is 'thrown' and the height of the catapult
The volume and height of the object
The mass of the objects and the distance each object is 'thrown'
All of the above
Lighter objects would probably be thrown further than heavier ones - why not try this experiment to see if I am right?
10 .
If you were investigating how hand length is related to height, what measuring equipment would you need?
Weighing scales
A measuring jug and a tape measure
A metre rule and a tape measure
A thermometer
You would need to measure both the length of people's hands and their height
You can find more about this topic by visiting BBC Bitesize - How to use scientific equipment

Author:  Sheri Smith (PhD English Literature, English Teacher & Quiz Writer)

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