Fun Thermometer Facts

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How to read a thermometer?

How to read a thermometer?

Why not introduce your children to thermometers. A fun way to learn about maths and sciences, giving them understanding scale and environmental changes.

As part of our Weather Station activities we thought it very important we include the clever thermometer which was invented by Galileo in 1593. They've been around a very long time and are very useful instruments when it comes to measuring the weather!

Do your children look at the weather on your phone? Do they understand the changes in the hot and cold weather and that this is described as temperature? Do they know that we measure the temperature with a thermometer! Here's your fun guide to thermometers and temperature. A really fun way to learn about maths and science, plus helping your children to understand environmental changes.

What is a thermometer?

Thermometers are used to measure temperature, that’s how hot or cold it is.

Who invented it?

In 1593 Galileo created an instrument called a thermoscope. This is a very basic thermometer, it could indicate a change in temperature but it did not have a scale. Later in 1612 Santorio, an Italian scientist added a scale to Galileo’s thermoscope making a Thermometer. It was very inaccurate so in 1714 Daniel Gabriel Fahrenheit looked again at Galileo’s thermoscope. He invented the modern thermometer we use today. His scale for measuring temperature is Fahrenheit's and is still used today. Anders Celsius, in 1742, came up with the scale degrees. This is the most widely used temperature measurement scale in the world today.

What are they made of?

A thermometer is made of a thick glass tube with liquid mercury inside. When the liquid mercury gets hot it increases in size and pushes up the tube. When it cools down it gets decreases inside and moves down the tube. Next to the glass tube is a scale of numbers going from 0-100.

How to tell what the temperature is?

Temperature is measured in something called degrees. To write degrees we put a small ‘o’ next to the number. So if we look at a thermometer and the liquid mercury stops at 20 we would say its 20°.

What is a thermometer?

Thermometers are used to measure temperature, that’s how hot or cold it is.

What are they made of?

A thermometer is made of a think glass tube with liquid mercury inside. When the liquid mercury gets hot it increases in size and pushes up the tube. When it cools down it gets decreases inside and moves down the tube. Next to the glass tube is a scale of numbers going from 0-100.

How to tell what the temperature is?

Temperature is measured in something called degrees. To write degrees we put a small ‘o’ just next to the number. So if we looked at the thermometer and it the liquid mercury stop at 20 we would say its 20°.

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thermometer illustration bkd

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Enjoy our experiment?

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