# Functional Skills: Scales

## Functional Skills: Scales Revision

**Scales**

In this section, we’ll look at how to measure length, temperature, volume and weight, using **scales**.

Make sure you are happy with the following topics before continuing.

**Measuring Length**

Use a **ruler** to measure length. Typically, the units on a ruler will be in mm and cm or sometimes even in m on a longer ruler, though some may include inches, with feet on a longer ruler.

**Example:** Measure the **length of this square**.

Put your ruler next to the square, making sure you start measuring from 0.

So, we can see that the **length** of the square is **4 cm**.

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**Measuring Temperature**

We use a **thermometer** to measure temperature. The units on a thermometer will usually be given as **Â°\text{C}**, “**degrees Celsius**“, with **Â°\text{F}**, “**degrees Fahrenheit**“, along the side.

**Example:** Measure the temperature on this thermometer in **Celsius**.

The line indicating temperature is exactly halfway between **20Â°\text{C}** and **30Â°\text{C}**, so the temperature is **25Â°\text{C}**.

**Measuring Volume**

A** measuring jug / cylinder** is used to measure volume. The units will almost always be in ml or litres. It’s very important to make a note here, as different pieces of apparatus will have different maximum volumes. For example, a measuring jug may contain a few litres of fluid, but a measuring cylinder might only contain a few hundred millilitres.

**Example:** Measure the **volume of liquid** in this measuring jug, and give the values in millilitres and litres.

The line indicating the top of the fluid reaches **750 ml**, which is equivalent to **0.75 litres**.

**Measuring Weight**

Use a **weighing scale** to measure weight. The units for these scales are usually in mg, g or kg, though some newer scales will allow you to switch to pounds, ounces.

**Example:** Assign a label to the **weight on the scale below**. Convert this value from kilograms to grams.

The scale moves a quarter of the distance between 1 kg and 2 kg, so the mass of the weight is 1.25 kg. This is equivalent to 1250 g.

## Functional Skills: Scales Example Questions

**Question 1:** Write the length of the rectangle below.

**[1 mark]**

The rectangle is 5 cm long.

**Question 2: **Write the temperature displayed on the thermometer.

**[1 mark]**

The thermometer shows 15Â°\text{C}.

**Question 3:** Write the volume of fluid in the measuring jug.

**[1 mark]**

The measuring jug contains 250 ml of fluid.

**Question 4:** Give the mass of the weight on the scale.

**[1 mark]**

The weight has a mass of 875 g.