# Blog

## Convert this – a quick quiz

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By Fiona Midson and Beth Askham

Here is a quantifying quiz for you to gauge! Answer these questions to see if you measure up.

### #1. The height of a horse is measured in a unit called hands. In centimetres, what is the length of a hand?

A hand is 4 inches or 10.16 centimetres.

### #2. What unit of length is equivalent to approximately 3.26 light years?

A parsec is about 3.26 light years. The term comes from how the distance is measured. It’s the distance at which a star would have a parallax of one arc second.

### #3. What mineral has a hardness of 1 on Mohs scale?

Talc has a hardness of 1 on Mohs scale, which means it’s actually very soft. Diamond is at the other end of the scale with a hardness of 10.

### #4. What does a sphygmomanometer measure?

A sphygmomanometer measures blood pressure, typically in millimetres of mercury (mm/Hg).

### #5. Which of the following is not a unit of measurement included in the International System of Units (SI)?

When it comes to mass, the kilogram is the SI unit. There are about 2.2 pounds in a kilogram.

## Results

Congratulations! You are a real science whiz!

Oh dear! Better brush up before the next quiz!

If you’re after more fun science for kids, subscribe to Double Helix magazine!

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