Making moon rocks

Chocolate breccia

You will need:

• A bar of chocolate
• Some M&Ms

Place a tray where you want your chocolate moon crust to be.

Break up the chocolate into small chunks in a bowl and tip your M&Ms on top. This is what the earth's crust is like - lots of different rocks.

To imagine that another planet collided with it, ask a parent to heat up the bowl until the chocolate melts, like molten rock.

Give the bowl a good mix to simulate the explosion - but be careful because it will be hot.

Tip your mixture onto your moon tray and let it cool down. When it is cold it will go hard again, like a rock. This is now your moon crust.

To imagine that an asteroid hit it, break some pieces off. If you look you will see your M&Ms surrounded by chocolate. This is like your different rocks all melted together.

Congratulations! You've just made chocolate breccia.

Candy basalt

You will need:

• 100g caster sugar
• 2 tbsp golden syrup
• 1 tsp bicarbonate of soda

Butter a baking tray and place it where you want your lava lake to be.

With a parent, heat up the sugar and golden syrup in a pan until it has melted. This is your molten rock.

Simmer until it starts to go a little darker - we want it to look like basalt.

To imagine the asteroid collision, add your bicarbonate of soda and mix. Watch it erupt!

Pour your lava into your lava lake baking tray and let it cool down. It will go as hard as rock again.

To imagine that an asteroid hit it, break it into pieces. If you look you will see lots of gas holes in your lava.

Congratulations! You've just made candy basalt.

How much of each rock type did you have?

Why not put some chunks of both rock in a bag, as if you were an Apollo astronaut collecting samples from the moon?

Perhaps you could make a bar chart of the rocks you collected.