Thames & Kosmos Barbie Plant Science Kit: Science at the Farm handleiding

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Handleiding

Soil Absorbs Water

EXPERIMENT

In this experiment, you will learn about

the soil pellets and get them ready for

planting.

You will need: soil pellet, measuring cup,

plastic cup, water

Place one soil pellet in a plastic cup

(or other container that can get dirty).

Add one full measuring cup of water.

The markings on the side of the

measuring cup help you measure the

volumes of substances in the cup.

Wait ten minutes. Observe what

happens to the soil pellet.

If the soil pellet is not completely

expanded aer ten minutes, add

some more water.

10 Minutes

WHAT’S

HAPPENING?

The soil pellet soaks up water and expands. From the

tightly compressed pellet, you get loose soil that you can

use for planting. Plants need water to grow, and soil can

hold a lot of water! Your soil pellets are made of ground

and compressed coco ﬁbers. These ﬁbers are extracted

from the shells of coconuts.

Most poing soils are made of peat, which comes from raised

bogs. These are unique habitats for many rare animal and plant species. Every

year, huge quantities of peat are mined, which destroys the raised bogs!

Peat-free poing soils are now widely available. They are made of compost or

wood ﬁbers. You can help protect the bogs and the animals and plants that

live there by using peat-free poing soils.

Bog

Removing peat

from a bog

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