Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids
Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids
Natural Sciences and Technology Grade 5-B ... - Thunderbolt Kids
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2. Shale is made from grains of clay that are cemented together.<br />
Shale is quite soft <strong>and</strong> you can use it to write with, like a piece<br />
of chalk.<br />
3. Limestone is made of layers of shells of sea-animals that died<br />
<strong>and</strong> sank to the bottom of the sea. Other kinds of limestone<br />
are made from sea-water evaporating.<br />
3.2 Uses of sedimentary rock<br />
You just saw that there are dierent types of sedimentary rocks.<br />
These rock types are used in dierent ways.<br />
Limestone<br />
Limestone is avery common sedimentary rock <strong>and</strong> it has many<br />
uses, mostly as building materials.<br />
Limestone is cut into blocks <strong>and</strong> used in buildings. Look at these<br />
pictures below of dierent buildings made from limestone.<br />
Can you see the blocks oflimestone<br />
in this building?<br />
8<br />
This old building is made from<br />
limestone blocks <strong>and</strong> looks like it<br />
can withst<strong>and</strong> anything.<br />
Limestone is crushed <strong>and</strong> used to make cement. Limestone is<br />
often used in sculptures as it can be carved easily.<br />
Chapter 3. Sedimentary rocks<br />
9<br />
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