Page 164 - DK Children's Encyclopedia

Metals SEE ALSO

▸ ▸ Bicycles p.36
▸ ▸ Elements p.90
We find metals in rocks. Metals can be strong or bendy, ▸ ▸ Iron Age p.140
and they let electricity pass through them. These features ▸ ▸ Liquids p.148
are useful for making many things, from wires to buildings. ▸ ▸ Magnets p.151

Metals can be used on their own or mixed together. ▸ ▸ Meteorites p.164

The ancient
Bicycle basics Egyptians made
A bicycle is made from a things out of iron
combination of strong and bendy from meteorites,
metals. The type of metal used which had fallen
for each part depends on what it from space.
needs to do.

Brake levers
Wheel rims are A strong titanium frame are made of
crafted from does not rust. long-lasting
sturdy steel. aluminum.

Steel spokes The chain is made Pedals are made
support the from flexible of hardwearing
wheel. carbon steel. aluminum.

Metal from mines
People dig tunnels underground
to find metal in places called
mines. Usually, the metal found
in mines is not pure, which
means it has rock and gas mixed
in it. These materials need to be
separated from the metal before
we can use it.

1. Ore 2. Melting 3. Cooling
An ore is a rock that contains The ore is heated to melt and The metal cools into a solid. It
metal. The ore is discovered remove the metal. Chemicals can be heated up and hammered
and dug out of the mine. are added to help remove gases. into useful shapes.

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