Page 50 - FOUNDATIONS FOR LIFE; EXPLORING GOD’S UNIVERSE

Science - Y5 – God’s Amazing Matters – week 8

Cut out the following and create your own newspaper about glass. Add more information and
pictures of your own if you wish.

Glass was made 4,000 years ago. It does not fit into

Glass is made by other categories of materials so has a category of

combining sand, soda and its own.

lime. Other substances are

added to some glass, eg

potash, magnesia, alumina

and various oxides. Glass is hard, dense, transparent and
brittle. It has no pores so gases and liquids
do not percolate through it. Cold glass is a
poor conductor of heat and electricity. It
doesn’t react with acids and alkalis so is a
useful container.
Glass can be recycled again and

again. Coloured glass should be

separated into colours so we

have different recycling bins. When light passes through, it bends

slightly. This is called refraction.

Glass surfaces can be coated in metal but we can still see through them. Sunglasses

and camera lenses are made in this way.

The Space Shuttle has 37
Light bulbs are triple-glazed window Glass can be blown into
made of glass. shapes or poured into
They are blown panes. A space station moulds. Tubes and rods are
into shape at high has hundreds. They have made for thermometers.
speeds, even 30 to withstand very high Making lenses is a very
seconds. temperatures. delicate process.

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