Science of Materials - Glass KS2
What is glass made from?
Glass is made from sand or silica, mixed with a some other chemicals to make it stronger or give it colour.
Sand
Dirt
Wood
Animal bones
What properties does glass have?
Glass is hard, waterproof and usually transparent, making glass ideal for windows!
What else can glass be used for?
What else can glass be used for?
It is hard
It is waterproof
It is transparent
All of these (and more!)
What does translucent mean?
Translucent means that you can see some light passing through an object, but not clearly, like these translucent jellyfish.
Something is see-through - like a glass window.
Something that lets some light through it, but you can't see through it - like a plastic milk bottle.
Something doesn't let light through it - like a brick wall
Jellyfish
Is glass brittle?
Glass is brittle, which means it breaks into pieces if it hits something.
Can you think of any other brittle materials?
Can you think of any other brittle materials?
Yes
No
Which of these objects is a light source?
The sun is a light source, the mirror and moon reflect light from the sun and the window lets light through.
Window
Sun
Mirror
Moon
Tick the correct statement about how light travels.
Light travels in straight lines. This is why we have shadows, as light can't travel round corners or pass through solid, opaque objects.
Light travels through a window in straight lines
Light travels through a window in a wavy line
Light can't travel through a window
Which of these is a correct statement about states of matter?
Liquids are always hot
Solids melt into liquids when they are heated
Gases form when solids get cold
Gases form into solids at high temperatures
Is it easy to recycle glass?
All glass is recyclable. It takes much more energy to make new glass than to recycle glass.
First the glass is collected by your local council recycling service, then it is sorted from other materials and sent to a glass recycling plant. There it is chipped up into glass fragments called cullet, sorted using light into different colours and then sent off to be melted and formed into new bottles or jars.
First the glass is collected by your local council recycling service, then it is sorted from other materials and sent to a glass recycling plant. There it is chipped up into glass fragments called cullet, sorted using light into different colours and then sent off to be melted and formed into new bottles or jars.
No
Yes
Can glass be reused?
Even better than recycling glass is reusing it first. Maybe you could use it as storage, or make jam or chutney and put it in old jars. Glass can be upcycled into lovely chandelier style lampshades or pretty vases. The ideas are as endless and creative as your imagination!
Yes
No
Have you learnt anything about glass?
No
Yes
You got {number correct}/{number of questions} correct answers