The microphone is connected to an
Amplifier
The particles are very close together.
Solid
Water changes state when it is
heated and cooled
The temperature at which a substance melts is its
melting point
Solid to Liquid
Melting
The amplifier is connected to the
the particles are closely packed but further apart than in solids.
Liquid
If we heat water enough, it will
boil.
The temperature at which a substance boils is its
boiling point
Liquid to Gas
Evaporation
Give me 2 examples of a stringed instruments
Guitar, violin and ukulele
The layer of air that surrounds the Earth is called the
When water boils it forms bubbles of a gas called
steam
When we heat ice, it melts to form
liquid water
Pollutions came from where?
factories, power stations, cars, trucks and aeroplanes into the air.
The microphone, the amplifier and the loudspeaker make a
Sound System
ir also contains a gas called
Water Vapour
The amount or heat in a substance is called the
temperature
happens because some particles in the liquid gain heat energy.
Evaporation
States of Matter
Solid, Liquid and Gas
Loud sounds can hurt our ears. Some people work in very noisy places. They need to protect their ears. They wear __________________.
Ear defenders or Ear defenders muffle sound
A gas called __________ makes up about four-fifths of the air.
nitrogen
We measure temperature with a
thermometer
We measure temperature with a thermometer. The unit we use is
degrees centigrade
It is also important for us to have clean air to breathe. People put
smoke, dust and gases