The air is a mixture of gases.

It contains Nitrogen, Oxygenand other Gases.

The atmosphere is a blanket of air which covers and protectsthe Earth from radiation and cold space.

The atmosphere has 5 layers: Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere.

It is the upper layer of the atmosphere.

It is where astronauts orbit the Earth.

It is the coldest layer of the atmosphere

It is where aeroplanes fly.

It is where the weather occurs.

It is the degree of heat or cold.

It is moving air.It is caused by differences

in air pressure.

It is the amount of water vapour in the airIt is a type of

water precipitation

It contains thunder and lightning.

A lightning is a flash of electricity.

It is a heavy fallof snow.

They occur afterheavy rain, when snowmelts or river rises.

They occur when thereis very little rain for a

long time.

We use a thermometerto measure temperature.The mercury expands orcontracts when it’s hot

or cold.

We use a rain gauge tomeasure rainfall.

It is an open-ended tubethat collects rain.

We use the anemometerto measure wind speed

and direction.

We use a rain gauge to measure watervapour in the air.