An air mass coming from the North Pole will be cold and dry, so if it moves over the UK you'll get cold dry weather. An air mass coming from warm ocean will be warm and dam, and if it moves over the UK you will get warm dampish weather.Often, two different air masses will meet and clash and this causes sudden changes in the weather.

A Warm Front means a warm air mass is arriving.

A Cold Front means a cold air mass is arriving.

Distance from the coast. the sea is cooler than the land in summer, and warmer in winter. So the sea breeze keeps the coast cool in summer- and warm in winter.

Prevailing wind direction. For example in the UK the prevailing wind is from the south west. It brings water vapor from the ocean- and that means rain.

Ocean currents. For example a warm ocean current called north Atlantic Drift warms the west coast of the UK winter, the the warming wind.

Height above sea level. Or Altitude. The higher you are above the sea level, the cooler it is. The temperature falls by about 1 Degres Celsius for every 100 meters.

Weather is the state of the atmosphere around us. (Warm,Wet, Windy). It can change from hour to hour.

The main causes of weather are the sun, and water vapor.

Climate is the average weather in a place- what is usually like there

Climate changes from place to place, because of the factors such as distance from the equator, and from sea

Hailstones

Sleet

Snow

The sun

Water vapor

The earth travels non stop around the sun. It is tilted as it travels. And that's why the climate in different places can be so different, in different months. The tilt gives our planet seasons.

Although we can't feel it all the air above is pressing down on us, giving air pressure. If air pressure if LOW,it means that the air is rising. If it is high it means that the air is sinking. And each brings a different weather

CONVECTIONAL RAINFALL- The air rises because the ground heats it up. it rises as currents of warm air. We call these Convection Currents. So we call the rain Convectional Rainfall.

RELIEF RAINFALL- Wind is moving the air. When the wind meets a line of high hills or mountains there's only a way to go up! We call this Relief Rainfall.

FRONTAL RAINFALL- As you can imagine, huge blocks of air call air masses move around the earth. When a warm air mass meets a cold one, the warm air is forced to rise.So we get rain. This is called Frontal Rainfall.

meteorologic or weather scientists use data to write weather reports, and draw weather maps, and make weather forecast.

DEF- Weather is the state of atmosphere at a given time. You can tell a lot about it just by looking.

Cumulus Clouds- They are usually the result of warm air rising fast. for example when the ground heats up the air quickly on a hot day, or air rises at the side of a mountain.

Stratus Clouds- They are the result of air rising more slowly, over the wide area. For example when a warm air mass slides up slowly over a cold on, leading to frontal rain.

Cirrus Clouds- They are usually the sign that warm front is arriving.

Thermometer

Anemometer ( wind turns the cups which turns a counter).

Barometer

Wind Vane

Rain Gauge

Visibility Meter ( a beam of light is sent out and a sensor measures how much arrives).