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What is Weather, Climate and Factors affecting Climate? Class 7 Science

Weather Climate and Factors affecting climate Class 7 Science

Weather, Climate and Factors affecting Climate? NCERT Class 7 Science

In this article, we will learn What is Weather , Climate , and Factors affecting climate? from class 7 science.


We have come across this word many times. Whenever we plan a holiday or any function we always consider the weather. It has a profound effect on our lives. It is basically a day to day condition of an atmosphere influenced by specific conditions like temperature, humidity, wind speed etc. The 24 hours of weather reports contain temperature, humidity, and rainfall. These are the elements of the weather. Weather changes from time to time. It is a complex phenomenon for example- the morning might be sunny and randomly out of nowhere there can be rainfall. The primary source of energy Sun causes changes in weather.

Constituents of weather

  • Temperature
  • Humidity
  • Wind Speed
  • Rainfall
  • Snowfall
  • Hail
  • Thunder


What is Hygrometer?

It is the amount of moisture present in the air. It refers to water vapors present in the atmosphere. It is measured with the help of hygrometer.


Average weather taken for a long period of time of a particular place is known as climate. For example- if the temperature of any place is high, the climate of that place is hot. Different climatic changes occur every day on different land regions. For example change in temperature and moisture, wind speed and so on. On a specific land region at the specific time – it might be stormy or dry or may be sunny and bright. Climate can be normal or serious.

Learn types of Climate with animated learning modules. Click on Online Class 7 Science for details.

Factors affecting climate

The atmosphere of a place changes when the climatic states of that region change. This progressions matter when they happen more than many years. These are the components that influence climate-

Seal level – when the height of the ocean level changes that is the height above sea level. It affects the climatic conditions. For e.g. when there is a 164-meter increment in height, the temperature falls by 1 degree Celsius.

Sea Distance – Regions that are closer to the sea are cooler as compare to regions away from the sea.

Ocean current – ocean current transfer heat energy from land to sea or vice versa.

Topography – it refers to the shape of a land. The geology of a place affects the temperature.

Winds – the speed of the wind affects the temperature. For example, the winds blowing from sticky regions will drop the temperature.

Human interference – human exploit the natural resources. Human causes artificial climatic changes through activities like deforestation, pollution etc.

Know more Weather, Climate and Adaptation of Animals to Climate

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