PowerPoint Presentation for Chapter 5 The Rise of Empires(History)-Class 7 Subject Social Science *************************************** What is an Empire? The word ‘empire’ comes from the Latin ‘imperium’, which means ‘supreme power’. Simply put, an empire is a collection of smaller kingdoms or territories over which a powerful ruler exerts power. The smaller territories still had their own rulers but were all tributaries to the emperor. Features of an Empire Empires extended over vast areas and had diverse people. Emperors allowed regional kings or chiefs to govern their areas. They maintained an army to expand and protect the empire. They had a well-developed administration to collect taxes and maintain order. Emperors issued laws, regulated trade, and maintained infrastructure. They encouraged arts, literature, and education. They controlled access to resources. Communication networks were maintained across the empire. Trade, Trade...
PowerPoint Presentation for Chapter 2-Understanding the Weather-Class 7-Subject Social Science
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Weather
Weather is the condition of the Earth's atmosphere at a particular time and place.
It includes temperature, rainfall, wind, humidity, and air pressure.
Atmosphere:
It is the layer of gases that surround some planets — in the case of our Earth, we call these gases ‘air’.
The Earth’s atmosphere may be compared to a cake with several layers.
The layer closest to the surface of the Earth is called the ‘troposphere’.
We use many words to describe the weather — hot, cold, rainy, cloudy, humid, snowy, windy, and so on.
Elements of Weather
Temperature: How hot or cold the atmosphere is.
Precipitation: Any form of water, such as rain, snow,
sleet or hail, that falls from the sky.
Atmospheric Pressure: The weight of the air above us,
felt on the Earth’s surface.
Wind: The movement of air, including its speed and
direction.
Humidity: The amount of water vapour in the air.
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To download PPTs Click Below:
Chapter 2- Understanding the Weather
Chapter 1- Geographical Diversity of India
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