FLASHCARDS OF S. S. T CHAPTER ONE

Differentiate between groundwater and surface water.

Groundwater us hidden under the soil. People access it using wells, handpump, tube well..

Surface water is visible in rivers, lakes, ponds.

It comes from rain, melting snow, natural springs.

Describe the water cycle and explain its importance for all living beings.

The water cycle is the continuous movement of water between the earth and the sky. It has four stages-

1) EVAPORATION 2) CONDENSATION

3) PRECIPATION 4) COLLECTION

IMPORTANCE-It provides a continuous supply of freshwater for all living beings to drink and help regulate the earth's temperature

Explain the difference between natural sources and man-made sources.

Natural sources-

These are provided by nature.

Eg-rivers, lakes, oceans, rain 🌧.

Man- made sources-

These are created by humans to store or reach water.

Eg-Dams, canals, well, handpump.

Discuss the roles of canals and dams in irrigation and electricity generation.

Irrigation-Dams store large amout of water.

Canals-they are then used to carry this stored waterto dry farmland that are farway from rivers.

Electricity generation-In a dam water is made to fall from height onto large fans called turbines. this movement generates hydroelectricity.

Describe the distribution of water on earth and explain why freshwater is limited?

About 71% of the earth”s surface is covered with water. But it”s not all usable. 97% is salty water found in oceans and seas. Only 3% of freshwater can be used directly and are found in rivers…

WHY IT IS LIMITED - most 3% of freshwater is locked away in glaciers or hidden in the ground. Only fraction is available in rivers and lakes for our daily use.

Explain watershed management and how it helps farmers, animals, environment.

WATERSHED MANAGEMENT - is the process of conserving soil and water in a specific area to prevent wastage and improve the land.

For farmers - it recharges groundwater and ensure there is enough water for cropscrops whole year.

For animals-It provides more greenary for grazing and reliable source for drinking water..

For the environment- It prevents soil erosion, redusmces risk of floods, help moremore trees grows.