some notes on chapter water of class 7th
Answers
Answer:
Water Class 7 Notes Social Science Geography Chapter 5. 3/4th of earth's surface is covered by water, so the earth is called the blue planet. The sun's heat causes evaporation of watervapour. ... The process by which waterchanges its form and circulates between oceans, atmosphere and land is known as the water cycle.
HOPE YOU UNDERSTAND
PLZZ MARK THIS ANSWER BRAINLIEST
Answer:
Water is a colorless and odorless substance found all over Earth. Water is made up of billions of molecules. Each molecule is made of one oxygen and two hydrogen atoms held together by strong covalent bonds.
Water is found in three different forms on Earth – gas, solid, and liquid. The form water takes depends on the temperature. Water on our planet flows as liquid in rivers, streams, and oceans; is solid as ice at the North and South Poles; and is gas (vapor) in the atmosphere. Water is also underground and inside plants and animals. All living things need water in some form to survive on Earth. People can go weeks without food, but can live only a few days without water.
Water is an important resource with many uses including food production, cleaning, transportation, power generation, recreation, and more.
Explanation: