Water
H2O
We must save water. True or false
False. jk, true
What is the term for a large body of water surrounded by land?
Lake
How many days can humans live without drinking water?
About 3 days
What is the term for the process by which water vapor turns directly into ice without going through the liquid phase?
Sublimation
Water is used in 3 main categories, what are they?
Industrial, Agricultural and Domestic
Most of the water is used for what purposes?
Agricultural purposes
What percentage of the Earth's surface is covered by water?
71-78%
Why is water crucial for all living things? PS: What role does it play in the organism's body
On a biological level, water's role as a solvent helps cells transport and use substances like oxygen or nutrients. Water-based solutions like blood help carry molecules to the necessary locations. Helps with chemical reactions.
What is the primary source of drinking water for most people worldwide?
groundwater
3 ways in which water can be saved in an average household
What is service reservoir and usually where is it located (give some examples too)
Treated potable water (100 points)
Close to the point of distribution (100 points)
Examples- water towers (100 points)
Define Cistern
A vessel in which water, usually potable, is stored, forming a type of covered reservoir
What is the approximate percentage of water in the human body?
about 60%
Which type of irrigation requires the most amount of water
Hydroponics
10 domestic uses of water
leisure activities, washing dishes, washing clothes, drinking, cleaning, watering plants, bathing, washing car, watering animals + any other valid points
What are the 3 major sources of water pollution?
any from:
The major sources of water pollution include industrial discharge, agricultural runoff, sewage and wastewater, oil spills, and chemical contaminants.
Aquifer water is mostly found in which type of soil?
Clay soil
Define Artesian aquifer
An artesian well is a well that brings groundwater to the surface without pumping because it is under pressure within a body of rock and/or sediment known as an aquifer.
difference between MEDCs and LEDCs.
Just the full forms of both works too
MEDCs --> More economically developed countries
LEDCs --> Less economically developed countries
How to make salt water potable
Desalination
150 points ---> Refer to distillation
200 points ---> Refer to reverse osmosis
4 uses of water in an industrial factory
Cooling, Cleaning and sanitation, steam generation, Manufacturing and processing + any other valid points
Define reverse osmosis
Reverse osmosis (RO) is a water purification process that uses a partially permeable membrane to remove impurities from water. It is a type of filtration technique that relies on the principle of osmosis, but in reverse.
During reverse osmosis, water is typically forced through a specialized membrane that has very small pores. These pores allow water molecules to pass through, while blocking the passage of larger particles, such as dissolved salts, minerals, bacteria, viruses, and other contaminants. The result is purified water on one side of the membrane and concentrated impurities on the other side, which are then flushed away.
(The most basic questions are the hardest)
Define water.
a colourless, transparent, odourless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.
At what temperature does water reach it's maximum capacity?
4 degree celsuis