Monday, November 9, 2020
Tuesday, November 3, 2020
Sunday, October 18, 2020
Tuesday, October 6, 2020
Water conservation and green culture
WATER CONSERVATION
Water conservation is the practice of
using water efficiently to reduce unnecessary water usage.
·
water conservation is important because fresh
clean water is a limited resource, as well as a costly one.
·
Water conservation includes all the policies,
strategies and activities to sustainably manage the natural
resource of fresh water, to protect the hydrosphere, and to meet
the current and future human demand.
GOALS
the
main goal of water conservation is
1.
To restore sustainability and
2.
To conserve energy and natural habitats.
OBJECTIVES
REASONS TO CONSERVE WATER
Below are some of the main reasons it is important to
conserve water.
1. It minimizes the effects
of drought and water shortages.
Even though our need for fresh water sources is always
increasing because of population and industry growth, the supply we have stays
constant. Even though water eventually returns to Earth through the water
cycle, it's not always returned to the same spot, or in the same quantity and
quality. By reducing the amount of water we use, we can better protect against
future drought years.
2. It guards against rising
costs and political conflict.
Failing to conserve water can eventually lead to a lack of
an adequate water supply, which can have drastic consequences. These include
rising costs, reduced food supplies, health hazards, and political conflict.
3. It helps to preserve our
environment.
Reducing our water usages reduces the energy required to
process and deliver it to homes, businesses, farms, and communities, which, in
turn, helps to reduce pollution and conserve fuel resources.
4. It makes water available
for recreational purposes.
It's not just swimming pools, spas, and golf courses that we
have to think about. Much of our freshwater resources are also used for
beautifying our surroundings—watering lawns, trees, flowers, and vegetable
gardens, as well as washing cars and filling public fountains at parks. Failing
to conserve water now can mean losing out on such uses later on.
5. It builds safe and
beautiful communities:
Firefighters, hospitals, gas stations, street
cleaners, health clubs, gyms, and restaurants all require large amounts of
water to provide services to the community. Reducing our usage of water now
means that these services can continue
STRATEGIES
FOR WATER CONSERVATION
The following strategies can be adopted for conservation of water:
1. Decreasing
run-off losses:
Huge water-loss occurs due to run-off on most of the soils, which
can be reduced by allowing most of the water to infiltrate into the soil. This
can be achieved by using
a)contour cultivation
b) terrace framing
c) water spreading
d) Conservation-bench terracing
e) Chemical treatment.
(a) Contour cultivation:
On small furrows and ridges across the slopes trap rainwater and allow more time for infiltration. It is applicable on relatively short slopes up to about 8 percent, steepness with fairly stable soils. By planning across the slope, rather t up and down a hill, the contour ridges slow or stop the downhill flow of water, water is held in between these contours, thus reducing water erosion and increasing soil moisture.
(b) Terrace farming:
Terracing constructed on deep soils has large water-storage capacity. On gentle
slopes trapped run off is spread over a large area (for better infiltrations).
Terraced fields decrease erosion and surface runoff, and are effective for
growing crops requiring much water, such as rice.
(c) Conservation-bench
terracing:
It involves construction of a series of benches for catching the run off
water’s.
(d) Water
spreading:
Water spreading is done by channelling or lagoon-levelling, in Channelling,
water flow is controlled by a series of diversions with vertical intervals. In
lagoon levelling, small depressions are dug in the area so that there is
temporary storage water.
(e) Chemical wetting agents (Surfactants):
These seem to increase the water intake rates when added to normal irrigated
soiled) Surface crop residues, tillage, mulch, animal residues etc. help in
reducing run-off by allowing more time for water to penetrate into the land’s)
Chemical conditioners like gypsum (CaS04.2H20) when applied to sonic soils
improve soil permeability and reduce run off.
2. Reducing evaporation losses:
This is more relevant in humid regions. Horizontal barriers of asphalt placed below the soil surface increase water availability and increase crop yield by 35-40%. This is more effective on sandy soil but less effective on loamy sand soils.
A copolymer
of starch and acrylonitrile called ‘super slumber’ has been reported to absorb
water up to 1400 times its weight. The chemical has been found to be useful for
sandy soils.
3. Storing water in soil:
Storage of water takes place in the soil root zone inhumed regions when the
soil is wetted to field capacity. By leaving the soil fallow for one season
water can be made available for the crop grown in next season.
4. Reducing irrigation
losses:
(a) Use of lined or covered canals to reduce seepage.
(b) Irrigation in early morning or late evening to reduce evaporation losses.
(c) Sprinkling irrigation and drip irrigation to conserve water by 30-50%.
(d) Growing hybrid crop varieties with less water requirements and tolerance to
saline water help conserve water.
(e) Leave some ground idle and apply the saved water to high- value crops.
(f) Use soil-moisture monitoring equipment to measure how much moisture is in
the soil.
(g) Know each crop’s tolerance of drought stress and irrigate accordingly.
5. Reuse of water:
(a) Treated wastewater can be used for ferti-irrigation.
(b) Using grey water from washings, bath-tubs etc. for watering gardens,
washing cars or paths help in saving fresh water.
6. Preventing wastage of
water
This can be done in households, commercial buildings and public places:
(a) Closing taps when not in use.
(b) Repairing any leakage from pipes.
(c) Using small capacity flush in toilets.
7. Increasing block
pricing:
The consumer has to pay a proportionately higher bill with higher use of water.
This helps in economic use of water by the consumers.
ADVANTAGES OF
WATER CONSERVATION
1) saving money
2) Saving environment and energy
3) protecting the drinking water resources
4) reduce or minimize the pollution and health problems
5) reduce the need for new waste water treatment facilities
6) save the aquatic environment
7) save the energy which is required for heat, treat and pumping the water
8) Conserving water can also be helpful during emergency cases such as drought,
water contamination or mechanical failures.
GREEN
CULTURE
Green culture may be defined as a lifestyle of making deliberate choices
and decisions regarding the resources used for daily living for the purpose of
minimizing resources used or to use resources that are renewable.
PRACTICAL SUGGESTIONS
FOR INTEGRATING GREEN CULTURE
·
Discourage the use of plastic bottles
·
Encourage the use of reusable ones that can be washed out
and used again.
·
Put a bike rack at a convenient and safe location to
encourage people to use greener modes of transportation.
·
Invest in eco-friendly technology
·
Recycle everything
·
Try to cut out plastic
·
Fix it, don’t throw it
·
Repairing or fixing something is more environmentally
friendly than simply throwing things away
Thursday, September 24, 2020
DIGITAL LESSON PLAN - PART 1
DIGITAL LESSON PLAN
Basic Information
Name
of student teacher : Sreelakshmi A School
: Model School Thycad
Subject : basic science Class : 8
Unit : Sound Time
:
Topic. : Characteristic
Of
Sound Period :
Strength :
PART 1
CURRICULAR
OBJECTIVES
·
Through actively listening
to various sounds and recorded audio, students will able to understand and
apply characteristic of sound in daily life.
·
Through actively observing
video, victors class, images, tabulation, analysis, discussion of daily life
experiences and internet browsing students will able to apply characteristics
of sound in daily life.
LEARNING OBJECTIVES:
●
To
make the students able to listen virtual form of sound experience through
online
●
To
list the variety type/ various form of
sound
●
To
find out more variety of sound through internet browsing
●
To
find out more variety of sound through actively listening to surrounding
●
To
compare the differences between male and female sound
●
To
compare the differences between sound produced by various musical instrument
●
To enable students understand various
characteristics of sound
●
To Develop an interest
in active listening of sounds
●
To Develops an interest to
distinguish between loudness and pitch of sound
●
To Develop a skill in active
observation.
●
To Develop interest in
thinking about reasons of different sound
PART 2
HARD WARE RESOURCES NEEDED
●
Computer
●
LCD projector
●
Speaker
●
Internet connection
●
Mobile phone
SOFTWARE RESOURCES NEEDED
●
Ms power point
●
Ms word
●
Google chrome
●
VLC player
●
YouTube downloader
●
Google meet
●
Whiteboard application
●
Audio editor (mp3 cutter)
●
Video editor (in shot)
PRINTOUT MATERIALS NEEDED
●
8th text book
●
Pdf of notes
INTERNET RESOURCES
·
https://youtu.be/ZTsLLBo8lNQ
·
https://youtu.be/_VoqI6j4kaU
TYPES OF MEDIA EFFECTS
●
Text
●
Animation
●
Video
●
audio