Natural resources /ICSE 5th class syllabus
-
Upload
indianeducation -
Category
Education
-
view
75 -
download
2
Transcript of Natural resources /ICSE 5th class syllabus
All natural elements that are part of the earth and which humans need and value are called resources
Divided into … 1.Perennial resources 2.Renewable resources 3.Non-renewable resources
Natural resources
Perennial resources sunlight winds Tides
These are always available to us, hence they are called perennial
Natural resources that can eventually get exhausted and can not be replenished are called non renewable resources.
Non renewable resources
Since it takes millions of years for nature to replenish these sources, and it cannot keep up with speed at which we are using them.
Minerals
These are naturally occurring substances that are found in rocks below the earths surface
They are obtained by process called mining
Coal and petroluem
Coal and petroleum are called fossil fuels as they are formed when rocks exert pressure on the remains of dead plants and animals
The burning of fossil fuels causes environmental pollution
A serious effect of environmental pollution is acid rain.
Beware!!!Renewable resources should be used at same speed at which they are replaced
If we keep using them carelessly at the current rate, they will soon become scarce and eventually die out.
Example for Excess of usage of resources
If we keep cutting trees with out replacing them 1.We will loose our forests
2.We will loose soil
3.We will loose our plants and animals living there
1.Land resources
2.Forest resources
3.Water resources
4.Mineral resources
5.Human resources
Natural resources in india
We are largely a land and agriculture based economy.
Due to varied land forms and climatic conditions prevailing in different parts of country, varied soil types have developed in different parts
It is topmost layer of the earth formed by rocks which have broken up and are finally divided and mixed with decayed animal and vegetable matter
Formation of soil is mainly due to breaking down of rocks.
It has taken thousand of years for soil to form, and this process is happening even today
Formation of soil
Reasons for breaking down of rocks are:
Action of sun, wind and rain causes rocks to breakup and crumble
Rocks expand during day when it is warm and contracts in the nights when it is cool. This continuous expansion and contraction of rocks cause them to break into tiny pieces or cause cracks in the rocks
When it rains plants grow trough the cracks of the rocks. This makes cracks wider and help the process of breaking of rocks.
Rains carry soil into streams and rivers and there it becomes part of silt
The wind can blow away some of the soil to other areas
Types of soilBlack soil
Found in Gujarat and Maharashtra
Crops that grow in black soil are cotton,tobaco and ground nuts{cash crops)
Mountain soil
Found in Jammu and Kashmir, Himachalpradesh and Uttaranchal
Crops that grow in mountain soil are fruits like apple peach apricots and flowers
Fine grained fertile soil deposited by water flowing over flood plains or in river beds
Alluvial soil
Found in Punjab, Haryana, Bihar , Uttarpradesh and west Bengal
Crops that grow in Alluvial soil are wheat, rice(food crops) and sugar cane (cash crops)
Fine grained fertile soil deposited by water flowing over flood plains or in river beds
Laterite soil
Found in Kerala, Karnataka, Assam and Tamilnadu
Crops that grow in lateritic soil are tea, coffee and spices(cash crops)
Fine grained fertile soil deposited by water flowing over flood plains or in river beds
Desert soil
Found in Rajasthan
Crops that grow in desert soil are oil seeds(cash crops) jowar, bajra(food crops)
Crops grown in India (food crops)
Rice
Grown in west Bengal, Andhrapradesh, Tamilnadu, Odisha, Assam, Punjab, and Uttarpradesh
Grown in Maharashtra and Rajasthan, Gujarat, Tamil nadu, Karnataka, Odisha, Madhyapradesh, Punjab and Haryana(soyabean, ground nut, sunflower, rape seed, sesame
Oilseeds
Wild life
Tiger is our national animal .Tigers are commonly found in 1. Foot hills of
Himalayas2. Monsoon forests in
central and southern India
3. Sundarban forests in Ganga-brahmmaputra delta
Tiger
Forest resources
India has different kind of forests 1.Tropical evergreen forest(high rainfall) 2.Deciduous forests(high rainfall) 4.Alpine vegetation (mountain slopes)
Perennial rivers
The rivers of northern part of India which receives from the melting of snow of the Himalayas are called perennial rivers
Non perennial rivers
In southern India some rivers are non perennial. They are rain fed and depend on monsoons for water supply
Desert states:
Desert states like Rajasthan and Gujarat depend on neibhouring states for irrigation water
Many multi purpose projects have been built on large rivers to supply water and electricity to different states
Bhakra nangal project
This project is on Sutlej river
It benefits Punjab, Haryana, Himachal Pradesh, Delhi and Rajasthan
Indira Gandhi canal project
Is made on Beas ,Sutlej and Ravi rivers in states of Punjab and Himachal Pradesh. This project benefits some parts of Rajasthan
Iron
Iron is found in odisha, Karnataka , Jharkhand and Chhattisgarh. Iron and steel plants are located in Rourkela, Bokaro and Bhilai
Coal mines
Are located in eastern part of the country in the states of odisha, Bihar and west Bengal
Man power is one of the chief resource that our country has. our vast population is great source of labour which has contributed substantially towards the economic progress of our country
Misuse of non renewable resources takes years to replenish the non renewable sources. There fore, we should try our best to conserve them
Saving fuel resources
Personal cars should be avoided
Avail public transport to save fuel
Regular pollution check should be done