grade 8 geography lesson 1 by Vijaya Nagarajan, Delhi International School

1. RESOURCES
VALUE
UTILITY
TYPESOF
RESOURCES
NATURAL
HUMAN
MADE
HUMAN
CONSERVING
RESOURCES

2. What is a resource?
Anything that can be used to
satisfy a need is a resource
To become a resource, a thing must
have utility and value

3. What do you mean by utility & value?
It is the usability of any object or substance.
It changes from place to place, person to person
and time to time.
A FUR COAT
HAS UTILITY
IN
ANTARCTICA
AND NO
UTILITY IN
AFRICA
A BOOK HAS
UTILITY ONLY
FOR A
PERSON WHO
CAN READ
ARAINCOAT
WOULD HAVE
UTILITY ONLY
IN THE RAINY
SEASON

4. ECONOMIC VALUEUTILITY This means the
worth of a resource.
It changes with time
and need.
Time & Technology change substances into
resources.
A telephone would not have been so useful
in olden times when people lived in large
joint families. But when family members
began moving out for education and
employment, telephones became a resource.
Technology has lead to the use of the solar
energy to generate solar power… thus the
sun has now become an important resource

5. NATURAL RESOURCESRENEWABLE
RESOURCES
NON
RENEWABLE
RESOURCES

6. DISTRIBUTION OF NATURAL
RESOURCES
TERRAIN
CLIMATE
ALTITUDE
Natural resources
are unequally
distributed
because these
factors differ so
much over the
Earth.

7. HUMAN MADE RESOURCES

8. Natural Resources gain utility
and worth only because of
Human Beings. Hence Human
Beings
are the most important resource.
With the help of their skill,
knowledge and technology they
convert natural resources into
human made resources.
SKILL
TECHNOLOGY
KNOWLEDGE

10. Why are human beings the most
important resource
They generate the demand for resources.
They give utility to resources.
Their ideas, knowledge, inventions and
discoveries lead to creation of more
resources

11. HUMAN RESOURCES
Education and Health help to
make people a valuable resource
Improving the quality of people's
skills so that they are able to
create more resources is known
as HUMAN RESOURCE
DEVELOPMENT

12. TYPES OF RESOURCES
TYPES OF NATURAL RESOURCES
Based on
exhaustibility
Based on
development
Based on
distribution
Based on
origin
BIOTIC
ABIOTIC
LOCALISED
UBIQUITOUS
NON
RENEWABLE
RENEWABLE POTENTIAL
ACTUAL
HUMAN HUMAN MADENATURAL

14. ON THE BASIS OF DEVELOPMENT

15. ON THE BASIS OF EXHAUSTABILITY
Those resources which can be
created again and again: wind,
water, solar, wildlife, vegetation
are called renewable resources
Those which will perish and cannot be
replenished.. they can be recyclable
like tin, plastic, metals. And Non
recyclable like crude oil and coal are
called non renewable resources

18. Respect and care for all forms of life
Improve the quality of human life
Conserve the Earth's vitality and Diversity
Minimise the depletion of nature resources
Change personal attitude and practices towards the
environment.
Enable communities to care for their own
environment.

19. OUR DUTIES TOWARDS ENVIRONMENT
Ensuring that uses of renewable Resources are
sustainable
The diversity of life on the Earth is conserved
Damage to Natural Environment System is
minimised
OUR DUTIES TOWARDS ENVIRONMENT

20. OUR DUTIES TOWARDS ENVIRONMENT
Ensuring that uses of renewable
Resources are sustainable
The diversity of life on the Earth is
conserved
Damage to Natural Environment
System is minimised