grade 9 natural resources

1. NATURAL RESOURCES
S. PADMANABHAN​

2. AGENDA
NATURAL
RESOURCES
2
INTRODUCTION
WHAT IS NATURAL
RESOURCE ?
WHY ARE THEY IMPORTANT?
BREATH OF LIFE: AIR
THE ROLE OF THE
ATMOSPHERE IN CLIMATE
CONTROL
INTERESTING FACTS

3. INTRODUCTION
NATURAL
RESOURCES
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 These are the land, the water and the air. The
outer crust of the Earth is called the lithosphere.
Water covers 75% of the Earth’s surface. It is
also found underground.
 These comprise the hydrosphere. The air that
covers the whole of the Earth like a blanket, is
called the atmosphere.
 Let us study these abiotic components in detail
in order to understand their role in sustaining life
on Earth.

4. WHAT IS NATURAL
RESOURCES
NATURAL
RESOURCES
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• Natural resources are materials from the Earth that are used to
support life and meet people's needs.
• Any natural substance that humans use can be considered a natural
resource.
• Oil, coal, natural gas, metals, stone and sand are natural resources.
Other natural resources are air, sunlight, soil and water.

5. WHAT IS NATURAL
RESOURCES?
5
NATURAL
RESOURCES

6. WHY ARE THEY IMPORTANT?
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• Natural resources are used to make food, fuel and raw materials for
the production of goods.
• All of the food that people eat comes from plants or animals.
• Natural resources such as coal, natural gas and oil provide heat, light
and power.
• Water is one of the most important natural resources flowing from
forests.
• Soil provides nutrients, water, oxygen and heat to natural land areas.
• Air is a third critical resource for humans, plants, animals and all other
organisms within a natural area.
NATURAL
RESOURCES

7. “IF CONSERVATION OF
NATURAL RESOURCES
GOES WRONG, THEN
NOTHING GOES
RIGHT.”
M.S. SWAMINATHAN
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NATURAL
RESOURCES

8. BREATH OF LIFE: AIR
• Air is the invisible mixture of gases that surrounds Earth.
• Air contains important substances, such as oxygen and nitrogen, that
most species need to survive.
• Human beings (Homo sapiens), of course, are one of those species.
Sometimes, the word "atmosphere" is used instead of the word "air.
• It consists of 78% nitrogen, 21% oxygen and 1 % other gases and
water vapor.
• The composition of air does not change as you travel through the
layers of the atmosphere.
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PRESENTATION
TITLE

9. THE ROLE OF THE ATMOSPHERE IN
CLIMATE CONTROL
• The atmosphere is a protective layer that safeguards the earth from
the harsh conditions of the solar system.
• The air is a poor conductor of heat. During the day, it prevents a
sudden increase in the temperature of the earth and prevents the heat
to escape to outer space during the night.
• It keeps the average temperature of the earth steady.
• Moon has no atmosphere and the temperature ranges from 121°C
during the day to -157°C at night.
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PRESENTATION
TITLE

10. THE ROLE OF THE ATMOSPHERE
IN CLIMATE CONTROL
• The atmosphere protects the earth from the radiation and cosmic rays
coming from outer space. The ozone layer in the earth’s atmosphere
protects the earth from harmful ultraviolet radiations.
• The dense layers of molecular gases absorb the cosmic rays, gamma
rays, and X-rays thereby blocking most of the harmful effects. Tons of
space debris strike the earth every day.
• It is the molecules present in the atmosphere that destroy them before
they reach the ground.
• The water vapors condenses and falls as rain, thereby, providing the
earth with a life-sustaining resource. If there was no atmosphere, the
water would have boiled away into space or would have remained
frozen.
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PRESENTATION
TITLE

11. INTERESTING FACTS
• The U.S. currently accounts for only 4.4% of the world's
population but 18% of the world's total primary energy
consumption.
• Nonrenewable resources, such as coal and natural gas, take millions
of years for the planet to replenish, and renewable resources must be
replaced as they're being used.
• Despite being covered in water, less than 1% of the Earth’s water is
available for human use and consumption.
• The remaining 99% is salt water, is water trapped in ice caps or
glaciers, or is too inaccessible to humans.
• Global water demand for manufacturing is expected to increase by
400% from 2000 to 2050.
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PRESENTATION
TITLE

12. SUMMARY
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Life on Earth depends on resources like soil,
water and air, and energy from the Sun. •
Uneven heating of air over land and water-
bodies causes winds. • Evaporation of water
from water-bodies and subsequent
condensation give us rain. • Rainfall patterns
depend on the prevailing wind patterns in an
area. • Various nutrients are used again and
again in a cyclic fashion. This leads to a certain
balance between the various components of
the biosphere. • Pollution of air, water and soil
affect the quality of life and harm the
biodiversity. • We need to conserve our natural
resources and use them in a sustainable
manner.
NATURAL
RESOURCES

13. THANK YOU
S. PADMANABHAN
GRADE 9|ADARSH VIDYA KENDRA