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7/28/2019 Variety Resources F1

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Submarine has ballast tanks

that can be emptied or filled

with water to control the depth

of the submarine in the water.

Air is less dense than waterBy changing the amount of

water in the ballast tanks, asubmarine can rise or sink in

water.


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Plastics balls and metal

spheres are attached to fish

net so that the nets can stay a

float in water.

Why?

Air is less dense than water.

Metal is denser than water.


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Helium or Hydrogen is used in

meteorological balloons.

Why?

Helium or Hydrogen is lessthan air.


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Floats filled with air can help

people swim

Why?

Because air is less dense than

water


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GAS LIQUID

At high pressure,

Gas turns to

Liquid

At low pressure,

Liquid turns toGas


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DISCUSSION


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1 RKCIK ADYANI AHMAD


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List down any resources on Earth that youcan think of?

Walking walkingwalking andyou found?


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Soil

Water Living things Fossils

Minerals

Air


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A layer of Air known as atmospheresurrounds the Earth

Air consists of :-

- oxygen- nitrogen- carbon dioxide

- water vapour- inert gases- dust

- microorganisms


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Human, animals and plants cannot survivewithout water.

Sources:-

OceansSeas

Rivers

Lakes

Rainfalls

Groundwater


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Soil is the outer layer of the Earth. Soil is commonly seen as a medium that supports

plant growth.

Soil includes:- Organic litter such as fallen leaves, twigs, fruits and

animal droppings and carcasses on the soil surfaces

Humus formed from decompositions of the organic

litter

Microorganisms living in the soil.


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Green plants make their own food. Green plants use light energy from the Sun to

make their own food through a process called

PHOTOSYNTHESIS. Aquatic plants and animals on Earth are considered

as resources on Earth.

Plants grow and animals live for human to sustaintheir own life too.

For FOOD.


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Minerals occur naturally on land, seas and oceans. Some examples are :-

Iron

Zinc Aluminium

Tin

Silver Gold


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Minerals are important in human body. Minerals are needed for human system to function

well.

Minerals are also required by plants for healthygrowth.

Some minerals are useful as raw materials for

various industries. (Eg: Gold and Silver)


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Fossil fuels are formed from the remains of animalsand plants that died in millions of years ago.

There are 3 types of fossil fuels :-

PetroleumNatural gas

Coal

Fossil fuels are used in power stations to generateelectricity, motor vehicles and machines. Petroleum is separated into different parts known

as FRACTIONAL DISTILLATION

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