Natural resources

Question 1

What are renewable and nonrenewable resources

Answer 1

Resources that never get exhausted are known as renewable resources example as water solar energy forest wind

Non renewable resources are those which not get replenish for thousands of years and can run out within our lifetime these are precious and must be use with great care and caution

Question 2

How is solar energy and wind energy used

Answer 2

Solar panel convert solar energy to electricity

Windmills convert wind energy to electricity

Question 3

Explain wind energy

Answer 3

Wind
Wind has been a source of energy for a long
time. Improved technology has enabled
humans to harness wind energy to generate
electricity with the help of turbines. When the
wind blows, the large blades in the turbines
turn and generate energy.Wind farms generate
thousands of megawatts of electricity that is
used for various purposes.

Question 4

Water is renewable but we need to save water,why?

Answer 4

Though 71% of earth is covered is water and it is a renewable energy , water in its natural form is not potable (it is impure) it takes a lot of resource and effort to convert impure water to pure water hence we must save water

Question 5

State some important rivers of India

Answer 5

Ganga Indus Brahmaputra Mahanadi Kaveri Krishna and Godavari

Question 6

How is groundwater formed

Answer 6

Rainwater seeps under the ground till it reaches the Rocky layer where it collects as a pool this water is called groundwater the layer of rocks and area underground and where groundwater collects is called anaquifer groundwater is pulled up by digging well or tube-wells and pumps

Question 7

What is the energy from water called

Answer 7

Hydro energy

Question 8

Soil how is it formed

Answer 8

Soil is a loose material that covers the earth surface it is formed when rocks are broken down by the action of heat water wind and living things soil texture millions of yours to form

Many organisms such as earthworms and rats live in soil .soil is needed for growing plants and it also serves as a raw material for building sturcutes

Question 9

how much percentage of Earth is covered by forest

Answer 9

30 percent

Question 10

Why are forests important

Answer 10

Forest our treasure house of valuable resources. It is estimated that 30% of the Earth is covered by forest. Forests serve as natural air purifiers and a home to a variety of animals and plants they insure regular rainfall, stop floods and prevent soil erosion

Forests serve as a mean of subsistence for many. Tribal and indigenous groups depend on forest for their livelihood. They make a living by selling honey, wood, fruits, rubber or by making goods from materials found in the forest

Question 11

All thing used to satisfy our needs is called__

Answer 11

A resource

Question 12

Loose material covering earth surface

Answer 12

Soil

Question 13

Light and heat from the sun

Answer 13

Solar energy

Question 14

Water collected in underground poles

Answer 14

Groundwater

Question 15

Tubes made by the composition of that organisms over millions of years

Answer 15

Fossil

Fossil fuels are made by the decomposition of dead organisms such as plants and animals over millions of years they are found in Earth crust petroleum and natural gas are some examples of fossil fuels comes from plants while petroleum and natural gas comes from microorganisms such as algae

Question 16

The hard black substance which can be burnt

Answer 16

Coal is a hard black substance found in nature it is going to be used as fuel earlier called we’ve used in steam

Question 16

The hard black substance which can be burnt

Answer 16

Coal is a hard black substance found in nature it is going to be used as fuel earlier called we’ve used in steam engines . today it is used as fuel for cooking food ,to generate electricity in thermal plants and industries as fuel

Question 17

How is coal formed

Answer 17

4 dinosaurs many joint plant died in Earth’s swamps 30 million years ago

Millions of years the plants for buried under the water and dirt 10 million years ago

Heat and pressure has turned the dead plant matter into coal

Question 18

A large body of Fresh flowing water

Answer 18

River

Question 19

A green or black liquid found under the earth

Answer 19

Petroleum/oil

Petroleum/oil green or black liquid found deep under the earth and under the floor of the oceans like coal it is an important source of energy. fuel such as petrol, diesel, kerosene and cooking gas comes from petroleum

Question 20

A fuel used for generating power in a compressed form

Answer 20

Natural gas
Is created along with petroleum it is an odour less colourless non toxic fuel
in its compressed form natural gas is used for generating power
it is used as fuel in automobiles and it is also used in homes for cooking