Question # 1

The largest source of light is.

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Sun

Moon

Stars

Plants

We can save eenrgy.

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1- By increaisng personal vehicles.

2- By making vehicles of beavier bodies.

3- By not walking

4- By avoiding unnecessary of energy.

In Brazil, most of the vehicles run with:

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petrol

Bio gas

Alcohol

CNG

The Si unit of energy :

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meter per second

meter

joule

kilowatt hour

The part of atmosphere where all living bodies reside is:

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8 to 20 kilometers

8 to 40 kilometers

8 to 30 kilometers

2 to 10 kilometers

Organic material and their residues are called:

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Biomass

Nuclear waste

Smog

Garbage

The Si unit of power is;

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Joule

Ohm

Watt

Ampere

Prodcut of forces and distance is called.

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Work

Energy

Power

Heat

The part of atmosphere where all living bodies reside is................ thick.

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4 to 10 km

6 to 18 km

8 to 20 km

10 to 20 km

By burning fossil fuels we get.

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Solar power

Tidal power

Nuclear power

Thermal power

Natural gas is measured in:

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square meter

cubic meters

Btu

B and C both

The production of electricity from tides of water is called:

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Wind power

Thermal power

Tidal power

Nuclear power

Energy possessed bu a body due to its motion is known as:

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Kinetic energy

Heat energy

Electric energy

Chemical

The practically unit of electricity is;

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kilowatt hour

watt

Joule

Ampere

Cause of air pollution is.

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Carbon Monoxide

Sulphur di oxide

Nitrogen oxide

All of them

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