TEST OF SCIENCE

Instrument used to measure air pressure.

• Rain guaze

• Hygrometer

• Barometer

Amount of water vapour in present in atmosphere

• Pressure

• Humidity

• Rain

Hygrometer measures

• Humidity

• Temperature

• Air pressure

The study of weather is called

• Climatology

• Meteorology

• Geology

In which is the outer core found?

• Solid

• Liquid

• Plastic

The thicknesses of mantle is:

• 2900 km

• 2100 km

• 1300 km

Innermost part of the earth is:

• Outer core

• Inner core

• Yolk

Polar diameter of the earth is:

• 12713 km

• 12756 km

• 12137 km

Percentage of nitrogen in air is:

• 78.07 %

• 20.98 %

• 87.78 %

......... helps in burning.

• Oxygen

• Helium

• Nitrogen