WorksheetsGrade 9 Composition & Structure
Total questions: 10
Worksheet time: 3mins
Envelope of air that surrounds us is __________and it is held to the Earth by _____________.
Atmosphere , Equity
Atmosphere, Density
Atmosphere, Gravity
The density of air _______ with _______in height.
increases, decreases,
decreases, increase
decreases,decreases
Total mass of air is found on
Earth's interior
Earth's surface
Earth's bottom
Ultraviolet and infrared rays of the sun help in __________ the warmth of the Earth.
increasing
retaining
destroying
____________help in circulation of water vapor.
x rays
sun's rays
UV rays
___________dilutes the oxygen and slows down the process of oxidation.
Helium
Oxygen
Nitrogen
Least % of gases are _______________,______________.
Water vapor
oxygen
Nitrogen
_______________,_____________,_______________are nuclii for water vapor to form raindrops.
water vapor, meteorites, smoke
water vapor, meteorites, stone
water vapor, ozone, smoke
_____________always remains in contact with land and water.
Air pressure
wind pressure
pressure
Large mass of air is moved up and down the Atmosphere . So it is a ________________ entity.
mobile
dynamic
static
