Atmosphere Class 9 Questions and Answers Pdf - 1

Question: 1

Hurricanes are cyclonic storms in the ____

(A) Indian Ocean

(B) Atlantic and Eastern Pacific Ocean

(C) West Pacific Ocean

(D) South China sea

Question: 2

Humidity of the atmosphere is measured by ______

(A) Anemometer

(B) Windvane

(C) Thermometer

(D) Hygrometer

Question: 3

The weight of water vapour per unit weight of air is _____

(A) Absolute humidity

(B) Specific gravity

(C) Relative humidity

(D) None of the above

Question: 4

Which of the following occurs more frequently than the other three in the Indian ocean

(A) Cyclones

(B) Hurricanes

(C) Tornado

(D) Typhoons

Question: 5

The wind blows from land to sea during the night, this is called as

(A) Mountain breeze

(B) Valley breeze

(C) Land breeze

(D) Sea breeze

Question: 6

Atmosphere is divided into two main vertical regions the upper portion is Heterosphere and the lower is

(A) Homosphere

(B) Mesosphere

(C) Troposphere

(D) None of these

Question: 7

Increase in carbon dioxide in atmosphere causes _____

(A) Increase in ultra violet rays

(B) Uniform earth's temperature

(C) Fall in earth's temperature

(D) Rise in earth's temperature

Question: 8

_____ clouds are called Sheep clouds.

(A) Alto-Stratus

(B) Alto-cumulus

(C) Nimbo-Stratus

(D) Cirro-stratus

Question: 9

The _____ is the chief energy source of the Earth.

(A) Clouds

(B) Stars

(C) Moon

(D) Sun

Question: 10

Dew in the form of ice crystals is called _____

(A) Sleet

(B) Mist

(C) Fog

(D) Frost