A narrow valley with steep sides is known as ________________.
A. Gorge
B. Canyon
C. Waterfall
D. Landslide
The largest brackish water lake situated in Asia is in Orissa. Which is the lake?
A. Chilka lake
B. Vembanad lake
C. Woolar lake
D. Dal lake
Succession initiated on large sand deposits or deserts is called _________________.
A. Hydrosere
B. Psammosere
C. Xerosere
D. Oxylosere
_______________ energy is the energy stored within the earth.
A. Geothermal
B. Mechanical
C. Wind
D. Thermal
_______________ is a source of all minerals.
A. air
B. water
C. wildlife
D. soil
The gas that shows the most variation from place to place and from time to time in the lower atmosphere is _________________.
A. Ozone (O3)
B. Carbon dioxide (CO2)
C. Water vapor (H2O)
D. Methane (CH4)
E. Argon (Ar)
The lowest temperature that can be attained by evaporating water into the air is known as the ________________.
A. Heat index
B. Minimum temperature
C. Wet-bulb temperature
D. Frost point
E. Wind chill temperature
India is primary centre of domestication of ________________.
A. Sheep
B. Goat
C. Water Buffalo
D. Elephants
Frost forms when ________________.
A. Objects on the ground cool below the dew point temperature.
B. The dew point is 32oF or below.
C. Water vapor changes into ice without first becoming a liquid.
D. All of the above
The most abundant greenhouse gas in the earth’s atmosphere is ________________.
A. Carbon dioxide (CO2)
B. Nitrous oxide (N2O)
C. Water vapor (H2O)
D. Methane (CH4)
E. Chlorofluorocarbons (CFCs)
