Snow-albedo is an example of which type of feedback?
a. positive
b. negative
c. run-away
d. formative
e. cumulative
Q. 2 -
Judge the following sentence according to the criteria given below: Land conversion from forests to
cropland results in an increase in biological carbon storage capacity BECAUSE the annual planting
and harvesting of crops involves far more biomass than mature forests.
a. The assertion and reason are both correct, and the reason is valid.
b. The assertion and reason are both correct, and the reason is invalid.
c. The assertion is correct and the reason is incorrect.
d. The assertion is incorrect and the reason is correct.
e. Both the assertion and the reason are incorrect
Q. 3 -
Which isotope ratio is especially important in studying Earth's climate over the past 500,000 years?
a. oxygen-18 to oxygen-16
b. carbon-14 to carbon-12
c. sulfur-34 to sulfur-32
d. nitrogen-15 to nitrogen-14
e. argon-40 to argon-39
Q. 4 -
What is obliquity?
a. tilt of the Earth's axis
b. shape of the Earth's orbit
c. speed of rotation of the Earth on its axis
d. wobble of the Earth's axis
e. planetary alignment
Q. 5 -
Which of the following is NOT a factor cited to explain periodic long-term variations in the climate of
the Earth?
a. tilt of the Earth's axis
b. shape of the Earth's orbit
c. speed of rotation of the Earth on its axis
d. wobble of the Earth's axis
e. All are factors.
Q. 6 -
What drives deep ocean currents?
a. the rotation of the Earth
b. the Earth's magnetic field
c. wind
d. waves
e. density
Quick Reply
