When an oxygen-19 nucleus undergoes beta decay, the nucleus formed is that of
a. nitrogen-18.
b. oxygen-18.
c. fluorine-19.
d. carbon-14.
[Ques. 2] Which of the following has the smallest albedo?
a. Water
b. Polar ice
c. Fresh snow
d. Dry sand
[Ques. 3] Radioactive decay was discovered in 1896 by
a. Ernest Rutherford.
b. Niels Bohr.
c. Henri Becquerel.
d. Marie and Pierre Curie.
[Ques. 4] Which of the following has the largest albedo?
a. Water
b. Polar ice
c. Fresh snow
d. Dry sand
e. Dark soil
[Ques. 5] Which isotope of hydrogen is radioactive?
a. Protium
b. Tritium
c. Deuterium
d. Hydronium
[Ques. 6] The fraction of incident light that a body reflects is known as its
a. Rayleigh scattering.
b. insolation.
c. albedo.
d. humidity.
[Ques. 7] The most important force between a proton and a neutron is the ______________ force.
a. strong nuclear
b. quark
c. electromagnetic
d. gravitational
[Ques. 8] The troposphere derives energy by means of
a. latent heat of condensation only.
b. absorption of terrestrial radiation only.
c. conduction from Earth's surface only.
d. all of these.
[Ques. 9] The strong nuclear force is
a. strongly repulsive for distances less than 10-14 m and strongly attractive for larger distances.
b. zero for distances less than 10-14 m and strongly attractive for larger distances.
c. strongly attractive for distances less than 10-14 m and zero for larger distances.
d. strongly attractive for distances less than 10-14 m and repulsive for larger distances.
[Ques. 10] The blueness of the sky results from
a. preferential scattering of light by gas molecules.
b. the lapse rate.
c. the greenhouse effect.
d. latent heat.
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