For what reason might the nuclei of atoms break apart in radioactivity?
A) There are too many neutrons in the nucleus.
B) Electrons are being shared by two adjacent atoms.
C) Forces that bind protons and neutrons together are weak.
D) Protons are being exchanged between atoms.
Answer: C
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Clays which change to a near-liquid state as a result of sudden disturbance are _______ clays.
a - scree b - mudflow c - talus d - quick e - none of the above
Why does seawater evaporate more slowly than freshwater?
a. The latent heat of evaporation is higher for seawater than freshwater. b. The dissolved salts attract and hold water molecules. c. The latent heat of evaporation is higher for freshwater than seawater. d. Salts are evaporating along with the water. e. The latent heat of vaporization is higher for seawater than freshwater.
The stratosphere:
A) is part of the heterosphere. B) has a low moisture content compared to the troposphere. C) typically gets colder as elevation increases. D) is where much of Earth's weather occurs.
Coral formations
A) tend to occur poleward of 30° latitude. B) survive in a broad ecological range because they are tolerant of temperature, salinity, and depth variation. C) require water that is high in sediment concentration. D) are made of animals living symbiotically with simple algae.