How is sound transmitted through a medium?
a. By rapid vibrations of molecules
b. By rapid temperature changes in a medium
c. By rapid pressure changes in a medium
d. By rapid random movements
ANS: C
Sound energy is spread by rapid pressure changes. Sound's intensity decreases as it moves through
seawater due to scattering, spreading and absorption. Information can be found in the section Sound
Travels Much Farther Than Light through the Ocean.
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In the Df and Dw climates, winter precipitation mainly originates from ________
A) midlatitude cyclones B) orographic influences C) large thunderstorms D) the intertropical convergence E) subtropical highs
Which of the following produces the LEAST severe weather?
A. supercell thunderstorm B. squall line C. ordinary cell thunderstorm D. mesoscale convective complex
It is estimated that more than one-fourth of children lack measles immunization in South Asia and Sub-Saharan Africa
Indicate whether the statement is true or false.
Discuss the suite of sedimentary rocks that forms on a passive margin with increasing distance
and water depth from the shoreline. What happens to this suite of rocks during a regression? What happens during a transgression? What will be an ideal response?