Which factors influence the velocity of P-waves as they travel through the Earth?
A. The density of the material
B. How rigid the material is
C. How easily the rocks are compressed
D. ALL OF THESE
Ans: D. ALL OF THESE
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Steel wool wetted with vinegar is stuffed into a narrow mouth round glass bottle. A rubber balloon is then sealed over the mouth of the bottle. After several hours, the balloon inflates into the bottle in an inverted manner. What happened?
A. False! The balloon inflates above the mouth of the bottle because the reaction between the vinegar and steel wool produces a gas which is forced upward because of increased pressure inside the sealed bottle. B. The vinegar reacts with the steel wool by absorbing oxygen within the bottle thus decreasing the pressure. The greater outside pressure causes the balloon to inflate in an inverted manner. C. Vinegar fumes are diamagnetic, and as they accumulate above the liquid, the steel wool is attracted thus inflating the balloon into the mouth of the bottle in an inverted manner. D. The caustic vinegar fumes get past the steel wool and deteriorate the balloon, which begins to sag into the bottle and inflate it in an inverted manner.
If we compare closely related rabbit species in tropical and arctic environments, we would expect the tropical species to be ________ in size and to have ________ legs
A) larger; longer B) larger; shorter C) smaller; longer D) smaller; shorter
Consider a sample of porphyritic andesite, which is common in Pacific Rim volcanoes. Speculate how this sample may have formed (simply defining porphyritic isn't enough, be specific)
What will be an ideal response?
What one thing remains relatively constant through the seasons in tropical biomes?
A) sunlight B) temperature C) greenhouse gas levels D) moisture E) precipitation