The orogens along the west coasts of the Americas, the eastern margin of Asia and the islands north of
Australia and New Zealand are part of the _________________________. Fill in the blank(s) with the appropriate word(s).
circum-Pacific belt
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In terms of the periodic table, is there an abrupt or gradual change between ionic and covalent bonds?
A. There is a gradual change: the farther apart, the more ionic. B. Actually, any element of the periodic table can form a covalent bond. C. Whether an element forms one or the other depends on nuclear charge and not the relative positions in the periodic table. D. There is an abrupt change that occurs across the metalloids.
What is the dew-point temperature of the parcel?
Take a parcel of air from the Bay of Bengal in the Indian Ocean up to Cherrapunji at 1500 m (4900 ft). Assume that its temperature is 30°C and has 90% RH at 0 m (0 ft) over the Bay of Bengal.
What will be an ideal response?
Would you expect polypropylene to be denser or less dense than low-density polyethylene? Why?
A. Polypropylene should be more dense given that the polyethylene is already known to be of low density. B. Polypropylene should be less dense because its molecules are not able to pack together as tightly. C. Polypropylene should be more dense because it has a greater molecular mass. D. Polypropylene should be more dense because its molecules are able to pack more closely together.
The lower the pH of a liquid
A) the more acidic it is. B) the more basic (alkaline) it is. C) the more neutral it is. D) the more chemical reactive it is.