The horizontal rows of elements in the periodic table are called
a. periods.
b. groups.
c. families.
d. series.
[Ques. 2] Geologic evidence that supports the theory of continental drift does not include
a. glaciation in the Southern Hemisphere.
b. drag marks on the ocean floor.
c. continuity of geologic structures.
d. the discovery of the same fossils on different continents.
[Ques. 3] The periodic table is most easily understood in terms of the ______________ configurations of the elements.
a. periodic
b. proton
c. neutron
d. electron
[Ques. 4] Picnickers see a lightning flash of an approaching thunderstorm and hear the thunder 8.0 s later.
a. Approximately how far away, in miles, is the storm?
b. If the storm is moving at a speed of 10 mi/h and the picnickers take 20 minutes to finish eating and pack, will they get wet?
[Ques. 5] The second most abundant element in the Earth's atmosphere is
a. oxygen.
b. argon.
c. nitrogen.
d. carbon dioxide.
[Ques. 6] During the approach of a severe thunderstorm, workers on a project see lightning and then hear the resulting thunder 5.0 s later. How far away, in kilometers, is the storm?
[Ques. 7] Buckyball is an allotrope of the element
a. carbon.
b. oxygen.
c. phosphorus.
d. none of these.
[Ques. 8] A cold front traveling at an average speed of 35 km/h eastward is 280 km due west of you. Approximately how long will it be before your location experiences a sudden temperature drop?
[Ques. 9] Two or more forms of the same element that have different bonding structures in the same physical phase are called
a. isobars.
b. allotropes.
c. isotopes.
d. isomers.
[Ques. 10] Changes in Earth's thermal balance by decreasing the transparency of the atmosphere to insolation can result from ______________ pollution.
Fill in the blank(s) with correct word
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