Thunder is caused by
a. the collision between two thunderstorms with opposite electrical charge.
b. the rapid heating of air surrounding a lightning channel.
c. the explosion that occurs when + and - charge collide and neutralize each other.
d. turbulent wind motions inside the thunderstorm.
e. microbursts within the atmosphere.
ANSWER: b
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What indicates that the lava that flowed north from SP Mountain was very fluid?
Look at the following volcanoes (note that the maps are of several different scales): • Mount Vsevidof (53°07'35"N, 168°41'16"W), a composite volcano in Alaska (shown on Map T-2, Map T-21b, and Figure 34-2) • Crater Mountain (37°52'42"N, 119°00'25"W), the highest peak of the Mono Craters, a chain of rhyolitic plug dome volcanoes in California (shown on Maps T-23a and T-23c) • SP Mountain (35°34'56"N, 111°37'55"W), a basaltic cinder cone in Arizona (shown on Maps T-22a and T-22b and Figure 34-3) • Mauna Loa (19°28'17"N, 155°35'41"W), a large shield volcano on the Big Island of Hawai‘i (shown on Maps T-1 and T-21a) What will be an ideal response?
List the three countries using the most oil, coal, and natural gas
What will be an ideal response?
Where do most shield volcanoes form—on the ocean floor or on the continents?
What will be an ideal response?
Because its various parts are always in flux, an ecosystem is said to be:
a. cathartic. b. lethargic. c. static. d. dynamic.