Although sunspots are cooler areas in the photosphere, when they increase in number that tells us the Sun is becoming more active
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TRUE
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Metric System: Express the number 13.5 gigameters in meters without using scientific notation.
A. 135,000 m B. 135,000,000 m C. 135,000,000,000 m D. 13,500,000,000 m
The formation of which of the following is not directly caused by erosive wave action?
a. Wave-cut cliffs b. Sea stacks c. Pocket beaches d. Sea caves
A proton that is initially at rest is accelerated through an electric potential difference of magnitude 500 V. How much kinetic energy does it gain? (e = 1.60 × 10-19 C)
A) 500 J B) 8.0 × 10-17 J C) 1.6 × 10-19 J D) 800 J
The Polynesian navigators of the South Pacific found their way primarily by observing the position of Polaris in the night sky
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