Which of the following is not a characteristic of the 11-year sunspot cycle?
A) The sunspot cycle is steady, so that each 11-year cycle is nearly identical to every other 11-year cycle.
B) The likelihood of seeing solar prominences or solar flares is higher when sunspots are more common and lower when they are less common.
C) The Sun's entire magnetic field flip-flops with each cycle, so that the overall magnetic cycle averages 22 years.
D) The number of sunspots on the Sun at any one time gradually rises and falls, with an average of 11 years between the times when sunspots are most numerous.
A) The sunspot cycle is steady, so that each 11-year cycle is nearly identical to every other 11-year cycle.
B) The likelihood of seeing solar prominences or solar flares is higher when sunspots are more
You might also like to view...
Which of the following composite materials could be recycled by melting the shredded composite and form recycled pellets with uniform properties?
(a) Epoxy matrix and carbon fibers (b) PP matrix and glass fibers (c) PP matrix and PP fibers (d) PP matrix and PE fibers
Thin Films: A soap bubble, when illuminated at normal incidence with light of 463 nm, appears to be especially reflective. If the index of refraction of the film is 1.35, what is the minimum thickness the soap film can be if it is surrounded by air?
Fill in the blank(s) with the appropriate word(s).
Galileo Galilei
A) developed a theory of gravity to explain the motions of the planets B) obtained the first observational evidence suggesting the Earth moved about the Sun C) showed that the orbits of the planets were ellipses and not circles D) made detailed measurements of the motions of the planets in the sky
Radioactive Decay: Rutherfordium-261 has a half-life of 1.08 min. What is the decay constant of rutherfordium-261 in terms of seconds?
A. 0.0107 s-1 B. 0.0154 s-1 C. 1.87 s-1 D. 2.91 s-1 E. 0.344 s-1