Explain what is meant by the solar cycle. What role does magnetism play?
What will be an ideal response?
The solar cycle is the periodic reversal of the Sun's magnetic field and occurs over a 22 year period. It is equal to two sunspot cycles. The north pole of the Sun changes to a south pole in 11 years and changes back to a north pole in another 11 years.
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The solar nebula theory is NOT able to explain which of the following observed characteristics of the solar system?
a. common direction of rotation of the planets b. common direction of revolution of the planets c. the formation of hydrogen atoms in the solar system from subatomic particles d. the density of the Jovian planets
A(n) ______ layout presents multiple topics, each in its own square or rectangle.
A. card B. geometric C. grid D. gallery
The distances to other stars are best measured in ________
Fill in the blank(s) with correct word
To get to her physics class, Alice walks 0.25 mi to the bus stop. She takes the bus 1.2 mi to the train station. She takes the train 13 mi and walks the remaining 0.17 mi to her class
How far is her commute expressed to the correct number of significant figures? A) 14.6 mi B) 10 mi C) 15 mi D) 14.62 mi E) 14.620 mi