Which of the following statements is true of reconnection events?
A) They refer to the breaking of identically directed magnetic field lines in a plasma.
B) Kinetic and thermal energy in plasmas with low conductivity are converted to magnetic energy.
C) Solar flares occur in active regions where oppositely directed magnetic fields meet and cancel each other.
D) They generate and release magnetic fields as long-wavelength photons and low-energy electrons.
C
You might also like to view...
Einstein's prediction of the curvature of space was confirmed by the 1919 total solar eclipse
Indicate whether the statement is true or false
The cosmic microwave background is almost perfectly uniform in all directions, except for very small deviations in its temperature. What do scientists think these small deviations represent?
A) regions of slightly higher density that made it possible for galaxies to form B) small increases in temperature caused by individual stars C) The warmer spots represent regular matter and the cooler spots represent dark matter. D) regions of slightly higher helium abundance in the early universe E) varying redshifts and blueshifts due to motions of gas in the early universe
Most asteroids orbit the Sun in the asteroid belt, which is located
a. between the orbits of Mars and Jupiter b. between the orbits of Neptune and Pluto c. beyond the orbit of Neptune d. none of the above
Quantum uncertainties are the source of
A) the unpredictability of radioactive decay. B) the unpredictability of games of chance such as flipping coins. C) Both of the above. D) None of the above.