What evidence do we have that the sunspots are magnetic? What ...

[j.rubin]

What evidence do we have that the sunspots are magnetic?
 
  What will be an ideal response?

Question 2

Ultraviolet radiation from a star
 
  a. will not penetrate Earth's atmosphere and reach the ground.
  b. has a wavelength that is longer than the visible light emitted by the star.
  c. has a wavelength that is shorter than the X-rays emitted by the star.
  d. will not penetrate Earth's atmosphere and reach the ground and has a wavelength that is longer than the visible light emitted by the star.
  e. has a wavelength that is longer than the visible light emitted by the star and has a wavelength that is shorter than the X-rays emitted by the star.

[nickk12214]

Answer to Question 1

Astronomers measure magnetic fields on the Sun using the Zeeman effect. When an atom is in a magnetic field, the electron energy levels are altered, and the atom is able to absorb photons with a greater variety of wavelengths than the same atom not in a magnetic field. Magnetic images of the Sun show that sunspots contain magnetic fields a few thousand times stronger than Earth's.

Answer to Question 2

a

[j.rubin]

Gracias!

[chereeb]

Thanks for the timely response, appreciate it