Author Question: Briefly explain why sunspots are cooler than surrounding regions of the Sun, and why they look dark ... (Read 129 times)

mrsjacobs44 · **on:** Jul 27, 2018

Briefly explain why sunspots are cooler than surrounding regions of the Sun, and why they look dark in photos.

What will be an ideal response?

Question 2

Emission lines from different ionization states of the same element appear in the same place in the spectrum.

Indicate whether the statement is true or false

momolu · **Reply #1 on:** Jul 27, 2018

Answer to Question 1

They are cooler because their strong magnetic fields suppress convection and prevent hotter material from flowing into them. Because they are cooler, they emit less thermal radiation per unit area and therefore look dark in contrast to brighter surrounding regions.

Answer to Question 2

FALSE