Sunspots are cooler than the surrounding gas in the photosphere because
A) they are regions where convection carries cooler material downward.
B) there is less fusion occurring there.
C) magnetic fields trap ionized gases that absorb light.
D) strong magnetic fields slow convection and prevent hot plasma from entering the region.
E) magnetic fields lift material from the sunspot and quickly cool the material.
Question 2
Why does increasing the amount a greenhouse gas increase the temperature of a planet?
A) Greenhouse gases absorb visible light. B) Greenhouse gases emit visible light.
C) Greenhouse gases absorb infrared light. D) Greenhouse gases emit infrared light.
The pancreas. This organ sits just below the stomach and is both an exocrine and an endocrine gland.
The Reticular Activating System and Related Regions in the Brain Are Important Areas of Focus for D
Important Motor Regions of the Human Brain
Sunspots
New patterns of gene expression can be generated by overlapping regions containing two different gen
Major bone (tan) and cartilage (light blue) elements of the human skeleton. Inset shows regions of v