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.
History of the number of observed sunspots during the last 250 years, which shows the ~11-year solar
Relationship of the 12 cranial nerves to specific regions of the brain.
Regions of the Hypothalamus Involved in Eating and Metabolism
Landform Regions
One unit of clathrate structure surrounding a hydrophobic molecule (yellow)
New patterns of gene expression can be generated by overlapping regions containing two different gen