Which scale is used to describe the intensity of an earthquake?
a. richter scale
b. mercalli scale
c. intensity scale
d. destruction scale

When it is summer at the south pole, a. the northern hemisphere is tilted toward the sun. b. the southern hemisphere is tilted away from the sun. c. the northern hemisphere is tilted away from the sun. d. both the southern and northern hemispheres are tilted toward the sun.