Northern Hemisphere winters are colder than
Northern Hemisphere summers because
A) Earth is closer to the sun during the sum-
mer.
B) the snow that falls in the northern lati-
tudes cools Earth during the winter.
C) the light from the sun shines more directly
on the Northern Hemisphere during the
summer.
D) the period of sunlight is longer during the
summer than the during the winter.
1. D only
2. C only
3. A only
4. C and D only
5. B only

How do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.