Focus On Earth Science: California Grade 6

Lesson 1: Earth’s Oceans

Standards Check

1
The formation of sea currents is mainly due to the effects of __________. 4.d
A)mid-ocean ridges
B)warming of surface water by the Sun
C)winds
D)beaches
2
The (A) __________ produces the diversion of ocean currents to the right in the northern hemisphere. 4.d
A)heat transfer
B)Solar radiation
C)wind
D)Coriolis effect
3
What makes the density of seawater increase? 4.d
A)a decrease in the salinity
B)an increase in salinity
C)an increase in temperature
D)an increase in wind speed
4
In general, ocean currents transport heat from ________. 4.d
A)the tropics to the poles
B)the northern hemisphere to the southern hemisphere
C)the southern hemisphere to the northern hemisphere
D)the poles to the tropics
Grade 6
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