The rotating loops of currents that occur in the ocean are referred to as gyres.
Answer:
Waves meet the shore and cause the crest to spill over the trough.
Explanation:
This activity creates a back and forth movement of the sand which causes them to settle at a certain area below the water.
Explanation:
At the center its weight is zero. Or you can argue by symmetry: if the weight is not zero, in what direction would it act?
Side lengths and angle measures
