Regarding coastal phenomena, consider the following statements:

Black sand beaches are primarily caused by volcanic activity.

Green sand beaches are formed from the mineral olivine.

Red sand beaches are typically found in areas with high iron oxide content.

How many of the above statements are correct?

Question

Black sand beaches are primarily caused by volcanic activity: This is correct. Black sand beaches are often formed from basalt, a volcanic rock.
Green sand beaches are formed from the mineral olivine: This is correct. The green color comes from the mineral olivine, which is found in some volcanic areas.
Red sand beaches are typically found in areas with high iron oxide content: This is correct. The red color is due to the oxidation of iron minerals in the sand.

Thus, all of the statements are correct. The correct answer is (c) All three.

GKToday Admin · Accepted Answer

All three

Black sand beaches are primarily caused by volcanic activity: This is correct. Black sand beaches are often formed from basalt, a volcanic rock.
Green sand beaches are formed from the mineral olivine: This is correct. The green color comes from the mineral olivine, which is found in some volcanic areas.
Red sand beaches are typically found in areas with high iron oxide content: This is correct. The red color is due to the oxidation of iron minerals in the sand.

Thus, all of the statements are correct. The correct answer is (c) All three.

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