Ocean Characteristics and Zones

Area of ocean that extends from the low-tide line out to the edge of the continental shelf

• deep zone

• neritic zone

• open ocean

• aphotic zone

Portion of the shoreline that lies between the high and low tide lines

• open ocean

• deep zone

• intertidal zone

• aphotic zone

The zone of the ocean that is shallow enough for sunlight to penetrate.

• open ocean

• aphotic zone

• photic zone

• deep zone

In what zone does approximately 90% of all ocean life live?

• sunlight
• twilight
• midnight

As oceans become deeper, the water pressure ___________________.

• increases
• decreases
• stays the same

90% of the ocean belongs in this ocean layer where the is no sunlight. What is it?

• sunlight

• twilight

• midnight

The midnight zone is also known as the __________________ zone.

• frozen
• aphotic
• frightening
• dark

Which zone has the warmest water temperature?

• sunlight
• twilight
• midnight

Which zone is completely dark and near freezing in temperature?

• sunlight
• twilight
• midnight

The ocean layers are divided by the amount of __________________ in each layer.

• animals
• salt
• light
• people