Oceanography

The salt in seawater comes from Earth’s interior and from the ________________ of rocks.

• erosion
• weathering
• volcanic eruptions
• tectonic movements

Tags

NGSS.MS-ESS2-2

In seawater, when the temperature ________________, the density decreases.

• decreases
• stays the same
• increases
• fluctuates

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The three main zones of the open ocean are the surface mixed zone, the ________________ zone, and the deep zone.

• abyssal
• shallow
• midnight
• transition

Marine organisms can be classified as ________________, nekton, or benthos.

• jellyfish
• plankton
• algae
• coral

Tags

NGSS.MS-LS2-3

Below about 100m in the lower ________________ zone, there is still enough light for marine animals to avoid predators, find food, recognize their species, and locate mates.

• photic

• pelagic

• abyssal

• benthic

Tags

NGSS.MS-LS2-3

The ocean’s circulation is organized into five major ________________ systems, that move in circles within ocean basins.

• current
• wave
• tide
• gyre

Tags

NGSS.MS-ESS2-6

The rising of cold water from deep layers of the ocean to replace warmer surface water is ________________.

• downwelling
• thermocline
• salinity gradient
• upwelling

Tags

NGSS.MS-ESS2-6

The tops of waves are their ________________, which are separated by low areas called ________________.

• highs, lows
• summits, pits
• peaks, valleys
• crests, troughs

As a wave nears the shore, its characteristics begin to change when the water depth is half of its ________________.

• wavelength
• velocity
• frequency
• amplitude

Tags

NGSS.HS-PS4-1

The tidal ________________ is the difference between successive high and low tides.

• range
• extent
• depth
• level