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Ocean Motion Quiz Chapter 4 6th
Chapter 4 Ocean Motion Quiz 6th
29
Science
6th Grade
11/29/2011

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Term
Near the shore, friction between the ocean floor and the water cause waves to
Definition
slow down
Term
As the salinity of water increases
Definition
the density increases
Term
Water rushing back to sea through a narrow gap causes a
Definition
rip current that can carry swimmers away from the shore
Term
Surface currents that flow from the tropics toward the poles carry
Definition
warm water
Term
Wavelength
Definition
The horizontal distance between wave crests
Term
As a wave nears shore, the wave height increases and the
Definition
wavelength decreases
Term
rip curent
Definition
A rush of water that flows rapidly back to sea through a narrow opening
Term
Dunes reduce beach erosion because
Definition
the roots of dune plants help hold sand in place
Term
Tides are caused by
Definition
The interaction of the Earth, moon, and sun
Term
Neap Tide
Definition
A tide with the least difference between low and high tide
Term
Salinity
Definition
A measure of the amount of dissolved salts in water
Term
Current
Definition
A large stream of moving water that flows through oceans
Term
Coriolis Effect
Definition
Why currents in the Northern Hemisphere curve to the right
Term
Upwelling
Definition
The movement of cold deep ocean water to replace warm water at the surface
Term
Waves on the surface of the ocean are mostly caused by
Definition
wind
Term
Trough
Definition
The lowest point of a wave
Term
Groin
Definition
a short concrete wall built to help stop erosion along a strip of beach
Term
High tides occur
Definition
every 12 hours
Term
El Nino
Definition
Can cause severe storms and prevent upwelling
Term
How is climate different from weather?
Definition
Climate is the typical temperature and precipitation patterns over a LONG period of time and weather is what happens DAY TO DAY.
Term
Most waves form when energy is transferred to water from
Definition
winds
Term
Wave height
Definition
The VERTICAL distance between the crest and trough of a wave
Term
Tsunamis
Definition
caused by earthquakes on the ocean floor
Term
Longshore drift
Definition
The movement of sand along a beach
Term
Spring Tide
Definition
The greatest difference in heights of High and Low tides
Term
Dunes
Definition
Hills of wind blown sand that help prevent beach erosion
Term
Coriolis Effect
Definition
Why surface currents curve, caused by Earth's rotation.
Term
El Nino
Definition
Abnormal climate event which occurs in the Pacific Ocean every 7-10 years
Term
Gulf Stream
Definition
A large, powerful warm surface current in the Atlantic Ocean that affects the climate of land in its path, including New Jersey
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