Ocean Water Movement

Surface currents are created by

• wind

• the moon's gravity

• increased water density

• heat

The tidal range is the greatest during

• spring tide

• neap tide

• a tidal bore

• nighttime

When water molecules slow down and move closer together, there _______________ increases.

• temperature

• mass

• volume

• density

The highest point of a wave is called the

• wavelength

• wave height

• trough

• crest

Spring tides occur when the sun, Earth and moon are

• at a 90° angle

• in a straight line

The periodic change in the location of warm and cool surface waters in the Pacific Ocean is called

• a tidal range

• the Coriolis Effect

• El Nino

• continental deflection

When cold water rises to replace warm water that has been blown away, this a called ______________________.

• the Coriolis Effect

• upwelling

• a tidal bore

• a deep current

Which of the following affect deep currents?

• salinity

• continental deflection

• global winds

• Coriolis Effect

The main reason for a storm surge is high _____________.

• tides

• winds

• earthquake activity

• levels of salinity

How often do spring tides occur?

• every 7 days

• every 14 days

• every 21 days

• once each month