Tides and Ocean Currents

What affects the density of ocean water?

• Ocean depth and gyres

• Salinity and temperature

• Temperature and ocean animal type

• Ocean depth and temperature

What causes surface currents?

• Winds

• Salinity differences

• Temperature differences

• Coriolis effect

Because of the Coriolis effect currents in the southern Hemisphere travel in what direction.

• Clockwise

• Up

• Counterclockwise

• Down

What has the biggest effect on ocean waters?

• The Sun

• The Moon

• The Earth

• The Atmosphere

What tide has the largest tidal range?

• Spring tide

• Neap tide

• High tide

• Low tide

What are tides?

• More water filling up the ocean
• The rising and falling of the water on the earth surface
• Jupiter orbiting the moon
• Waves in the oceans 

Movements of ocean water in a continuous flow are called?

• ocean currents
• global winds
• air mass
• front

Due to the Coriolis Effect, water in the southern hemisphere moves

• clockwise
• counter-clockwise
• both
• neither

The __________ is a surface current that flows along the eastern US and brings warm water to Europe.

• California Current

• Gulf Current

• North American Gyre

• Arctic Current

The diagram below shows the Moon orbiting Earth, as viewed from space above Earth's North Pole. The Moon is shown at eight positions in its orbit.
spring ocean tides occur when the difference in height between high tide and low tide is greatest. At which two positions of the Moon will spring tides occur on Earth?

• 1 and 5
• 2 and 6
• 3 and 7
• 4 and 8