What percentage of Earth's surface is covered by the hydrosphere?

About 71%

Which gravitational force primarily causes tides in Earth's oceans?

The gravitational forces of the Moon and the Sun

True or False: High tides occur every 12 hours and 26 minutes.

True

Riddle: I rise and fall, influenced by the Moon's pull, twice a day I dance, what am I?

Tide

The highest spring tides, known as ______, occur when the Moon is at perigee and Earth is at perihelion.

King Tides

What type of tide occurs when the Sun, Moon, and Earth are aligned?

Spring Tide

Which term describes the average difference in water levels between high and low tides?

Amplitude of tides

Fill in the blank: Ocean currents can be classified into warm and ______ currents.

Cold

True or False: The Kuroshio current is a cold ocean current.

False. The Kuroshio current is a warm current.

What effect do warm ocean currents typically have on coastal temperatures?

They raise coastal temperatures.

Riddle: I am a circular ocean current pattern, influenced by landmasses, what am I?

Gyre

Which process is responsible for the slow movement of ocean water due to density differences?

Thermohaline circulation

Fill in the blank: The ______ Effect causes ocean currents in the Northern Hemisphere to deflect to the right.

Coriolis

True or False: Tides have no impact on marine ecosystems.

False. Tides play a crucial role in marine ecosystems by transporting nutrients and organisms.

What is the primary function of tidal energy as a renewable resource?

To generate electricity

What is the cold current that flows southeast along Greenland and Canada’s northeast coast called?

Labrador Current

Fill in the blank: The phenomenon where high tides are very high and low tides are very low is characteristic of ______ tides.

Spring

Riddle: I help keep harbors ice-free in polar regions. What am I?

Tidal movement

How often do neap tides occur in a month?

Twice a month

What type of tide occurs when the Sun, Earth, and Moon are at a right angle?

Neap Tide