Water and Coastal Dynamics Quiz

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

• 50%

• 90%

• 70%

• 80%

What is the primary component of seawater?

• Oxygen

• Freshwater

• Sodium chloride

• Hydrogen

At what temperature does pure water reach its maximum density?

• 0°C

• 4°C

• 100°C

• 10°C

What phenomenon is primarily responsible for the movement of ocean currents?

• Solar radiation

• Earthquakes

• Tsunamis

• Wind

What type of tide occurs when the Earth, moon, and sun are aligned?

• High tide

• Low tide

• Neap tide

• Spring tide

Which of the following is a characteristic of tsunamis?

• They occur only in shallow waters.

• They can travel at speeds over 800 km/h in deep water.

• They are caused by wind.

• They are always visible at sea.

What is the primary cause of waves in the ocean?

• Wind

• Earthquakes

• Temperature changes

• Tides

What is the term for the area where the ocean meets the land?

• Coastal zone

• Littoral zone

• Continental shelf

• Oceanic trench

What is meant by 'marine influences' in the context of coastal areas?

• Wind patterns

• Waves and storm surges

• Only tidal waters

• All of the above

What type of coastal feature is formed by the continuous erosion of cliffs?

• Barrier islands

• Coral reefs

• Sea stacks

• Sand dunes