20 multiple choice questions to test your understanding.
See answers immediately after selecting
Q1. What percentage of the Earth's surface is covered with water?
Q2. What percentage of Earth's total water is saltwater in oceans?
Q3. The continuous movement of water through evaporation, condensation, and precipitation is called:
Q4. What drives the water cycle?
Q5. The average salinity of ocean water is:
Q6. The highest point of a wave is called the:
Q7. Waves in the ocean are mainly caused by:
Q8. A tsunami is caused by:
Q9. Tides are mainly caused by:
Q10. Spring tides occur during:
Q11. Neap tides occur when the Sun and Moon are at:
Q12. Warm ocean currents flow from:
Q13. The Gulf Stream is a:
Q14. Where warm and cold ocean currents meet, it creates ideal conditions for:
Q15. Cold ocean currents flowing along a coast can cause:
Q16. Which of the following is NOT a form of precipitation?
Q17. The process by which water vapour changes into water droplets is called:
Q18. Which of the following helps in water conservation?
Q19. Salinity of ocean water is higher in areas with:
Q20. How many high tides does a place typically experience in a day?