Here are 10 one-word answer type questions on Ocean Circulation, along with their answers and explanations:
1. What are the three main types of oceanic movements?
Answer: Waves, tides, currents
Explanation: Ocean water is always in motion. The three main types of movement are waves (surface disturbances), tides (periodic rise and fall due to the Moon and Sun’s gravitational pull), and currents (continuous water flow in a particular direction) .
2. What is the periodic rise and fall of ocean water called?
Answer: Tide
Explanation: Tides are caused by the gravitational pull of the Moon and the Sun, leading to the rhythmic rise and fall of water levels twice a day .
3. Which type of tide occurs when the Sun, Earth, and Moon are in a straight line?
Answer: Spring tide
Explanation: During the full moon and new moon, the combined gravitational forces of the Sun and the Moon create the highest tides, called spring tides .
4. What is the term for the meeting point of warm and cold ocean currents?
Answer: Convergence
Explanation: The areas where warm and cold ocean currents meet are called convergence zones. These regions often have rich marine biodiversity and are excellent fishing grounds .
5. Which ocean current is known as a warm current in the Atlantic Ocean?
Answer: Gulf Stream
Explanation: The Gulf Stream originates near the equator and flows towards the poles, bringing warm water to the North Atlantic region .
6. What is the name of the cold ocean current that flows near the eastern coast of Canada?
Answer: Labrador Current
Explanation: The Labrador Current is a cold current that brings icy waters from the Arctic, influencing the climate of eastern Canada .
7. Which phenomenon occurs due to an underwater earthquake or volcanic eruption?
Answer: Tsunami
Explanation: A tsunami is a massive wave caused by underwater earthquakes, volcanic eruptions, or landslides, capable of causing widespread destruction .
8. What type of ocean currents move from equator to poles?
Answer: Warm currents
Explanation: Warm currents originate in equatorial regions and carry heat towards the poles, influencing regional climates .
9. Which oceanic movement is primarily caused by wind?
Answer: Waves
Explanation: Waves are generated when wind scrapes across the ocean surface, with stronger winds creating larger waves .
10. Which type of tide occurs when the Sun and Moon exert forces in opposite directions?
Answer: Neap tide
Explanation: Neap tides occur during the first and last quarter moon phases, when the Sun and Moon exert gravitational forces at right angles, causing lower-than-normal tides .
These questions provide a concise understanding of ocean circulation, incorporating essential concepts of tides, currents, and waves.
