Effect of Ocean Tides

Q. _______ tides help in navigation.

1. Low
2. Neap
3. High
4. Spring

Q. Which of the following is not an advantage of high tides?

1. Generation of electricity
2. Conserving marine ecosystems
3. Helping in navigation
4. Acting as natural clensers

Q. Which of the following are steps involved in the generation of electricity from tides?

1. Floodgates dams are built across the inlet of tides.
2. During low tides, water is pushed inside the floodgates using motors.
3. During high tide, gates are opened and water is allowed to enter through the inlet.
4. When the tide falls outside, floodgates are opened and water is released through a pipe.

Q. _________ are periodic movements of ocean water due to the Moon and the Sun’s gravity.

1. Tides
2. Tsunami
3. Earthquake
4. Cyclones

Q.

Why is a barrage created constructed across a narrow opening to a sea?

Q. _________ are periodic movements of ocean water due to the Moon and the Sun’s gravity.

1. Tides
2. Cyclones
3. Tsunami
4. Earthquake

Q. How do tides act like natural cleaners of the beaches and ports?

1. Tides wash off the debris dumped on the shores and ports into the deep sea.
2. Tides decompose plastic waste on the shores and ports.
3. Tides separate organic waste in the ports from plastic waste.
4. Tides naturally dissolve oil spills from ships to ocean water.