Why do so many countries face water scarcity?

3

(a)

Is all water on the Earth available to us?

3

(a)

What is precipitation?

3

(a)

Which factors affect the movement of ocean water?

3

(a)

What are tides and how are they caused?

3

(a)

What are ocean currents?

3

(a)

How are high tides important?

3

(a)

Define waves. Write a short note on it.

3

(a)

Give brief note on Tsunami.

3

(a)

Differences between warm ocean current and cold ocean current

3

(a)

Differentiate between waves and tides

3

(a)

What is a tide? Explain its types.

3

(a)

How are spring and neap tides formed?

3

(a)

What is Tsunami? Explain its effect

3

(a)

What are the benefits of high tides?

3

(a)