Tides

EMMANUELCOLLEGE OF B.Ed TRAINING

VA Z H I C H A L , K U D A P PA N A M O O D U P. O . ,T H I R U VA N T H A P U R A M .

M O H A M M E D A S H R A F. T KG E O G R A P H Y

C a n d i d a t e c o d e : 1 3 3 6 1 0 1 9

TIDES

1.What are they?2.What are they caused by?3.Are there different kinds of tide?

Tides – What are they?

Tides are the periodic rise and fall of water level in the sea

Tides – Causes

1.gravitational attraction from sun and moon.

2.centrifugal force due to rotation of the earth.

Tides-causes1.High tides occurs in those parts

of ocean which face moon.2.low tide occurs at the same time

in these parts which are at an angular distance of 90 to the high

tide region.

Tides and sun1. The approximate distance

between the earth and sun is 14.95 million kilometer.

2.It is about 400 times the distance between earth and moon.

There fore sun’s gravitational force has less effect on tide.

TYPES OF TIDES 1.SPRING TIDE

2.NEAP TIDE

SPRING TIDE

Types of tides

1.A Tide with a large range that occurs two times a month.(new moon and full moon)2. Sun , Earth and Moon are in a straight line position called sysygy.

NEAP TIDE1.A tide of minimum ranges that occurs during the first and third quarters of the moon.2. The sun, earth and moon form a 90 angle.

CONCLUSION1.Tides are periodic rise and full of

ocean water2.Due to gravitational pull of moon ,

sun and centrifugal force of the earth.3. Mainly two types: spring tide and

neap tide.

REVIEW QUESTIONS1.What ids tide ?

2.What is the dominant force that cause tide?

3.Where is moon’s pull strongest on earth?4.Which is the most important agent for

the occurance of the tide?5. what is sysygy?

BLACK BOARD SUMMARY

Social Science STD: IXDIV: CTides

• Spring Tide• Neap Tide

FOLLOWUP ACTIVITY1.Prepare a brief report on “How

do tides affects human life?”

THANK YOU!