I Spell SSt inservice course KVGN

1. MOVEMENTS OF OCEAN
WATER
K.SUGUNA.R
PGT GEO

2. THREE TYPES OF MOVEMENTS
• WAVES
• TIDES
OCEAN CURRENTS

3. WAVES
•
•
•
HORIZONTAL MOVEMENT OF WATER TOWARDS THE COAST
AND AWAY FROM THE COAST
CAUSED BY WIND
WHEN THE WIND MOVES OVER THE WATER SURFACE,IT
MAKES THE WATER PARTICLES TO MOVE

4. CHARACTERISTICS OF WAVES
•
•
•
WAVE HEIGHT:VERTICAL DISTANCE BETWEEN TOP OF THE
CREST AND THE BOTTOM OF TROUGH
WAVE LENGTH: HORIZONTAL DISTANCE BETWEEN THE TWO
SUCCESSIVE CRESTS
WAVE PERIOD:TIME INTERVAL BETWEEN TWO SUCCESSIVE
WAVES TO TOUCH A FIXED POINT.

5. TIDES
• THE PERIODICAL RISE AN FALL OF THE SEA LEVEL
• ONCE OR TWICE A DAY
• DUE TO THE ATTRACTION OF THE SUN AND THE
MOON.

6. SURGE
• MOVEMENT OF WATER BY
METEOROLOGICAL
EFFECTS(CYCLONE)

7. TYPES OF TIDES
• SPRING TIDES:
•
•
•
RISE VERY HIGH AND FALL VERY LOW
NEW MOON DAYS AND FULL MOON DAYS
SUN ,MOON AND EARTH ARE IN STRAIGHT LINE
• NEAP TIDES
•
•
•
NEITHER RISE VERY HIGH NOR FALL VERY LOW
QUARTER MOON DAYS
SUN ,MOON AND EARTH ARE IN RIGHT ANGLE

8. OCEAN CURRENTS
• LIKE RIVER FLOW IN OCEANS
• FLOW OF REGULAR VOLUME OF
WATER IN A DEFINITE PATH AND
DIRECTION

9. TYPES OF OCEAN CURRENTS
•
•
•
•
•
•
•
•
WARM CURRENT:
MOVES FROM HOT REGION TO CCOLD REGION
MOVES ALONG THE SURFACE OF THE OCEAN
INCREASES THE TEMPERATURE OF THE REGION ALONG WITH IT FLOWS
COLD CURRENT
MOVES FROM HOT REGION TO CCOLD REGION
MOVES ALONG THE SURFACE OF THE OCEAN
INCREASES THE TEMPERATURE OF THE REGION ALONG WITH IT FLOWS

10. TYPES OF OCEAN CURRENTS
•
•
•
•
•
•
•
•
WARM CURRENT:
MOVES FROM HOT REGION TO CCOLD REGION
MOVES ALONG THE SURFACE OF THE OCEAN
INCREASES THE TEMPERATURE OF THE REGION ALONG WITH IT FLOWS
COLD CURRENT
MOVES FROM HOT REGION TO CCOLD REGION
MOVES ALONG THE SURFACE OF THE OCEAN
INCREASES THE TEMPERATURE OF THE REGION ALONG WITH IT FLOWS