Oceanography. How much of the Earth’s surface is water?
description
Transcript of Oceanography. How much of the Earth’s surface is water?
![Page 1: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/1.jpg)
Oceanography
![Page 2: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/2.jpg)
How much of the Earth’s surface is
water?
![Page 3: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/3.jpg)
71%
![Page 4: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/4.jpg)
Name the oceans
![Page 5: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/5.jpg)
ArcticAtlanticIndianPacific
![Page 6: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/6.jpg)
Which ocean is the largest?
![Page 7: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/7.jpg)
Pacific
![Page 8: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/8.jpg)
Which is the smallest?
![Page 9: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/9.jpg)
Arctic
![Page 10: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/10.jpg)
Which is the deepest ocean?
![Page 11: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/11.jpg)
Pacific
![Page 12: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/12.jpg)
What are seas?
![Page 13: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/13.jpg)
Smaller than oceans and re
partly surrounded by land or a chain
of oceans
![Page 14: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/14.jpg)
What are they also called?
![Page 15: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/15.jpg)
Gulfs
![Page 16: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/16.jpg)
What is a characteristic of
an ocean?
![Page 17: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/17.jpg)
Salinity – the saltiness
![Page 18: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/18.jpg)
Where do the minerals come
from?
![Page 19: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/19.jpg)
Weathering from rocks on land
![Page 20: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/20.jpg)
Is the salinity the same in all parts
of the ocean?
![Page 21: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/21.jpg)
No
![Page 22: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/22.jpg)
Why not?
![Page 23: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/23.jpg)
There is less in the colder regions because less
evaporation and more fresh water
melting
![Page 24: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/24.jpg)
More in warmer climates because
there is more evaporation of
the water
![Page 25: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/25.jpg)
What is water pressure?
![Page 26: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/26.jpg)
The weight of the water pressing on
an object
![Page 27: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/27.jpg)
What happens as you go deeper?
![Page 28: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/28.jpg)
There is more pressure
because of more water on top of
you
![Page 29: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/29.jpg)
What is the continental shelf?
![Page 30: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/30.jpg)
The shallow area around the edge of the continent that extends into the
ocean
![Page 31: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/31.jpg)
What is the Continental
slope?
![Page 32: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/32.jpg)
A steep drop in land that extends from the continental shelf to the bottom of the
ocean
![Page 33: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/33.jpg)
What is the Abyssal Plain?
![Page 34: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/34.jpg)
The flattest part of the ocean
floor.
![Page 35: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/35.jpg)
What is a ridge?
![Page 36: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/36.jpg)
An underwater mountain range
![Page 37: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/37.jpg)
What is a rift?
![Page 38: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/38.jpg)
A deep valley in the ocean floor
![Page 39: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/39.jpg)
What are waves?
![Page 40: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/40.jpg)
The up and down movement of surface water
![Page 41: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/41.jpg)
What causes waves?
![Page 42: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/42.jpg)
The wind
![Page 43: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/43.jpg)
Why?
![Page 44: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/44.jpg)
Because water moves more
slowly than wind
![Page 45: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/45.jpg)
Does water move forward very
much?
![Page 46: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/46.jpg)
No – it stays in relatively the
same position
![Page 47: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/47.jpg)
What are some other causes of
waves?
![Page 48: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/48.jpg)
Earthquakes, volcanoes, and
extremely low air pressure
![Page 49: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/49.jpg)
What is a tidal wave called?
![Page 50: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/50.jpg)
Tsunami
![Page 51: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/51.jpg)
How high can it get?
![Page 52: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/52.jpg)
Over 100 feet
![Page 53: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/53.jpg)
What is another problem during
storms?
![Page 54: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/54.jpg)
Storm surge
![Page 55: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/55.jpg)
What is it?
![Page 56: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/56.jpg)
The continual increase of the level of the high
tide
![Page 57: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/57.jpg)
What is a rogue wave?
![Page 58: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/58.jpg)
It is a large wave coming in a
different direction than the others
![Page 59: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/59.jpg)
What are currents?
![Page 60: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/60.jpg)
A stream of water that flows through the ocean like a
river
![Page 61: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/61.jpg)
What is special about this?
![Page 62: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/62.jpg)
It moves water forward –
sometimes long distances
![Page 63: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/63.jpg)
What are the different kinds of
currents?
![Page 64: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/64.jpg)
SurfaceShoreline
rip
![Page 65: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/65.jpg)
What are surface currents?
![Page 66: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/66.jpg)
The flow of water across the surface of the ocean – usually caused by prevailing
winds
![Page 67: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/67.jpg)
How large can they be?
![Page 68: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/68.jpg)
Hundred kilometers wide by hundreds of meters deep
![Page 69: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/69.jpg)
How does this affect the world?
![Page 70: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/70.jpg)
It brings cold water to warm areas and
warm water to cold areas and impacts
the climate
![Page 71: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/71.jpg)
What are shoreline currents?
![Page 72: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/72.jpg)
Local currents that run along the coast – these can change
daily
![Page 73: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/73.jpg)
What is a rip current?
![Page 74: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/74.jpg)
A shoreline current that flows
away from the beach
![Page 75: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/75.jpg)
How does this happen?
![Page 76: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/76.jpg)
The water finds the easiest way away
from the beach and pulls through the
sandbars producing a strong current
![Page 77: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/77.jpg)
What is a longshore current?
![Page 78: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/78.jpg)
The water strikes the beach at an
angle and moves the water forward along the shore
![Page 79: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/79.jpg)
What also causes the currents?
![Page 80: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/80.jpg)
The rotation of the Earth and the
differences in temperature
![Page 81: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/81.jpg)
How does the temperature
affect it?
![Page 82: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/82.jpg)
Cold water sinks and warm water rises causes the water to change
places
![Page 83: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/83.jpg)
What is tides?
![Page 84: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/84.jpg)
The repeated rise and fall of the
level of the ocean
![Page 85: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/85.jpg)
What is caused by?
![Page 86: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/86.jpg)
Gravity of the moon
![Page 87: Oceanography. How much of the Earth’s surface is water?](https://reader035.fdocuments.in/reader035/viewer/2022062401/5a4d1b2b7f8b9ab059998ea0/html5/thumbnails/87.jpg)
The End