logging in or signing up oceans aSGuest8064 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 290 Category: Travel/ Places.. License: All Rights Reserved Like it (0) Dislike it (0) Added: December 24, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Slide 1: By Mrs. Corbin OCEANS Facts About the Ocean : Facts About the Ocean Covers more than 70% of Earth’s surface Food, energy, minerals, and medicines exist in abundance Ships use its waters to transport people and goods Keeps us from frying in some parts of the world and freezing in others Sources of Water : Sources of Water Oceans and Seas Glaciers and Ice caps Soilwater and Groundwater Rivers and Lakes Air and Clouds Plants and Animals How is Water Recycled? : How is Water Recycled? The amount of water on Earth is about the same as when Earth formed over 4.5 billion years ago! Water moves from place to place in a large, complex system called the water cycle. The Water Cycle : The Water Cycle Evaporation Condensation Precipitation Motions in the Ocean : Motions in the Ocean What makes the ocean move? What makes the ocean move? : What makes the ocean move? Currents *Deep Ocean Currents *Surface Currents Tides Waves Ocean Zones : Ocean Zones Sunlit Zone- the upper zone Twilight Zone- the mid zone Midnight Zone- the deepest zone Sunlit Zone : Sunlit Zone Begins at ocean’s surface and goes down 490 ft. (150m) Sunlight brightens and heats water 90% of ocean plants and animals live here Twilight Zone : Twilight Zone Stretches from 490 ft. (150m) to 3,280 ft. (1,000m) deep Not much sunlight reaches here Water is colder and darker Fish live here, but not many plants Midnight Zone : Midnight Zone Deepest Zone Stretches from below 3,380 ft. (1,000m) to the ocean floor No light reaches this zone Completely dark and very cold Very few animals and plants live here. The Ocean Floor : The Ocean Floor Dry land has many different features *mountains, valleys, plains Ocean floor has many different features *mountains, valleys, plains Continental Shelf : Continental Shelf The outermost edge of a continent Gently sloping underwater plain Average depth of 450 ft. (137 m) Some places only a few hundred feet wide, other places extends for miles Sunlight penetrates and warms waters Rich with nutrients and marine life Continental Slope : Continental Slope Outer edge of continental shelf Drops sharply toward sea floor Averages 12,000 ft. (3,600 m) in height Abyssal Plain : Abyssal Plain Huge, flat bottom of the ocean Covered with layer of mud, sand, and animal remains drifted down from above for millions of years Mid-Ocean Ridges : Mid-Ocean Ridges Chains of mountains that run down the center of the ocean Twist and turn for 37,000 miles (60,000 km) Found in all major oceans and represent more than 20% of Earth’s surface Rift Valley : Rift Valley Deep valley along the center of some mid-ocean ridges Molten rock pushes up from center of this rift The seafloor spreads and pushes the continents apart Trenches : Trenches Long, narrow valleys cut into the seafloor Deepest part of the ocean Deepest trench is the Mariana Trench in the Pacific Ocean- 36, 198 ft. (11,033 m) deep IF Mt. Everest was in the Mariana Trench- it would be covered with water Volcanoes : Volcanoes Some ocean mountains Vents in the Earth’s surface Sometimes they rise above water The tops become islands The Hawaiian Islands are the tops Seamounts : Seamounts Volcanoes below the surface that were once above Wind and rain wore them down Water levels rose and covered them Waves wear some down so that they have flat tops- these are called guyot Ocean Plants : Ocean Plants Need sunlight and nutrients to live Plants use sunlight to live- called photosynthesis Phytoplankton is a one-celled floating plant Many fish eat phytoplankton for food Ocean Animals : Ocean Animals Zooplankton are the tiniest ocean animal- a mix of different floating animals Crustaceans are animals with outer shells- crabs and shrimp Zooplankton are food for thousands of small fish Fish : Fish OCEANS Oceans and People : Oceans and People Oceans and People : Oceans and People Oceans can be dangerous Strong storms and huge waves sink boats Storms that begin in the ocean can flood land Once people thought the world was flat, that you could sail off the edge, and that there were huge sea monsters Today we Know More : Today we Know More Ships called submarines travel underwater Divers use special equipment to breath Scientists use computers and special tools to study plants and animals Overfishing : Overfishing People catch ocean fish for food Happens when people catch too much of one kind New fish don’t have enough to eat Can endanger some sea animals Pollution : Pollution Harmful material that is added to the air, water, or soil Can kill plants and animals Oil spills are one kind Oil coats seabirds making it hard for them to move Oil spills hurt fish and other animals- most die Future of Oceans : Future of Oceans People are working to study to save oceans Some are making laws to protect oceans and the plants and animals that live there Trying to make oceans safe for the future Slide 32: THE END You do not have the permission to view this presentation. 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oceans aSGuest8064 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 290 Category: Travel/ Places.. License: All Rights Reserved Like it (0) Dislike it (0) Added: December 24, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Slide 1: By Mrs. Corbin OCEANS Facts About the Ocean : Facts About the Ocean Covers more than 70% of Earth’s surface Food, energy, minerals, and medicines exist in abundance Ships use its waters to transport people and goods Keeps us from frying in some parts of the world and freezing in others Sources of Water : Sources of Water Oceans and Seas Glaciers and Ice caps Soilwater and Groundwater Rivers and Lakes Air and Clouds Plants and Animals How is Water Recycled? : How is Water Recycled? The amount of water on Earth is about the same as when Earth formed over 4.5 billion years ago! Water moves from place to place in a large, complex system called the water cycle. The Water Cycle : The Water Cycle Evaporation Condensation Precipitation Motions in the Ocean : Motions in the Ocean What makes the ocean move? What makes the ocean move? : What makes the ocean move? Currents *Deep Ocean Currents *Surface Currents Tides Waves Ocean Zones : Ocean Zones Sunlit Zone- the upper zone Twilight Zone- the mid zone Midnight Zone- the deepest zone Sunlit Zone : Sunlit Zone Begins at ocean’s surface and goes down 490 ft. (150m) Sunlight brightens and heats water 90% of ocean plants and animals live here Twilight Zone : Twilight Zone Stretches from 490 ft. (150m) to 3,280 ft. (1,000m) deep Not much sunlight reaches here Water is colder and darker Fish live here, but not many plants Midnight Zone : Midnight Zone Deepest Zone Stretches from below 3,380 ft. (1,000m) to the ocean floor No light reaches this zone Completely dark and very cold Very few animals and plants live here. The Ocean Floor : The Ocean Floor Dry land has many different features *mountains, valleys, plains Ocean floor has many different features *mountains, valleys, plains Continental Shelf : Continental Shelf The outermost edge of a continent Gently sloping underwater plain Average depth of 450 ft. (137 m) Some places only a few hundred feet wide, other places extends for miles Sunlight penetrates and warms waters Rich with nutrients and marine life Continental Slope : Continental Slope Outer edge of continental shelf Drops sharply toward sea floor Averages 12,000 ft. (3,600 m) in height Abyssal Plain : Abyssal Plain Huge, flat bottom of the ocean Covered with layer of mud, sand, and animal remains drifted down from above for millions of years Mid-Ocean Ridges : Mid-Ocean Ridges Chains of mountains that run down the center of the ocean Twist and turn for 37,000 miles (60,000 km) Found in all major oceans and represent more than 20% of Earth’s surface Rift Valley : Rift Valley Deep valley along the center of some mid-ocean ridges Molten rock pushes up from center of this rift The seafloor spreads and pushes the continents apart Trenches : Trenches Long, narrow valleys cut into the seafloor Deepest part of the ocean Deepest trench is the Mariana Trench in the Pacific Ocean- 36, 198 ft. (11,033 m) deep IF Mt. Everest was in the Mariana Trench- it would be covered with water Volcanoes : Volcanoes Some ocean mountains Vents in the Earth’s surface Sometimes they rise above water The tops become islands The Hawaiian Islands are the tops Seamounts : Seamounts Volcanoes below the surface that were once above Wind and rain wore them down Water levels rose and covered them Waves wear some down so that they have flat tops- these are called guyot Ocean Plants : Ocean Plants Need sunlight and nutrients to live Plants use sunlight to live- called photosynthesis Phytoplankton is a one-celled floating plant Many fish eat phytoplankton for food Ocean Animals : Ocean Animals Zooplankton are the tiniest ocean animal- a mix of different floating animals Crustaceans are animals with outer shells- crabs and shrimp Zooplankton are food for thousands of small fish Fish : Fish OCEANS Oceans and People : Oceans and People Oceans and People : Oceans and People Oceans can be dangerous Strong storms and huge waves sink boats Storms that begin in the ocean can flood land Once people thought the world was flat, that you could sail off the edge, and that there were huge sea monsters Today we Know More : Today we Know More Ships called submarines travel underwater Divers use special equipment to breath Scientists use computers and special tools to study plants and animals Overfishing : Overfishing People catch ocean fish for food Happens when people catch too much of one kind New fish don’t have enough to eat Can endanger some sea animals Pollution : Pollution Harmful material that is added to the air, water, or soil Can kill plants and animals Oil spills are one kind Oil coats seabirds making it hard for them to move Oil spills hurt fish and other animals- most die Future of Oceans : Future of Oceans People are working to study to save oceans Some are making laws to protect oceans and the plants and animals that live there Trying to make oceans safe for the future Slide 32: THE END