Introduction to Mid-Ocean Ridges:
Introduction to Mid-Ocean Ridges:
http://oceanexplorer.noaa.gov/edu/learning/player/lesson02.html
Name: __Melinda Vue_____________________________________________________
1: Who is NOAA?
~ NOAA is National Oceanic and Atmospheric Administrator who is a federal agency focused on the geologic and biologic of the deep sea.
2: What is the mid-ocean ridge system? What happens there?
~ The mid-ocean ridge system is where new ocean crust of North America is created. Ring of Fire is one segment of the massive mid-ocean ridge system.
3: How long/wide the is mid-ocean ridge system? Where is it located?
~ The mid-ocean ridge system is a 65,000 km long series of sea-floor spreading centers (where new earth is creates) It is located in North America.
4: What type of plate boundary forms a mid-ocean ridge system? Explain.
~ Plate boundary divergent forms a mid-ocean ridge system, where the earth's oceanic plates are torn apart.
5: Explain how ridges form:
~ Ridges form when two pieces of the earth's crust pulls away from each other and a new seafloor is created.
6: What forms most of the ocean crust?
~ Most of ocean crust from divergent plate tectonics form rift valleys.
7: How does hot lava respond to cold sea water? (Pillow Basalt)
~ Most of the hot lava oozes up, then cools, and solidifies while still within the plate
8: What is happening at the Juan de Fuca Ridge?
~ At the Juan de Fuca Ridge the spreading process creates an average width of 6m of new crust every hundred years.
9: What does the rate of spreading dictate?
~ The rate of spreading indicates by influences/persuades the topography of the ridge.
10: How hot can sea water be heated to at the mid-oceanic ridges?
~ Hot sea water can be extremely hot by 400 degrees Celsius at the mid-oceanic ridges.
11: Explain how HYDROTHERMAL Vents are formed:
~ Hydrothermal vents are formed by having seawater sweep into the ocean crust, gets heated up very hot, the hot water dissolves the minerals, and circulates with them through the crust. Then the mineral water rises out of the crust and boils into the bottom of the sea through ocean floor hot springs.
12: Why is the hot mineral water so important? What do they support?
~ Hot mineral water is important, because it nourishes fonts that is independent on solar energy by hydrothermal vents.
13: What is chemosynthesis? How does it differ from photosynthesis?
~ Chemosynthesis is convert minerals into energy. It is different from photosynthesis, because photosynthesis converts light into energy.
http://oceanexplorer.noaa.gov/edu/learning/player/lesson02.html
Name: __Melinda Vue_____________________________________________________
1: Who is NOAA?
~ NOAA is National Oceanic and Atmospheric Administrator who is a federal agency focused on the geologic and biologic of the deep sea.
2: What is the mid-ocean ridge system? What happens there?
~ The mid-ocean ridge system is where new ocean crust of North America is created. Ring of Fire is one segment of the massive mid-ocean ridge system.
3: How long/wide the is mid-ocean ridge system? Where is it located?
~ The mid-ocean ridge system is a 65,000 km long series of sea-floor spreading centers (where new earth is creates) It is located in North America.
4: What type of plate boundary forms a mid-ocean ridge system? Explain.
~ Plate boundary divergent forms a mid-ocean ridge system, where the earth's oceanic plates are torn apart.
5: Explain how ridges form:
~ Ridges form when two pieces of the earth's crust pulls away from each other and a new seafloor is created.
6: What forms most of the ocean crust?
~ Most of ocean crust from divergent plate tectonics form rift valleys.
7: How does hot lava respond to cold sea water? (Pillow Basalt)
~ Most of the hot lava oozes up, then cools, and solidifies while still within the plate
8: What is happening at the Juan de Fuca Ridge?
~ At the Juan de Fuca Ridge the spreading process creates an average width of 6m of new crust every hundred years.
9: What does the rate of spreading dictate?
~ The rate of spreading indicates by influences/persuades the topography of the ridge.
10: How hot can sea water be heated to at the mid-oceanic ridges?
~ Hot sea water can be extremely hot by 400 degrees Celsius at the mid-oceanic ridges.
11: Explain how HYDROTHERMAL Vents are formed:
~ Hydrothermal vents are formed by having seawater sweep into the ocean crust, gets heated up very hot, the hot water dissolves the minerals, and circulates with them through the crust. Then the mineral water rises out of the crust and boils into the bottom of the sea through ocean floor hot springs.
12: Why is the hot mineral water so important? What do they support?
~ Hot mineral water is important, because it nourishes fonts that is independent on solar energy by hydrothermal vents.
13: What is chemosynthesis? How does it differ from photosynthesis?
~ Chemosynthesis is convert minerals into energy. It is different from photosynthesis, because photosynthesis converts light into energy.