What does the ocean floor look like Halifax

What does the ocean floor look like? Halifax Canada ***** Soulac France

Warm –up January 10 th Imagine you are able to travel from Halifax in Canada to Soulac in France by walking along the bottom of the Atlantic Ocean. ******* Illustrate what you believe the ocean floor would look like if you travelled the route above **. (2 pts)

Opening: Ocean Topography • In your notebook below your illustration please explain what you think topography means. Hint: Break the word into parts Vocabulary- Topography means…. (2 pts) Copy this standard into your notes (1 pt) Standard: Describe the sub-surface topography of the world’s oceans

Unpacking the standard • If Top means surface and graph means to write then topography means… to·pog·ra·phy /təˈpɒg rə fi/ Show Spelled [tuh-pog-ruh-fee] Show IPA noun, plural to·pog·ra·phies. 1. the detailed mapping or charting of the features of a relatively small area, district, or locality. 2. the detailed description, especially by means of surveying, of particular localities, as cities, towns, or estates. 3. the relief features or surface configuration of an area. 4. the features, relations, or configuration of a structural entity.

Work Session: Topography Lab activity • You will work in pairs to graph the features of the ocean floor. Every group is different! Please work with your partner to the best of your abilities! • PLEASE do not write on class sets of instructions, just graph paper and response sheets • TIME is limited so work together…

Work Session: Graphing coordinate pairs • In MATH you may have graphed a pair of numbers & then connected the dots to form an image • Today these number pairs represent the OCEAN DEPTH and the LONGITUDE • YOU may need to set up your graph paper, with Depth on the left Starting with zero and increasing depth BELOW sealevel, and Longitude along the bottom going from 64 degrees West to 1 degree West. • ASK if you need help….

Two types of crust • Granite makes up the ____ crust while Basalt makes up the _____ crust. • This creates two regions of the ocean floor ~ continental margin made of granite and deep ocean basin made of basalt.

Continental/Coastal margin • Continental Shelf • Continental slope • Continental rise

Continental margin Continental Shelf Ø The gentle sloping section of the continental margin between the shore and the slope.

Continental margin Continental slope Ø The steeply inclined section of the continental margin located between the continental rise and the continental shelf.

Continental margin Continental rise Ø The gentle sloping section of the continental margin between the slope and the abyssal plain.

Deep Ocean Basin • • • Abyssal Plain Mid ocean ridge Rift valley Seamount Ocean trench Continental Margin V

Deep Ocean Basin Abyssal Plain Ø A large, flat, almost level area of the deep Ocean Basin Continental Margin V

Deep Ocean Basin Mid ocean ridge Ø A long undersea mountain chain that forms along the floor of the major oceans Continental Margin V

Deep Ocean Basin Rift valley Ø A long Narrow valley that forms as tectonic plates separate. Continental Margin V

Deep Ocean Basin Seamount Ø A submerged mountain on the ocean floor that is at least 1, 000 m high and that has volcanic origin. Continental Margin V

Deep Ocean Basin Ocean trench Ø A steep long depression in the deep-sea floor that runs parallel to a chain of volcanic islands or a continental margin. Continental Margin V

The Ocean Floor This creates two regions of the ocean floor Continental Margin Deep Ocean Basin V

Ocean Topography Foldable • • • • INSTRUCTIONS: Ocean Topography Foldable Fold the paper in half, hotdog style, so you are covering up the picture with the top half of the paper. Cut along each of the lines making 7 tabs. Label the outside of each tab so when you open the tab, the picture of the ocean floor feature is under the tab. Write a description of each ocean floor feature on the backside of each tab so you can see a definition when they are looking at the picture of the feature. Continental Shelf Continental Slope Seamount Mid-Ocean Ridge Volcanic Island Abyssal Plain Trench