Your Islands
Now let’s move on to your island maps…
Add to Your Island…
Look at your island map.Identify and List at least10 landforms on your island.
If you have less than 10, modify some of your contour lines to show at least ten landforms.
Winds will tell you where your rivers and lakes will form on your island.
Let’s look at how the wind effects your island.
Wind Patterns
Wind
Global Wind Patterns
Rivers flow DOWNHILL!• Make sure your
rivers flow from areas of higher elevation to lower and the forks should join as the water flows downhill
• Notice the small branches joining together in this V-Shaped valley
How do you show a V-Shaped valley on a topo map?
V-Shaped Valleys
• To show a V-Shaped valley….your contour lines need to make a “V” pointing uphill when they cross your rivers
• Here is a good example of how a number of contour lines point upstream (and uphill) where they cross the creek
Global Wind PatternsChange your Island as a result of the wind patterns in your location.
For example…
Wind Patterns
Deltas
Notice that a delta also forms where the river empties into the sea.
Deltas
In Greek, Delta is a letter of the alphabet written with a triangle. A river delta also often takes the shape of a triangle.
Winds will also tell you where the waves will crash into your island – this shapes your island.
This is called the windward side of your island.
Wind Patterns
Wind
This is called the windward side of your island.
Wind Patterns
Winds
You often get cliffs to form on the windward side of your island
Wind Patterns
Erase and adjust the contour lines along the windward side of your island to show this.
Winds
Global Ocean Currents
Ocean Currents!
Ocean Currents determine where the beach is on your island. The ‘protected’ side of your island is where beaches occur.
Ocean Currents
Ocean Currents
Ocean Currents!
Ocean Currents determine where the beach is on your island. They also show where the waters are shallower and deeper off the coast of your island.
Ocean Currents
Ocean Currents!
More Examples…
Ocean Currents
Ocean C
urren
ts
Draw two dotted lines around your island to show where the waters are shallower and deeper around the coast.
When you are all done with everything, pick up a checklist to make sure everything has been done.
Last item to add to your island…
Global Ocean Currents
Change your Island as a result of the ocean currents in your location.
For example
Ocea
n Cur
rent
s
Re-Draw your Island Map
Now that all your changes have been made, it’s time to re-draw your island on a nice, clean sheet of paper.
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