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1.   Name and describe the parts of a wave.

Read page 364 “waves and beach erosion”
 - Describe 2 things that waves do to the
   land nearby?
 - What is the process called?
         Warm-up discussion
Imagine that you are at the beach, and you get
   into the water and begin swimming. Describe
   what happens if you stop swimming.
1. What does the water feel like?
2. What does the water do to your body?
3. Do you stay in the same spot? If not what

Discuss at table and elect one speaker to share
        Standard and Objective
S6E3d: Explain the causes of currents, waves and

1. What causes currents?
2. What causes waves?
3. How do waves affect humans and the surface of the
What is a current?
Currents are stream movements of ocean

          There are 2 types of currents
   surface currents- movements on the
    surface of the ocean

   deep current- underwater movements in
    the ocean
      What causes Currents

Currents are caused by Winds and
 Temperature differences of the water

Heat up- rise up
Cool down- go down
      How does temperature affect
   Cold-water currents occur as the cold
    water at the poles sinks and slowly moves
    toward the equator.

   Warm-water currents travel out from the
    equator along the surface, flowing toward
    the poles to replace the sinking cold
    Currents are Important Because….

-   They help to move boats and ships
-   The mix nutrients around the oceans
-   The bring up small organisms and plants
    to the surface so that animals like birds
    can feed on them.
Effects of waves

1.   What causes a wave?
2.   What causes surface currents?
3.   How do cold currents and warm currents
Teach someone about waves. Your teaching tool should
  include the following information

      a. What a wave is
      b. What causes waves
      c. The parts of a wave and how they are different
      d. What are 3 things that can cause higher waves
      e. What is a Tsunami and why is it so destructive
       f. how do waves shape land
      g. How do waves affect humans (good and bad)
      h. EXTRA: Research a famous Tsunami and give 5
  facts about the Tsunami and how it affected humans
  and land.

Choices: story book, power point, letter, interview

   1. What will happen if currents did not
   2. Assume that something weird occurs
    on Earth and wind no longer exists. How
    will the ocean be affected and
    subsequently how will earth's surface and
    humans be affected? Justify your answers
- currents in the 2
   hemispheres move in
   different directions.

    - Currents in the northern
     hemisphere move in a
     clockwise direction.
     (from 12- 6 o’clock, OR
     from East to West)

-    Currents in the southern
     hemisphere move in a
     counter clockwise
     direction (like going
     backwards on a clock OR
     from West to East).
    How does temperature affect
- Some currents carry warm water- warm
- some currents carry cold water- cold

Where do you think the warmest and
 coldest oceans on Earth are? (Discussion)
   Warm currents start at the
   Cold currents start at the
    north and south poles

   Therefore warm currents
    flow from the equator to
   Cold currents go from
    poles to equator

Table Discussion
          The Gulf Stream

The Gulf Stream is one of the most famous
 WARM currents.
                      What do you know?
   1. What is a current?

   2. What are the 2 types of currents AND how are they

   3a. how do currents in the north hemisphere of the
    earth differ from the movement of currents in the
    southern hemisphere?

   b. Illustrate this difference on the globe below.

   4. How do warm currents on earth move around the

   5. How do cold currents move around the earth?

   6. Why do you think warm and cold currents move in the
    way that they do around the earth?
Surface currents are caused by the
1.   Winds
2.   The Earth’s Rotation (Coriolis Effect)
3.   Temperature differences in ocean water
4.   Continents (continental Deflection)
2. Coriolis Effect

Currents move the oceans in a circular
 direction because the Earth is rotating.
 This is known as the Coriolis Effect!

Try this activity!
3. Temperature Differences
There are warm currents and cold currents.

-   Warm water wants to moves from the equator to the
-   Cold water wants to move from the poles to the equator

This creates a consistent movement of water.
- The cold water sinks to the bottom and moves towards
  the equator WHILE
- The warm water floats and moves towards the poles.
                     Current News Do you ever wonder where does magnificent
                                  currents in the oceans come from? Think no more,
                                  in this special edition of Current news we will
                                  explore these beautiful things that make the oceans
                                  fun, exciting and sometimes dangerous.

                       How do currents
What is a Current?                 Currents move
                                   clockwise in the
                                   N. Hemisphere
                                   and counter
                                   clockwise in the
                                   S. Hemisphere

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