Scope of Lesson: The general focus of this lesson is to get them to think about the overall effect tides have on the earth.

Instructional Objectives:
1-- Students will be able to explain what tides are and describe how they are controlled
2--Students will be able to illustrate and discuss the different tide pool animals
3--Students will be able to specify how hurricanes are formed from tides and describe the damages the storm creates
4--Students will be able to repeat and identify the four oceanic tides
5--Students will be able to tell about the fun activities that are associated with tides

What tides are and how they are controlled


Tides are regular occuring variations in the surface water level of the ocean, bays, gulfs, and inlets. Tides are the result ofthe gravitational attraction of the sun and moon on the earth. The attraction of the moon is geater than the attraction of the sun due to the close proximity of the earth and the moon.
Because of the physical attraction of the moon and sun that produce the tidal system, there are low tidal zones, middle zone, high zones, and splash zones.

Highest and Lowest tides happen every two weeks during a full moon and new moon, because the gravitational force of the moon and sun are pulling on the ocean water. There are two high tides and two low tides during a day (24 hrs)

High tide: When the sun and moon are lined up with the earth they have a great gravitational pull on the earth, which pulls the water away from the earth.

Lowtide: When your part of the world is not lined up with the moon, this causes low tides.

Go to the web site Tides and answer the questions

1. Explain what gravitational force is and provide an example.

2. What kind of gravitational force is happening when the earth is not lined up with the moon and sun. What is this gravitional force affecting?

3. Why do you think high and low tides happen every two weeks during a full and new moon? Why can't it be a half moon or an old moon?

4. Explain why there are two high tides and two low tides during a day (24 hrs).

5. If you lived by an ocean and noticed it had very low tides that day, which direction would your environment be facing (North, South, East, or west) of the moon and sun. Draw a picture.

Tide Pool Animals

Different tide pool animals come in with different tides of low-level, mid-level, high-level, and splash zone tides.

Low-Level Zones: crabs, sculpins, sea urchins, abalones, barnacles, anemones, octupus, sea star, and lobsters.

Mid-Level Zones: goose barnacles, musels, chitans, sea sacks, and ochre stars.

High-Level Zone: periwinkles, limpets, shore crabs, and turban snails.

Splash Zones: periwinkles and limpets

Tide Pool Animals

In Fun Stuff do the activities:

1. "What am I" answering all 18 questions

2. "Color Book" activity and print out three sea creatures to color

3. "Quiz" activity answering the Lobster quiz and the Sea star quiz

4. Detect why animals in splash zones can stay out of the water longer than animals in low tidal zones.

5. Explain why there are less tide pool animals in the splash zone.

Hurricanes

Hurricanes are storms that originate in the tropics and begin by samll cloud storms that gain energy from the heat of the ocean water. If the storm continues to feed off the heat supplied by the ocean, cloud clusters will intensify, and winds increase and circulate around the center, the eye.

Go to the website Hurricanes Observe and analyze these pictures and write a journal describing your emotions as if you were caught in a hurricane and explain how destructive hurricanes can be!

The Four Oceans

1. Artic Ocean: Smallest of the worlds oceans and is ice covered all year round. Subfreezing temperatures causes little marine life to exist.

2. Indian Ocean: Third largest body of water in the world covering 20 percent of the Earth's water surface. It is a major transit route between Asia and Africa.

3. Atlantic Ocean: Second largest of the worlds ocean that is divided into North. Atlantic and South Atlantic by equatorial counter currents.

4. Pacific Ocean: Worlds largest body water, occupies a third of the earths surface. The Ocean floor of the Pacific is relatively uniform- steep sided and flattopped.

Go to the WebsiteOceans and answer these questions:

1. Look at the ocean pictures and describe how each ocean differs from eachother.

2. Describe the temperatures of the oceans.

3. Identify the ocean that is closest to your part of the world and desribe the ocean in detail.

4. Match each ocean to the continent it is closest to.

5. Describe each oceans importance to the continents it is closest to.

Surfing




Surfing is a fun and intense sport in the warmer regions such as california

Go to this websight Surfing and write a journal describing your emotions of excitement and thrill as if you just collided with a huge tide in California.

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