Walk In Take out notebook, folder, pencil box. Copy the question and answer in sentences: How is a geological oceanographer different from a marine biologist?

Answer A geological oceanographer studies the rocks and rock formations on the ocean floor. A marine biologist studies living things in the ocean and on the shoreline.

Ocean Zones

Make your fold-up book. Fold your paper in half once, as shown in the diagrams.

Fold in half again…

Fold in half one last time… Paper has been folded so there are 8 boxes formed.

Draw over the fold lines on the front and back.

Label the boxes 1 to 8 on the front, and 9 to 16 on the back.

Write your name and period # in BOX 16.

Follow the directions on each slide that follows. Some slides tell you to take notes. Some slides are for you to read or observe. Some slides may have links to click.

Take notes in box 1 - Sunlight Zone Sunlight Zone Lots of light Warmest temperature 0-300 ft. 90% of marine life Green plants

Take notes in box 2 – Twilight Zone 300-3000 ft. Water beginning to get darker Temperature decreases Pressure increases Shark Very little light (only at top)

Take notes in box 3 – Midnight Zone Less food Less animal life Bioluminescence only light

Take notes in box 4 - Abyss Abyss Very dark Scarce food supplies Organisms grow slowly High water pressure Goes to ocean floor Most ocean floor features

Take notes in box 5 - Trenches It is a long, narrow depression on the bottom of the ocean floor. Deepest zone in ocean. Highest pressure The Mariana Trench is off the coast of Japan and is the lowest point in the ocean.

Review - read again! Ocean Zones Sunlight Twilight Midnight Abyss Closest to surface Lots of light 90% of marine life Green plants Water beginning to get darker Temperature decreases Pressure increases Very little light Less food Less animal life Bioluminescence Glow in the dark animals Very dark Scarce food supplies High water pressure Goes to ocean floor Remains of marine life from upper zones

Take notes in box 6 -Bioluminescence Bioluminescence is the production of light by a living organism. The organism gives off light and glows. It occurs in the Midnight Zone, Abyss and Trenches, since no sunlight reaches these zones. Click here to see some examples of bioluminescent creatures. Write the names of two bioluminescent creatures in box 9.

Box 7 – Take notes The Ocean Floor Oceanographers discovered the shape of the ocean floor by measuring the depth of the floor in many places. They used sonar (sound waves) and radar (radio waves) to help map the ocean floor.

Box 8 – Ocean Floor Sonar detects objects under water and measures the water's depth. Sound waves are sent from the surface. Scientists measure how long it takes the sound wave reflect from the bottom and return up. They can calculate how deep the ocean is at that point, and form a map of the ocean floor.

Draw in box 8 – Diagram of Sonar Sketch and label the diagram Step 2- Detector- Picks up reflected sound wave. Step 1 - Transducer – sends out sound wave