Science Studies

Coral Reef Coloring Book by Ruth Soffer

By Ruth Soffer

In the shallow, hot waters of the Caribbean, South Pacific, and different seas, coral reefs building up as aggregates of the skeletons of numerous coelenterates, normally coral polyps. those reefs teem with a large number of animals. the bright shade of a number of the existence kinds inhabiting the reef deals particular pleasure and problem to colorists, who can convey this undersea global to lifestyles via coloring forty four reasonable drawings.
Depicted here's a host of marine creatures for whom the coral reef is domestic: seahorse, butterflyfish, hawksbill turtle, parrotfish, octopus, damselfish, moray eel, sea cucumber, dolphin, hydromedusa jellyfish, sea dragon, royal empress angelfish, triggerfish, Moorish idol, and lots of extra. particular captions offer a desirable assessment of the nice variety of existence on coral reefs.

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3. Find this out also for the dried oil paint and for the slime that you made. Explain the results. ● Make a film out of Elmer’s Glue-all or Elmer’s White Glue. Under adult supervision, find out if it is a thermosetting or a thermoplastic polymer. How does it compare to the slime that you made from the glue? ● Obtain a glue stick that melts below the boiling point of water. Repeatedly, melt a piece of it and allow it to harden again. What changes, if any, do you observe in the plastic? 3 Some Polymers Like Water Materials ✓ safety goggles ✓ colorless, wide-mouth, ✓ 1 medium-sized dispos✓ ✓ ✓ ✓ ✓ able baby diaper scissors white sheet of paper stapler measuring cup tap water ✓ ✓ ✓ ✓ ✓ quart-sized glass jar glass-marking pen small cup teaspoon table salt sink Most polymers are insoluble in water.

Rinse the solid with running water from the sink. You can now safely handle the solid with your fingers. Roll it into a ball. 59 Plastics and Polymers Science Fair Projects Discard the acetone down the drain with the water running and allow the water to run for at least half a minute afterward. Put the ball down on the sink counter. Did the acetone dissolve the Styrofoam? You have completed the experiment and may remove the safety goggles. The polystyrene (not expanded) did not dissolve in acetone, but it may have softened a bit.

Lift the sample out of the acetone with a metal spoon. Scratch the sample with your nail to see if it has softened. After the test is completed, rinse the polystyrene sample with water and discard it into the recycling bin or waste basket. Pour the used acetone down the drain with the water running. Rinse the jar with water and pour the water down the drain. Keep the water running for at least a half minute. Did the polystyrene dissolve? Did you detect any change in it? Next, the test with acetone will be repeated on Styrofoam.

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