Hands-on-science: (no lab required).After reading "Life on the Edge" (p.8), try this activity to learn how a loss of sea ice could affect the world's oceans. PREDICT Is there a significant difference between the amount of heat energy absorbed Absorbed 1. In a general business sense, when a cost is treated as an expense instead of being passed on to the customer in the form of higher prices. 2. In underwriting, when an issue has been completely sold to the public. 3. by white paper versus that absorbed by black paper? MATERIALS notebook paper * pencil * 2 thermometers * sheet of black construction paper * sheet of white construction paper * stapler sta·pler 1 n. One who deals in staple goods or staple fibers. stapler Noun a device used to fasten things together with a staple Noun 1. * sunny windowsill, or a light with a 100-watt bulb bulb, thickened, fleshy plant bud, usually formed under the surface of the soil, which carries the plant over from one blooming season to another. It may have many fleshy layers (as in the onion and hyacinth) or thin dry scales (as in some lilies)—both of which * clock or watch DIRECTIONS 1 On a sheet of notebook paper, record the temperature that appears on one of the thermometers. 2 Create a thermometer thermometer, instrument for measuring temperature. Galileo and Sanctorius devised thermometers consisting essentially of a bulb with a tubular projection, the open end of which was immersed in a liquid. pocket: Place one thermometer on a piece of black construction paper. Fold the paper in half over the thermometer. Staple the sides of the construction paper so that the paper stays flat against the thermometer. 3 Repeat Steps 1 and 2 with the sheet of white construction paper and the second thermometer. 4 Place the construction-paper pockets, with their thermometers tucked inside, on a sunny windowsill. If the sun isn't is·n't Contraction of is not. isn't is not isn't be shining, place them directly under a light with a 100-watt light bulb. 5 Allow the thermometer pockets to rest undisturbed un·dis·turbed adj. Not disturbed; calm. undisturbed Adjective 1. quiet and peaceful: an undisturbed village 2. for approximately 10 minutes. 6 After roughly 10 minutes, remove the thermometers and record their temperatures. CONCLUSIONS 1. Which thermometer had a greater change in temperature: the one inside the black construction paper, or the one inside the white paper? 2. Of the two construction-paper pockets, which one absorbed the most heat energy from the light source? Which one reflected the most heat energy? 3. Which color paper best simulates an ice-covered ocean? Which simulates an ice-free ice-free adj. 1. Free of ice and open to travel or navigation: an ice-free channel in the river. 2. ocean? Why? 4. Based on your observations, how Would melting sea ice affect the amount of heat energy absorbed by Earth's oceans? Explain. Answers 1. The thermometer tucked inside the black construction paper had a greater change in temperature. 2. Of the two construction-paper pockets, the black one absorbed more heat energy from the light source The white one reflected the most heat energy. 3. The white paper best simulates an ice covered ocean That's because ice is lighter in appearance than the ocean. The black paper best simulates the darker, ice free ocean. 4. As the melting of ice increases, Earth's oceans will absorb absorb To offset sell orders or a new security offering with buy orders. a larger amount of heat energy. That's because ice helps reflect heat energy. With less ice covering the oceans, more heat energy will be absorbed by the oceans |
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