light can undergo refraction as seen in a pencil in a glass, diffraction as seen in a shadow or polar true false

Related Questions

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• witch best illustrates the result of the process of meoisis?
• Which statement best supports the theory of evolution as a reliable explanation for the diversity of life? Scientists observed that many species have homologous structures. The original proposers of evolution had a huge amount of evidence. Scientists found that some traits are inheritable. It is the theory taught at the best research institutions.
• When conducting scientific research or experimentation, researchers carefully analyze and evaluate results to determine a valid conclusion. A scientist conducts an experiment to determine how different brands of fish food affect tropical fish growth. The scientist determines that all of their fish grow better when fed a specific brand of fish food. Why would it be important to question the results of this experiment? a. it may be incorrect b. it may be based on opinions c. information can be biased d. all of the above
• You are conducting an experiment to determine if increased ultraviolet radiation from the decrease in the ozone layer is killing off frog tadpoles. After examining all of the data available in the library, you decide to go with a hypothesis that increased ultraviolet radiation from the sun is killing off the tadpoles. You design an experiment with a control and an experimental group. Group 1 involves 100 tadpoles in a five gallon container of water, which is covered by glass (knowing that the glass will filter out the ultraviolet radiation). Group 2 will be set up exactly like group 1, except that instead of being covered with glass, it is covered with an acrylic plexiglass, which will not filter out the U.V. radiation. You then place the groups outside for a period of a month, and observe the results. Results Group 1 Group 2 Number of tadpoles 100 100 started with Number finished 96 96 Using this information, answer the following questions. a. What is the experimental variable and what is the dependant variable? b. Does the information from this experiment support the hypothesis? c. If no, then what might be causing the decrease in frog populations? d. Which is the control group, and which is the experimental group? e. What is the difference between the two groups? Should they be different in any other way?
• What percentages make up glaciers and ice sheets?
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