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Semester Review

Semester Review

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Semester Review

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Presentation Transcript

  1. Welcome To Semester Review

  2. Today's Topic NEXT

  3. Nature Of Science NEXT

  4. Matter NEXT

  5. Cycling Of Matter and Energy NEXT

  6. Big Board Review 5 5 10 15 20 25 30 5 10 15 20 25 30 5 10 15 20 25 30 5 20 10 15 25 30 5 15 20 10 25 30 Player Scores Player One Player Three Player Two Player Four

  7. Question for 5 Points ______________ is the name for the observations and data on which a scientific explanation can be tested. Show Answer

  8. Answer for 5 Points Empirical Evidence Back to Board

  9. Question for 10 Points ___________ is a belief or practice that is based on incorrectly applied scientific methods based on faulty logic and supported by claims that cannot be tested. Show Answer

  10. Answer for 10 Points Pseudoscience Back to Board

  11. Question for 15 Points What are two types of scientific investigations? Show Answer

  12. Answer for 15 Points Field work and experiments Back to Board

  13. Question for 20 Points Astrologers relate the location of stars and planets to events in human lives. Many years ago, people classified astrology as a science. Why do modern scientists consider astrology to be a pseudoscience? Astrology does not involve the use of telescopes. Astrology does not offer conclusive proof of its claims. Astrology is based on observations of extremely distant objects. Astrology is not supported by empirical science. Show Answer

  14. Answer for 20 Points D. Astrology is not supported by empirical science. Back to Board

  15. Question for 25 Points A physician performed an experiment to investigate the effects of exercise on students. He examined 25 volunteers and found them to be in good health. He then had the students perform exercises such as jogging and bicycling. The doctor recorded the students’ pulse rates before, during, and after each activity. Which was the dependent variable in this experiment? The students’ health The exercise The number of volunteers The students’ pulse rates Show Answer

  16. Answer for 25 Points The students’ pulse rates Back to Board

  17. Question for 30 Points In 1897, Joseph Thomson discovered that atoms contained electrons. He proposed a change in the atomic theory of that time, and the theory was modified because of his discovery. Since Thomson’s discovery, the atomic theory has been further modified. What is the best explanation for why scientific theories are modified? Theories more than ten years old are usually out of date. Scientists want to prove that the work of other scientists are wrong. New evidence that supports a revision prompts scientists to modify earlier theories So much information is available today that is is harder to focus research and disprove theories. Show Answer

  18. Answer for 30 Points New evidence that supports a revision prompts scientists to modify earlier theories Back to Board

  19. Question for 5 Points __________ is the systematic study of the natural world. Show Answer

  20. Answer for 5 Points Science Back to Board

  21. Question for 10 Points Scientists never say a theory is proven or not. They only say if the evidence __________ or __________ it. Show Answer

  22. Answer for 10 Points Support; fail to support Back to Board

  23. Question for 15 Points Ana did an experiment to find out whether spider plants grow faster under fluorescent lighting or incandescent lighting. Under fluorescent lighting, Ana’s plants grew 1.5 cm taller in two months. She gave her notes to Al, who did the same experiment with similar results. Which term describes Al’s experiment? Plagiarism Replication Pseudoscience repetition Show Answer

  24. Answer for 15 Points Replication Back to Board

  25. Question for 20 Points Scientific investigations involve many steps and processes. Which characteristics define a laboratory experiment? Hypothesis, models, and calculations Test variables, data, and uncontrolled conditions Data, conclusions, and unregulated environment Independent and dependent variables, data, and controlled conditions Show Answer

  26. Answer for 20 Points Independent and dependent variables, data, and controlled conditions Back to Board

  27. Question for 25 Points Which of the following is an example of how economics can affect science? Limited funding may lead scientists to research one topic instead of another. Legislators may create new laws about the use of natural resources based on the recommendations of scientists. A health crisis may drive scientists to prioritize research on new medications or vaccines. Community leaders may use scientific data to support a recommendation for costly pollution clean-up. Show Answer

  28. Answer for 25 Points Limited funding may lead scientists to research one topic instead of another. Back to Board

  29. Question for 30 Points Imagine that the label on a sunscreen product reads “Recommended by nine out of ten doctors” No other information regarding this claim is provided. Why would a scientist tell a consumer to be vary of this claim? Sunscreen products are ineffective The supporting scientific data are missing The claim cannot be confirmed or refuted The claim cannot be reevaluated when new information emerges Show Answer

  30. Answer for 30 Points The supporting scientific data are missing Back to Board

  31. Question for 5 Points A good theory is often ______________ with new evidence but rarely discarded. Show Answer

  32. Answer for 5 Points modified Back to Board

  33. Question for 10 Points A _____________ is the factor that is deliberately changed in an experiment Show Answer

  34. Answer for 10 Points Independent variable Back to Board

  35. Question for 15 Points Gordon places a piece of zinc metal in a beaker containing hydrochloric acid. He identifies the products a zinc chloride and hydrogen gas. Which process took place in the beaker? Evaporation Condensation A physical change A chemical change Show Answer

  36. Answer for 15 Points A chemical change Back to Board

  37. Question for 20 Points Rita wants to make some toast for breakfast. She puts a slice of bread in the toaster. After 3 minutes Rita notices that the sides of the bread are black. What has happened? The bread has undergone a change of state The bread has undergone a change in density Some of the matter in the bread was destroyed New substances have formed as the result of a chemical change. Show Answer

  38. Answer for 20 Points New substances have formed as the result of a chemical change. Back to Board

  39. Question for 25 Points Density is the ratio of mass to volume. Troy listed the density of four metals at 20° C. If Troy has a 4-cm cube of each of these metals, which cube will have the greatest mass? Brass Gold Iron lead Show Answer

  40. Answer for 25 Points Gold Back to Board

  41. Question for 30 Points It is important to understand the difference between chemical and physical changes. Chemical changes result in new substances, but physical changes do not. Which process is an example of a physical change? Water turns to steam when boiled over a Bunsen burner. Carbon combines with oxygen to form carbon dioxide gas Water breaks down into hydrogen and oxygen gases Limestone breaks down into lime and carbon dioxide Show Answer

  42. Answer for 30 Points Water turns to steam when boiled over a Bunsen burner. Back to Board

  43. Question for 5 Points Define repetition Show Answer

  44. Answer for 5 Points Repetition occurs when scientists repeat their own experiments Back to Board

  45. Question for 10 Points The ____________ variable in an investigation is the variable that changes in response to changes in the investigation. Show Answer

  46. Answer for 10 Points dependent Back to Board

  47. Question for 15 Points There is a connection between photosynthesis and cellular respiration. The products from one provide the raw materials for the other. What products of photosynthesis are the starting materials for cellular respiration? Glucose and oxygen Heat energy and ATP Carbon dioxide and water Light energy and chlorophyll Show Answer

  48. Answer for 15 Points Glucose and oxygen Back to Board

  49. Question for 20 Points Jamal is running a race this afternoon. He eats a big breakfast to make sure that he can reach the finish line, since food provides the energy his cells need to complete any activity. What form of energy is stored in food? Chemical energy Kinetic energy Light energy Mechanical energy Show Answer

  50. Answer for 20 Points Chemical energy Back to Board