Science Exam

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Science Exam
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2010-06-07 23:02:26
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  1. A sound wave is an example of a ___________ wave.
    Longitudinal
  2. To measure wavelength you measure the distance from crest to crest or from trough to ________.
    Trough
  3. An echo is an example of a wave being ___________.
    Reflected
  4. A wave in a pond spreading as it passes a rock is an example of ____________.
    Diffraction
  5. Sound waves transfer energy by __________ air particles.
    pushing
  6. Your hearing can be ___________ by high intensity sounds.
    Damaged
  7. The intensity of a sound is determined by its ____________.
    Amplitude
  8. An electromagnetic wave transfers energy through a _______.
    Field
  9. The Sun is the source of _____ EM waves on Earth.
    many
  10. The Cell Cycle begins with ____________.
    interphrase
  11. A cell grows and carries out life functions in __________.
    interphrase
  12. The offspring produced by asexual reproduction are genetically _________ to their parents.
    identical
  13. Most multicelluar organisms grow and develop because their cells _________ to divide.
    continue
  14. Your genes are inherited from your ________.
    parents
  15. _______ are various forms of the same genes.
    Alleles
  16. If the genotype of one parent is GG and the genotype of the other is gg, what is the probability that an offspring will have a Gg genotype?
    100%
  17. During meiosis _______ & _____ are produced.
    Sperm&Egg
  18. A _______ square is a representation of how alleles might combine.
    Punnet
  19. Genetic engineering involves _______ an organism's genes.
    changing
  20. A clone is an organism that is genetically ________ to its parent.
    identical
  21. Refraction happens when a wave moves from one medium to ________.
    another
  22. A doctor uses ultrasound to examine _______ organs.
    internal
  23. ______ rays have the highest frequencies.
    Gamma
  24. The cell cycle ends with ______________.
    cytokinesis
  25. Your cells keep _________ even when you are an adult.
    diving
  26. If an animal has an allele for white fur, but its fur is black . The allele for white fur is __________.
    recessive
  27. A fossil is an object that contains traces, remains or evidence of ________ things from long ago.
    living
  28. According to the fossil record, the first multicellar organisms were __________.
    seaweed
  29. Natural Selection occurs due to overproduction, ___________ and variations.
    competition
  30. Snakes use to walk on land, they still have small leg bones in their body and vestigial _______.
    organs
  31. An inherited triat that gives an organism an advantage in its particular enviroment is an ____________.
    adaptation
  32. A group of organisms that live in a particular area is a ____________.
    population
  33. Ecology is the study of how living things ________.
    interact
  34. The source of energy for almost all life on Earth is ____.
    Sun
  35. An ecosystem is made up of living things and the _________ enviroment.
    physical
  36. A frog is an example of a consumerin a pond ____________.
    ecosystem
  37. After a forest fire, grasses and small shrubs begin to grow. Eventually, trees grow back this is an example of ____________ succession.
    secondary
  38. In the area around a city, large homes, mall and new roads are built. This is an example of __________ development.
    Suburban
  39. Wood is an example of a ____________ resource.
    Renewable
  40. House sparrows from England were released in the US. They have competed with native blue birds. These sparrows are an ________ species.
    invasive
  41. A substance that makes air, water, or land harmful for life is called __________.
    pollutant
  42. The endangered Species Act is a law that helps preserve _____________.
    biodiversity
  43. Sand Dunes are created by _______.
    Wind
  44. Mangroves grow in _____ water.
    Salt
  45. Human activities like habitat destruction, poaching and pollution can cause ____________.
    extinction

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