Science CH 1

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Author:
Rayna
ID:
281096
Filename:
Science CH 1
Updated:
2014-09-05 12:14:57
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Science
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Science
Description:
A Beka Science
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  1. Science:
    the study of the matter and movement of God's physical creation
  2. What is the study of soil?
    Pedology
  3. What are the six steps of the Scientific method?
    • 1.  State the problem
    • 2.  Gather information
    • 3.  formulate a hypotheses
    • 4.  Test the hypotheses
    • 5.  Record and analyze
    • 6.  State the conclusions
  4. Scientific law:
    If a theory that has never be proven false.
  5. What group in an experiment is used as the standard for comparison?
    control group
  6. The condition that stays the same for all groups in an experiment?
    a constant
  7. The amount of matter in an object?
    mass
  8. The layer directly beneath the topsoil?
    subsoil
  9. The way of explaining an event by using a set of facts?
    theory
  10. The reusing of old materials?
    recycling
  11. What is the best soil for plants to grow?
    loam
  12. Name three important minerals(plant food) for plant growth?
    • nitrogen
    • potassium
    • phosphorus
  13. Term referring to a group of chemicals containing phosphorus bonded to oxygen and other elements?
    phosphates
  14. Cart that provides pedologists with soil names and colors?
    Munsell
  15. What scale do chemists use to determine acidity or basicity?
    pH scale
  16. The primary plant food element that stimulates growth of stems and leaves?
    nitrogen
  17. What word means "a nourishing substance"?
    nutrient
  18. Term for substance containing two or more elements bonded together?
    compound
  19. Nitrogen-fixing bacteria converts atmospheric nitrogen into nitrogen compounds, that include what two elements?
    ammonia and nitrates
  20. What elements main function is to contribute to the general health of plants and improve disease resistance?
    potassium
  21. Term for a substance composed of only one type of atom?
    element
  22. What element makes fruits "firm up" properly?
    phosphorus
  23. What is the nitrogen cycle?
    system that moves nitrogen from the atmosphere(air) to the soil for plants to use then it is returned to the atmosphere to be used again
  24. What does a good scientific experiment include?
    several constant factors and one variable
  25. What must soil contain to drain well and not retain excess water?
    sand
  26. Humus is formed as a result of what?
    decomposition
  27. What type of soil contains a mixture of sand, silt, clay and humus?
    loam
  28. Name the primary plant food element found in the ashes of burned fruits?
    potassium
  29. What substance would have a pH of 10?
    basic
  30. The upper surface of ground water is the?
    water table
  31. Term for soil and porous rock that cannot hold any more water?
    saturated
  32. Any soil material primarily derived from living organisms?
    organic
  33. Any soil material primarily derived from nonliving matter?
    mineral
  34. Term for the breakdown of organisms?
    decompose
  35. Term for the top 2 to 6 inches of soil?
    topsoil
  36. Term for the layer of solid rock below the soil?
    bedrock
  37. What measures the amount of matter in an object?
    mass
  38. What measures the pull of gravity on an object?
    weight
  39. What plant food element would a farmer apply when his crop begins to ripen?
    phosphorus
  40. Lightning, nitrifying bacteria and nitrogen-fixing bacteria come together to form what?
    nitrates
  41. What measures how tightly packed matter is?
    density
  42. Term for the sensible explanation to a scientific problem?
    hypothesis
  43. Term for the facts and information that is recorded by scientists who perform experiments?
    data
  44. What is the upward movement of water through a tiny space in response to surface tension?
    capillarity
  45. What are the air pockets called that are found in the soil?
    pore spaces
  46. What is the most basic unit of matter?
    atom
  47. What is a "self-pumping" well?
    artesian well
  48. What is the substance of the physical world called?
    matter
  49. What is an area of ground water collected in a layer of rock or soil?
    aquifer
  50. Why is the nitrogen cycle important?
    because plants cannot use the form of nitrogen in the air unless it is combined with other elements to form certain compounds.
  51. Describe a way nitrogen compounds are formed.
    1. nitrogen compounds are formed by nitrogen-fixing bacteria

    2. nitrates are formed by lightning causes nitrogen and oxygen to form compounds carried to the soil by rain.

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