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Natalie Stake-Mitchell 13 questions

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Questions in this quiz (13)

  1. 1A researcher has designed an experiment intended to determine the effect of a soil additive on the growth rate of plants. Fifty corn plants are being grown in a greenhouse in which the air temperature and humidity are kept constant. The additive is dissolved in water and then spread on the soil in which the plants are growing. The additive is applied to the plants’ soil weekly. A second group of fifty plants acts as an experimental control group. The control group should differ from the experimental group in which of the following ways?
    1. APlants in the control group should be given water with no dissolved additive on a weekly basis
    2. BThe control group should be given a different soil additive that is also dissolved in water
    3. CPlants in the control group should be a species other than corn
    4. DThe control group should be kept in a greenhouse in which temperature and humidity are varied
  2. 2Which of the following units is most appropriate for reporting a species’ population density?
    1. ANumber of organisms
    2. BOrganisms per square meter
    3. CBirth Rate per year
    4. DRatio of males to females
  3. 3Which of the following is most likely to provide the most complete source of information on the hazards associated with a newly purchased chemical reagent?
    1. AThe Handbook of Chemistry and Physics
    2. BInformation printed on the reagent’s bottle
    3. CA recently published chemistry textbook
    4. DA Safety Data Sheet (SDS) for the reagent
  4. 4A study has an accuracy of 90% with a confidence interval of ±1.5%. What is the range of the study’s accuracy?
    1. A88.5%-90.0%
    2. B88.5%-91.5%
    3. C89.0%-91.0%
    4. D90.0%-91.5%
  5. 5A researcher collects 50 plants of a particular species near the top of a mountain and 50 plants of this same species near the base of the mountain. He notes that the average height of the higher-elevation plants is greater than the average height of the lower-elevation plants. He also notes that this finding is inconsistent with other research in the field for other species of plants. The researcher notes that the lower elevation has a population of grazing animals that could be putting selective pressure on the species. Which of the following statements by the researcher would most likely be based on evidence?
    1. AMost plants growing at higher elevation have a greater average height than those growing at lower elevations
    2. BGrazing animals near the mountain’s lower elevation are the reason for the differences in plant heights
    3. CThe average height of the subject species is greater near the top of the mountain than near the base
    4. DThe relationship between plant height and elevation is true only in the absence of strong predatory pressures
  6. 6A calorimeter is used to measure
    1. ASpecific gravity
    2. BMass
    3. CHeat capacity
    4. DTemperature
  7. 7Which of the following components of an experimental design is intended primarily to minimize the effects of personal biases of researchers on the recording and reporting of experimental data?
    1. ADigital recording equipment
    2. BComputer modeling
    3. CDouble blind design
    4. DControl group
  8. 8Which of the following discoveries about light was made in the early part of the 1900s by scientists Max Planck and Albert Einstein?
    1. AThe speed of light is different in different optical materials
    2. BLight behaves as both a particle and a wave
    3. CThe color of light is related to its frequency
    4. DLight is just a small segment of the electromagnetic spectrum
  9. 9Albert Wegener is best known for his contribution to the development of which of the following concepts?
    1. AGenetic basis of heredity
    2. BThe universal gas law
    3. CContinental drift
    4. DThe big bang
  10. 10In a closed system, an input of energy is required to increase the orderliness of the system. This relationship is most closely related to which of the following concepts?
    1. AConservation of energy
    2. BEntropy
    3. CKinetic theory
    4. DPower

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Training and Development Manager Science OAE Quiz on Untitled, created by Natalie Stake-Mitchell on 09/04/2021.
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