Question 1Which of the following describes the treatment in an investigation?
the factor that is changed in order to observe a response
Question 2 Which statement best describes an independent variable?
The variable you change in an investigation
Question 3 Liam did an investigation to see how water temperature affects the amount of salt that will dissolve in the water. He filled 4 beakers with exactly 100 milliliters of water each. He then heated each beaker to a different temperature and tested salt solubility at each different temperature. What was Liam's independent variable?
the temperature of the water in each beaker
Question 4 Which of the following is an example of a treatment?
Changes made to the temperature of a greenhouse
Question 5 Jose is curious about which home remedy removes skunk smell from his dog. Which of the following is a variable that must be kept constant?
The home remedy used
Question 6 It is not important to make sure that all variables other than the independent variable are kept constant.
False
Question 7 In order to determine whether or not a substance is an acid or a base, you may stick your finger in the container and make your decision based on whether or not your finger feels slippery. False
Question 8 A poison hazard symbol means your should not let chemicals contact your skin, ingest or inhale the substance.
True
Question 9 Repeating an experiment is important because
it reduces the chance of error
Question 10 When using repeated trials during a scientific investigation, scientists should find the average of their data for use in their final report.
