Why is it important to have control experiments in addition to the tests being conducted? a.To determine if there was unwanted contamination. b.To determine if experiment yielded an expected result. c.Neither A or B are correct. d.Both A and B are correct.
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Why is it important to have control experiments in addition to the tests being conducted?
a.To determine if there was unwanted contamination.
b.To determine if experiment yielded an expected result.
c.Neither A or B are correct.
d.Both A and B are correct.
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- A student transplants four plants and measures their heights. For the next month, the student gives the plants different amounts of water. After one month, the student measures the height of the plants again. Height At End (cm) Amount of Amount of Height at Start (cm) Water Weekly Sunlight Daily (L) (hrs) Plant 1 0.7 8. Plant 2 0.1 8 Plant 3 0.5 8. 6.5 Plant 4 0.3 85 8 5555I answered with a and c but keep getting told its the wrong answer. Which of the following is not a component of effective experimental designs in the early stages of a scientific study? Select one or more: a. small sample sizes b. experimental groups taking a placebo c. double blind experiments d. short duration e. animal models f. repetitive testingWhich of the following is used when testing a prediction?a. observationsb. inductive reasoningc. controlled experimentsd. both observations and controlled experiments
- Create a schemetic diagram of the experimental procedures down below (Also, attached below is a copy of an example of a schematic diagram)Daisy accidentally broke the test tube after the calibration step. What should she do?a. Borrow the calorimeter of his labmate and use that in the next step of the experiment.b. Replace the test tube and proceed with the experiment.c. Replace the test tube and recalibrate.A controlled experiment ________. A. includes one group for which the scientist controls all variables B. is repeated many times to ensure that the results are accurate C. includes at least two groups, one of which does not receive the experimental treatment D. includes at least two groups, one differing from the other by two or more variables
- (1 question with multiple steps please answer) Identify the component characteristics of a scientific investigation Suggest alternative hypotheses that could be tested by the design Evaluate the validity of conclusions based on the given results Suggest ways to improve the experimental design Define and recognize examples of the experimental group, experimental variable, control group, control variable, independent variable, and dependent variable, and dataWhen there is a lot of evidence to support and not sound evidence to disprove an explanation for a phenomenon in science, the idea is elevated to A. explanation B. experimentation C. theoryThe 'control group' is an essential component of an experiment. This is because 1. A control group allows one to determine if a particular result is due to the experimental variable. 2. No, it's not essential in experimentation. A control group is not always necessary it depends on the experiment. 3. A control group allows for multiple variables to be tested at the same time. 4. A control group is required for the development of a prediction.
- Which of the following is an ethical consideration when using animals in research? a. Avoiding exposing them to unnecessary pain. b. Animals cannot be killed during the course of an experiment. c. Animals must not experience any pain during an experiment. d. There are no ethical considerations when using animals in research.Why is it important to always use a large sample size in an experiment? A. To make sure that spontaneous generation is taking place B. To make sure that there are not two variables being tested C. Make sure the data is qualitative D. To compensate for errors and get more accurate dataSome of the characteristics of a scientific observation are that it: I.is directed at proving or disproving a hypothesis II. must involve the use of instruments III. may be obtained via a hunch or dream IV. must be reproducible a.IV only b.II and IV c.I, II and IV d.I, II, III, IV