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Ninth Grade (Grade 9) Scientific Methods and Applications Questions

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Grade 9 Scientific Method
Why would you repeat an experiment over and over again?
  1. because scientists are supposed to do experiments
  2. to test your results and conclude that you will get the same results every time
  3. to test a new variable
  4. because it is recommended but not necessary
Grade 9 Lab Practices and Tools
What are the rules for working with chemicals in the class? (Select all that apply.)
  1. Dispose of all extra chemicals down the sink at the end of class.
  2. Know the safety precautions and hazards for all chemicals you are using before you start your lab.
  3. If you come in contact with a chemical substance, jump up and down and shake to get it off you.
  4. Wash the affected area immediately and thoroughly with water.
  5. If you get any chemicals in your eyes, rub them to make them tear.
  6. Do not touch your eyes, but wash them immediately and tell the teacher.
Grade 9 Scientific Method
The only difference between the control group and the experimental group should be the
  1. control variable.
  2. dependent variable.
  3. hypothesis.
  4. independent variable.
Grade 9 Scientific Method
An experiment always has an independent variable but never has a dependent variable. Choose the answer that corrects this statement.
  1. Experiments do not need variables unless you are making measurements and trying to support your hypothesis.
  2. The dependent variable is actually the only variable needed to complete an experiment.
  3. Both variables are necessary but are unrelated to each other.
  4. Experiments must have an independent variable that, when altered, changes the outcome of the dependent variable being recorded.
Grade 9 Scientific Method
A set of steps followed to test a hypothesis and collect data is a(n)
  1. experiment.
  2. law.
  3. theory.
  4. mistake.
  5. species.
  6. quantitative report.
Grade 9 Scientific Method
Which statement describes what a scientist should not do when using the scientific method?
  1. randomize any variable that is impossible to control, like seed genetics
  2. use statistically large samples in experiments to ensure that uncontrollable variables do not skew the results
  3. test one variable at a time to ascertain its effect on the outcome of the test group
Grade 9 Scientific Method
In an experiment, the control group is
  1. introduced to variables.
  2. the group that controls the experiment.
  3. the group that stays the same.
  4. the group that is tested last.
Grade 9 Scientific Method
Science constantly creates improved models through the use of
  1. reason.
  2. clay.
  3. surveys.
  4. the scientific method.
Grade 9 Scientific Method
The part of the experiment that is changed is the
  1. dependent variable.
  2. procedure.
  3. altered variable.
  4. independent variable.
Grade 9 Lab Practices and Tools
Before starting any lab, you should first
  1. locate safety equipment.
  2. smell all the lab materials.
  3. write the lab report conclusion.
  4. get a calculator.
Grade 9 Scientific Method
To reduce the possibility of error, a scientific experiment should not have
  1. more than one variable.
  2. accurate data.
  3. close observations.
  4. conclusive evidence.
Grade 9 Scientific Methods and Applications
A scientist being paid by a drug company to test one of the company's medications is vulnerable to
  1. methodical error.
  2. blackmail.
  3. bias.
  4. flawed experimental design.
Grade 9 Scientific Method
A(n)                 observation will demonstrate facts and measurements.
  1. quantitative
  2. qualitative
  3. opinion
  4. analysis
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