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Ninth Grade (Grade 9) Scientific Methods and Applications Questions

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Grade 9 Scientific Method
What is the first step in the scientific method?
  1. collect and analyze data
  2. conduct the experiment
  3. state the problem to be investigated
  4. draw a conclusion based upon the observations
Grade 9 Scientific Method
Victoria grows the same bacteria in 20 petri dishes. She places 10 of the dishes in a container with a normal atmosphere. The remaining dishes she places in a container in which the oxygen level is double the normal level. She labels the first group "A" and the second group "B." Which statement best describes the groups?
  1. Group A is the control group; Group B is the experimental group.
  2. Group A is the experimental group; Group B is the control group.
  3. Group A is the hypothesis; Group B is the theory.
  4. Group A is the variable; Group B is the observation.
  5. Group A is the theoretical group; Group B is the hypothetical group.
Grade 9 Scientific Method
Which situation best displays the use of an independent and dependent variable?
  1. Frank sets the temperature of a room to 31 degrees Celsius. He will come back later to record the height of the petunias.
  2. Mike creates three different solutions. He pours one on each of three different plants and will observe which one grows faster.
  3. Emily observes a change in the color of a metal. She records the color in her data section.
  4. Daniel changes his data after realizing it does not align with his hypothesis. He adds extra information to the conclusion that he made up.
Grade 9 Scientific Method
What is the second step of the scientific method?
  1. state the problem
  2. design the experiment
  3. record and analyze the data
  4. state the hypothesis
Grade 9 Scientific Method
An investigator is interested in seeing how tall a certain species of plant will grow if it is kept under red light for a month. What would be valid hypothesis for this experiment?
  1. If the light is red, then the plant will grow.
  2. If the investigator uses pea plants, then there will be a lot of growth.
  3. If plants are grown under different colored lights, then they will grow different heights.
  4. If a month passes, then the plant will grow under the red light.
Grade 9 Scientific Method
In order for a phenomenon to be studied by science, it must be
  1. observable.
  2. measurable.
  3. repeatable.
  4. all of the above
Grade 9 Scientific Method
What is the last step of the scientific method?
  1. conclusion
  2. hypothesis
  3. experiment
  4. data
Grade 9 Lab Practices and Tools
In a microscope, the ocular (eyepiece) is used to
  1. look through.
  2. direct light to the slide.
  3. adjust the focus.
  4. hold the slide.
Grade 9 Scientific Method
The factor in an experiment that is manipulated is the
  1. independent variable.
  2. constant.
  3. hypothesis.
  4. dependent variable.
Grade 9 Scientific Method
The purpose of a conclusion in the scientific method is to
  1. explain the reason for doing the investigation.
  2. state an expected outcome of the investigation.
  3. state whether the data supports the hypothesis.
  4. give sources of information to help the investigation.
Grade 9 Scientific Method
The factor in an experiment that can change if other factors are changed is the
  1. independent variable.
  2. constant.
  3. hypothesis.
  4. dependent variable.
Grade 9 Lab Practices and Tools
When wearing eye protection as instructed by your teacher, when can you take it off?
  1. once the Bunsen burner is turned off.
  2. only when ALL practical work, including clearing away, is finished.
  3. whenever you need to see better
Grade 9 Scientific Method
Grade 9 Scientific Method
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