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Ninth Grade (Grade 9) Scientific Methods and Applications Questions

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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
When referring to scientific activities, the best definition of the term observation is an act of
  1. stating an opinion about something.
  2. seeing something from a new point of view.
  3. paying attention to a custom or tradition.
  4. gathering information by paying attention to facts or occurrences.
Grade 9 Scientific Method
Scientific studies must have clear and transparent methods so that the studies are
  1. reproducible.
  2. biased.
  3. methodical.
  4. logical.
Grade 9 Scientific Method
A factor that does not change when other variables change is a
  1. dependent variable.
  2. independent variable.
  3. control.
  4. constant.
Grade 9 Lab Practices and Tools
What are the items shown?
Lab Tool - Beakers
  1. beakers
  2. test tubes
  3. reagent bottles
  4. graduated cylinders
Grade 9 Scientific Method
Scientists use data to make                        to communicate the results of an experiment.
  1. charts and experiments
  2. charts and graphs
  3. circles and graphs
  4. squares and graphs
Grade 9 Scientific Method
In a laboratory experiment, the standard group against which the results are compared is the
  1. experimental group.
  2. dependent variable.
  3. control group.
  4. independent variable.
  5. development group.
Grade 9 Lab Practices and Tools
Which procedure should be followed if this symbol is seen in a science lab?
Hazard Sign - Electrical
  1. Your hands should be dry before touching the equipment.
  2. You need to have safety goggles on at all times.
  3. You should be wearing a protective apron before starting.
  4. You must refrain from eating in the laboratory.
Grade 9 Scientific Methods and Applications
A representation of an object or event is a
  1. scientific law.
  2. model.
  3. hypothesis.
  4. variable.
Grade 9 Scientific Method
One variable is tested and all other variables are the same in a(n)
  1. controlled environment.
  2. poorly designed experiment.
  3. environment.
  4. environmental factor.
Grade 9 Scientific Method
To reduce the possibility of error, a scientific experiment should not have                       .
  1. accurate data
  2. close observations
  3. more than one variable
  4. conclusive evidence
Grade 9 Scientific Method
Science can prove anything.
  1. True
  2. False
Grade 9 Lab Practices and Tools
Which task would the laboratory equipment shown be most useful for?
Lab Tool - Stand And Clamp
  1. storing chemicals
  2. crushing solid chemicals into powder
  3. holding glassware over a Bunsen burner
  4. transferring powered chemicals from a bottle
Grade 9 Scientific Method
A                         is what the scientist is comparing the data to and where no changes are made.
  1. independent variable
  2. dependent variable
  3. qualitative observation
  4. control group
Grade 9 Scientific Method
A statement that describes a phenomenon that has been supported by many experiments is a
  1. control.
  2. scientific method.
  3. hypothesis.
  4. law.
Grade 9 Scientific Method
You have noticed that there appears to be more wildflowers growing near a specific section of the local park. The area is near a small pond, it receives sunlight for about half of the day, and there is a small fence that keeps people off the area. What hypothesis could you create using this known information?
  1. If we limit the sunlight exposure to less than half a day, then less flowers would grow because plants need light to grow.
  2. If the soil stays at a constant moisture level, then the plants will grow.
  3. If you change the type of soil, then the leaves will be greener than already observed.
  4. If the plants are still growing by next year, then they are healthy.
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