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Grade 6 Scientific Method & Variables Worksheet with Answers

Grade 6 (US) · Year 7 (UK) · Class 6 (India) · Science

Unit 1: Thinking Like a ScientistThe Scientific Method

Hypotheses, independent, dependent and controlled variables, and fair tests. This free middle school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

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The Scientific Method & Variables

Grade 6 · Science

Score___ / 12

Name

Class

Date

Learning goal: The Scientific Method

Directions: Read each question carefully. Circle the correct choice or write your answer on the line.

Example

What is a hypothesis?

Answer: a testable prediction or explanation

RememberThe scientific method

QuestionHypothesisa testable guessExperimenttest one changeDataobserve & recordConclusionwas I right?
  1. 1

    What is a control group?

  2. 2

    What is the first step of the scientific method?

  3. 3

    Experiment: Does water temperature change how fast sugar dissolves? Name a controlled variable.

  4. 4

    Experiment: Does the amount of sunlight change plant height? What is the dependent variable?

  5. 5

    'The grass is wet.'

    ObservationInference
  6. 6

    'It must have rained last night.'

    ObservationInference
  7. 7

    What should you do if your data does not support your hypothesis?

  8. 8

    Why do scientists repeat an experiment several times?

  9. 9

    Why is a large sample size better?

  10. 10

    Experiment: Does the amount of sunlight change plant height? What is the independent variable?

  11. 11

    Which graph best shows how temperature changes over a day: bar or line?

  12. 12

    A student tests two fertilizers but uses different plants and pots. What is wrong?

★ Challenge corner for fast finishers

If Earth stopped spinning, how long would one day (sunrise to sunrise) be?

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/science/6/sci_method

Answer key (click to show)
  1. 1.a group that does not get the treatment, used for comparison
  2. 2.ask a question (make an observation)
  3. 3.amount of water, amount of sugar or stirring (any one)
  4. 4.plant height
  5. 5.observation
  6. 6.inference
  7. 7.report it honestly and revise the hypothesis
  8. 8.to make sure results are reliable
  9. 9.it reduces the effect of chance and makes results more reliable
  10. 10.the amount of sunlight
  11. 11.line graph
  12. 12.more than one variable changed, so results can't be compared
  13. ★about one year (challenge corner)

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