Lesson Worksheet: Planning an Investigation Biology
In this worksheet, we will practice planning experiments that make observations and test hypotheses using a range of techniques and apparatus.
Q1:
For the following descriptions, state what variable (control, dependent, or independent) is being described.
This is the variable that is changed in an experiment.
- ADependent
- BIndependent
- CControl
This is the variable that is kept the same in an experiment.
- AIndependent
- BControl
- CDependent
This is the variable that is measured in an experiment.
- AIndependent
- BControl
- CDependent
Q2:
Which of the following best defines the independent variable in an investigation?
- AThe independent variable is the variable that is changed.
- BThe independent variable is the variable that is measured.
- CThe independent variable is the variable that is kept constant.
Q3:
Which of the following best defines the dependent variable in an investigation?
- AThe dependent variable is the variable that is kept constant.
- BThe dependent variable is the variable that is measured.
- CThe dependent variable is the variable that is changed.
Q4:
Which of the following best describes the control variables in an investigation?
- AControl variables are the variables that are changed.
- BControl variables are the variables that are kept constant.
- CControl variables are the variables that are measured.
Q5:
Planning a suitable investigation involves making a prediction about what you think may happen, which can then be tested. Which of the following is the scientific term given to this prediction?
- AAssessment
- BEvidence
- CIndependent variable
- DHypothesis
- ETheory
Q6:
Which of the following best defines a hypothesis?
- AA hypothesis is an idea used to explain a phenomenon.
- BA hypothesis is a scientific prediction that is supported by an explanation and can be tested.
- CA hypothesis is an idea that can be definitively proven using a range of facts or evidence.
- DA hypothesis is a set of instructions that should be followed to collect accurate data from an investigation.
Q7:
Which of the following best defines an experiment that is reproducible?
- AA reproducible experiment is one that can be repeated by a different person or with different equipment to give highly similar results.
- BA reproducible experiment is one that can be repeated by the same person with the same equipment to give highly similar results.
Q8:
Which of the following is true about sample sizes used in investigations?
- AThe smaller the sample size, the more accurate the data, as anomalies are more obvious.
- BThe larger the sample size, the more accurate the data, as anomalies are more obvious.
Q9:
Which of the following best defines an experiment that is repeatable?
- AA repeatable experiment is one that can be repeated by a different person or with different equipment to give highly similar results.
- BA repeatable experiment is one that can be repeated by the same person with the same equipment to give highly similar results.
Q10:
A student is investigating how the rate of photosynthesis in pondweed changes with light intensity. The diagram provided shows the setup.
The light intensity is altered by moving the lamp closer to or further from the pondweed. The rate of photosynthesis is measured by the number of bubbles produced in one minute.
In this investigation, which of the following is the dependent variable?
- AThe amount of time the pondweed is left for
- BThe number of bubbles produced
- CThe position of the lamp
- DThe temperature of the water
In this investigation, which of the following is the independent variable?
- AThe light intensity
- BThe temperature of the water
- CThe rate of photosynthesis
- DThe number of bubbles produced
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