NATURE OF SCIENCE BIO 1 REVIEW

What is the first step in the scientific method?

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• Hypothesis

• Conclusion

• Analyze data

A student wants to perform a science experiment about plants. He wants to know if a certain type of soil will make plants grow taller. Each pot will receive a different type of soil, but will get the same type of seed, water amount, and sunlight amount.What is the Independent Variable in this story?

• Amount of sunlight

• How tall the plant will grow

• Amount of water

• Type of material the plant is growing in

Why is it important to have constants in an experiment?

• To make sure the experiment is fair

• Constants are not needed for experiments.

• To measure the dependent variables all at once

• To test many variables at a time

Which of the following is not an example of quantitative data?

• Temperature

• Speed

• Height

• Texture

Why do many experiments include several trials instead of a single trial?

• Repetition of trials increases the accuracy of the results

• Repetition of trials decreases the sample size of the experiment.

• Repetition of trials makes data easier to analyze.

• It is not necessary to repeat trials

How is a hypothesis different from a theory?

• A theory has evidence to back it up and a hypothesis is an educated guess as to what is going to happen.

• They are both the same. They both are guesses as to what happens in the natural world.

• A theory is an opinion about how something works but a hypothesis has scientific evidence to support it.

• A hypothesis is used in science and a theory is used in society.

Pseudoscience is not considered a science because ____.

• pseudoscience includes a hypothesis

• pseudoscience is not supported by evidence

• pseudoscience has no conclusion

• pseudoscience is a continuing cycle

The variable that is changed by the scientist to test a hypothesis is called the _________________________ .

• dependent variable

• independent variable

• control

The part of an experiment that doesn't change is a _____.

• control

• constant

• conclusion

Justin blows his nose, but mucus seems to leak through the tissue.  He decides to test which tissue holds up the best while sneezing.  What is the independent variable?

• sneezing

• Justin

• amount of tissue

• type of tissue