Unit 0: Lab Safety, Scientific Method, Creating Tables, Graphing

A controlled experiment allows scientists to isolate and test

• several variables

• a conclusion

• a mass of information

• a single variable

If data from repeated experiments do not support the hypothesis, the scientist's next step should be to

• give up

• alter the experiment and try again

• repeat the experiment

• overturn the theory

If you were testing how well different dish soap cleaned grease, the independent (experimental) variable would be the

• dishes

• water

• dish soap

• type of grease

In order for the conclusion of a scientific experiment to be convincing, the researcher must report adequate evidence supporting or refuting the hypothesis. Scientific evidence should include the

• results from an experiment with just one trial.

• results from only the trials that produced the expected results.

• results from multiple trials of one experiment, including the unexpected.

• results from multiple different experiments.

The______________ variable is the variable you are observing and that changes in response to the ______________variable

• independent; dependent

• dependent; independent

• dependent; control

• independent; control

Which one of the following is NOT an example of quantitative data?

• number of flowers on a plant

• size of the flower

• height of the flower

• color of the flower

Using the graph, estimate ice cream sales when the temperature was 25 degrees C

• ~$30

• ~$40

• ~$60

• Impossible to tell

Using the graph, which of the following would be a good title for this graph?

• Temperature and ice cream sales

• Ice cream tastes better when it’s hot

• The relationship between ice cream sales and temperature

• The effect of ice cream sales on temperature

Flammable materials, like alcohol, should never be used near

• an open door

• another student

• a sink

• an open flame

If a lab fire erupts, immediately

• tell Mr. Worthy

• Run around the room laughing

• open the windows

• throw water on the fire

• get and use the fire extinguisher