Scientific Method and Experimental Design Quiz

What is the first step a scientist might take to solve a problem?

• Form a hypothesis

• Draw a conclusion

• Run an experiment

• Gather information

What is a proposed explanation or solution to a scientific problem called?

• Theory

• Conclusion

• Observation

• Hypothesis

According to the data table, at what temperature did the experiment begin?

• 25°C

• 0°C

• 5°C

• 10°C

At what time intervals were the temperature measurements taken?

• Every 5 minutes

• Every 20 minutes

• Every 10 minutes

• Every 15 minutes

What conclusions can you draw from the graphs about the effect of salt on the freezing point of water?

• Salt has a random effect on the freezing point of water

• Salt lowers the freezing point of water

• Salt has no effect on the freezing point of water

• Salt raises the freezing point of water

What was the independent variable in Stephanie and Amy's experiment?

• The time intervals for checking the water

• The temperature of the water

• The type of container used

• The presence of salt in the water

What was the dependent variable in Stephanie and Amy's experiment?

• The type of container used

• The temperature of the water

• The time intervals for checking the water

• The presence of salt in the water

Explain why detailed, step-by-step written procedures are an essential part of any scientific experiment.

• To ensure the experiment is time-consuming

• To allow other scientists to repeat the experiment

• To make the experiment look professional

• To confuse the readers

What is the best way to test the hypothesis: Water will heat up faster when placed under the direct rays of the sun than when placed under indirect, or angled, rays of the sun?

• Design an experiment with a single variable

• Observe the natural world

• Perform a controlled evolutionary experiment

• Conduct an experiment with multiple variables