Test Review - Scientific Basics

What field of work has been most impacted as DNA technology has improved?

• Banking

• forensic analysis

• international trade

• electronics manufacturing

A student conducted an experiment to test whether talking to plants would help them to grow faster. He set up the following two groups:

Plant Group 1: spoken to and hand watered

Plant Group 2: not spoken to and watered with sprinklers

After three weeks, the plants in Group 1 showed much more growth than those in Group 2. Based on the results of this experiment, which is the best conclusion?

• They are valid because the student ran a controlled experiment.

• They are valid because the dependent variable caused a change in the independent variable

• They are not valid because the time frame to grow a plant is too short

• They are not valid because the student did not control all the variables that can affect plant growth.

What would most likely be included in the “Analysis” section of a lab report?

• a discussion of any errors in the experimental data

• a list of the supplies that were used in conducting the experiment

• suggestions for new experiments based on the results

• a description of what the dependent and independent variables were

A scientist wants to use a model to help present the results of his detailed scientific investigation. Why would a model be useful?

• because the model makes the concepts easier to understand

• because the model is easy to put together and to use

• because the model prevents other scientists from asking questions

• because the model requires the audience to pay full attention to it

In an investigation that uses the scientific method, which step immediately follows making a hypothesis?

• summarizing the results

• asking a question

• making observations

• designing an experiment

Any process used to ask and answer testable questions about observations of the natural world” defines which term?

• scientific consensus

• scientific inquiry

• scientific conclusion

• scientific hypothesis

A student is applying the scientific method to a study of the effect of temperature on plant growth. Each day he writes down the temperature and plant height measurements in a table in his laboratory notebook. Which step of the scientific method does this describe?

• communicating results

• designing an experiment

• drawing conclusions

• collecting and recording data

Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?

• conclusion

• experiment

• hypothesis

• prediction

Which statement best describes a scientific question?

• It must be based on a hypothesis.

• It must be supported by data.

• It must be testable.

• It must be original.

Which best describes the act of using senses or tools to gather information?

• creating a hypothesis

• making an observation

• summarizing the results

• recording the measurements