Chapter 1 Lesson 3 Quiz

To test a hypothesis, a scientist purposely changes the dependent variable.

• True
• False

When drawing a conclusion, scientists examine the data to see if it supports or fails to support the hypothesis.

• True
• False

The factor that may change in a controlled experiment is the dependent variable.

• True
• False

A helpful tool for keeping data organized during an experiment is a graph.

• True
• False

A hypothesis can be accepted as true after two repeated trials have been performed.

• True
• False

Posing a question is the first step in the _______________________ process.

• hypothesis
• replication
• scientific inquiry
• scientific explanation
• bias

Accidentally having two or more variables that change in an experiment is one way to introduce ___________________ to the experiment.

• hypothesis
• replication
• scientific explanation
• bias
• scientific inquiry

When scientists communicate results, they always include a description of procedure so that other scientists can perform a ___________________ to evaluate the accuracy of the results.

• hypothesis
• replication
• scientific explanation
• bias
• scientific inquiry

Scientists design controlled experiments to test a ___________________ .

• hypothesis
• replication
• scientific explanation
• bias
• scientific inquiry

A ______________________________________ is a generalization that uses logical reasoning to make sense of observations.

• hypothesis
• replication
• scientific explanation
• bias
• scientific inquiry