Understanding Experimental Investigations

What is referred to as a 'trial' in an experimental investigation?

• The hypothesis being tested

• The conclusion drawn from the experiment

• Each instance the experiment is conducted

• The process of analyzing data

What is the term for the variable that the scientist changes in an experiment?

• Dependent variable

• Control variable

• Constant variable

• Independent variable

What is the primary purpose of an experimental investigation?

• To compare different scientific theories

• To demonstrate various scientific principles

• To prove a hypothesis correct

• To establish a cause and effect relationship

What does the dependent variable in an experiment represent?

• The variable that is kept the same

• The variable that the scientist changes

• The hypothesis being tested

• The outcome that is measured

Why are constants important in an experimental investigation?

• They represent the independent variable

• They ensure the experiment can be repeated

• They are what is being tested

• They make the experiment more complex

What does a ruler measure in an experimental investigation?

• Distance

• Temperature

• Weight

• Volume

How can you determine the question an experiment was designed to answer?

• By looking at the constants

• By analyzing the conclusion

• By identifying the independent and dependent variables

• By repeating the experiment

What is a common mistake that can invalidate an experiment's results?

• Keeping all variables constant

• Changing more than one variable

• Measuring the dependent variable

• Using a control group

How can an experiment be improved if more than one variable was changed?

• By increasing the number of trials

• By only changing one variable at a time

• By keeping all variables constant

• By changing the dependent variable

What does it mean if an experiment has good conductors?

• It uses electricity efficiently

• It allows electricity to flow through the circuit

• It prevents electricity from flowing

• It measures the flow of electricity