Ch. 1.1B: Well Conducted Experiments

The part of of an experiment that acts as a comparison to see what would have happened under "normal" circumstances is called a(n) ...

• experimental group

• independent variable

• control

• constant

True or False:

The independent variable in an experiment is the cause of the results of the experiment.

• True

• False

To draw a conclusion at the end of an experiment, you should ...

• determine if there is evidence to support your hypothesis.

• interpret your results.

• analyze the data you obtained.

• All of the choices are correct.

Tags

NGSS.MS-PS1-2

NGSS.MS-LS2-4

In an experiment to test whether ultrasonic waves blasted at corn plants make them grow faster, what would be the dependent variable?

• The color of the corn plants' leaves

• The strength of the ultrasonic waves

• The number of corn plants

• The speed at which the corn plants grow

Tags

NGSS.MS-LS1-5

In an experiment to test whether ultrasonic waves blasted at corn plants make them grow faster, what would be the independent variable?

• The strength of the ultrasonic waves

• The color of the corn plants' leaves

• The number of corn plants

• The speed at which the corn plants grow

A hypothesis is ...

• A testable prediction.

• A possible answer to an investigative question.

• A tentative solution to a scientific problem.

• All of the choices are correct.

Tags

NGSS.MS-PS1-2

When you make observations, ask a question, form a hypothesis, and test your hypothesis in an experiment you are ...

• doing research.

• following the scientific method.

• drawing conclusions.

• All of the answer choices are correct.

The variables that could have affected the outcome of the experiment if they had not been made the same for both groups are called controlled variables or ...

• theories.

• dependent variables.

• constants.

• independent variables.

Tags

NGSS.MS-PS3-4

The one factor that is different between the experimental group and the control is the ...

• hypothesis.

• independent variable.

• controlled variable.

• dependent variable.

A tool used to break light into separate colors so it can be used to determine what a substance is made of is called a(n) ...

• spectroscope.

• radio telescope.

• particle accelerator.

• light telescope.

Tags

NGSS.MS-PS4-2