Scientific Method Test

What answer best describes the purpose of the scientific method?

• To solve problems and create experiments

• To research new information

• To practice safety

• To become a scientist

Tags

NGSS.MS-LS1-5

NGSS.MS-PS1-2

What is a hypothesis?

• An observation

• Something that you know

• An educated guess

• What you keep the same in an experiment

Which is a good example of a hypothesis for the following scientific question? “Does playing violent video games lead to higher blood pressure?”

• Playing violent video games gives people higher blood pressure.

• If you have higher blood pressure, then you play violent video games.

• If you play violent video games you will have higher blood pressure.

• If you play violent video games, then you will have higher blood pressure.

Why is the following hypothesis considered a bad hypothesis? “Plants not given fertilizer will grow taller.”

• It is not written in the “if” and “then” format.

• The prediction is wrong.

• The independent and dependent variables are in the wrong order.

• This is a good hypothesis.

Why is the following hypothesis considered a bad hypothesis? “If your plants grew taller, then they were given fertilizer.”

• It doesn’t have “if” and “then”.

• The prediction is wrong.

• The independent and dependent variables are in the wrong order.

• This is a good hypothesis.

What is an independent variable?

• What is measured in an experiment

• What you change in an experiment

• A prediction about an experiment

• What stays the same in an experiment

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What is a dependent variable?

• What is measured in an experiment

• What you change in an experiment

• A prediction about an experiment

• What stays the same in an experiment

Alexes wants to know if students do better on their homework if they listen to classical music or hip hop music. What is the independent variable in this experiment?

• Students’ grades on homework

• The age of the students

• The volume of the music

• The type of music

Alexes wants to know if students do better on their homework if they listen to classical music or hip hop music. What is the dependent variable in this experiment?

• Students’ grades on homework

• The age of the students

• The volume of the music

• The type of music

What does a good scientific question need to have?

• It needs to have an independent variable.

• It needs to have a dependent variable.

• It needs to be measurable.

• All of the above are needed in a good scientific question.

Tags

NGSS.MS-PS2-2