Science & Engineering Practices, Controlled Experiments, & Variables

Science is....

• the study of technology, history, and literature in the natural world

• the process of learning about the natural world through observation and experimentation

• only mixing chemicals in an institution

• The process of collecting data through the senses or measurement tools

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-2

What is the difference between data and evidence?

• Data is an experiment, while evidence is a theory.

• There is no difference. Data and evidence are the same thing.

• Data is a collection of measurements or observations, while evidence is data that is being used to support or refute a claim.

• Evidence is a collection of information, while evidence becomes data when it is used against a claim.

Tags

NGSS.MS-LS2-4

What is the difference between a law and a theory?

• A law explains "what" happens, while a theory explains "why" something happens.

• A law is based on evidence, while a theory is based on opinion.

• There is no difference- a law and a theory are the same thing.

Tags

NGSS.MS-PS2-4

Why do scientific ideas sometimes change?

• Scientific explanations must be supported by evidence. Explanations can change over time as new evidence is discovered.

• People are responsible for scientific ideas, and sometimes people change their minds and opinions as they get older.

• Scientific ideas will never change- they must always remain the same.

Tags

NGSS.MS-LS2-4

Which of the following is NOT one of the 8 practices of science and engineering:

• Developing Personal Opinions

• Asking Questions

• Developing and Using Models

• Analyzing and Interpreting Data

Tags

NGSS.MS-PS1-2

NGSS.MS-PS2-3

What is being changed/tested in a controlled lab experiment.

• Independent variable

• Dependent variable

• Controlled variable

Tags

NGSS.MS-PS2-2

What is being measured (to determine the success of a test) in a controlled lab experiment.

• Independent variable

• Dependent variable

• Controlled variable

Tags

NGSS.MS-PS2-2

What is being kept the same in a controlled lab experiment.

• Independent variable

• Dependent variable

• Controlled variable(s)

Tags

NGSS.MS-PS2-2

A farmer tests 3 types of soil to see what makes his tomatoes grow the largest. Which of the following would NOT be a controlled variable for this experiment:

• amount of water

• taste of the tomato

• location

Tags

NGSS.MS-ETS1-1

Identify the independent and dependent variable in the experiment: How does the number of mentos added to coke affect the height of the reaction?

• I: Number of mentos D: Height of the reaction

• I: Height of the reaction D: Number of Mentos

• I: Amount of Coke: D: Number of Mentos