Unit 1- Lesson 2 Review

An independent variable is a variable that is

• being purposely manipulated.

• unchanged.

• measured or being observed.

A dependent variable is a variable that is

• unchanged.

• purposely manipulated.

• measured or being observed.

Tags

NGSS.MS-PS1-2

The three kinds of variables needed in an experiment are...

• control, dependent, identical

• control, dependent, independent

There is/are _____________ independent variable(s) in every experiment. (use a number)

_______________________ is an organized plan for gathering, organizing, and communicating data.

• data

• graph

• hypothesis

• scientific method

Tags

NGSS.MS-PS2-2

________________ is an educated guess or proposed answer to a question.

• Guess

• Hypothesis

• Law

• Theory

A student wants to find out if grass grows better in the sun or in the shade. When he writes his hypothesis, what will be the independent variable?

• The amount of sunlight the grass receives

• The amount of water given to the plants

• The temperature of the room

• The size of the grass

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Good experiments follow organized procedures and should be repeated many times to prove validity. Which of these phrases describes another characteristic of good scientific experiment?

• variable (different) procedures for obtaining data

• uncontrolled surroundings

• results that can be replicated

• small sample size for collecting data

Tags

NGSS.MS-PS1-2

A student poses the question, "How will batting practice affect a player's batting average?

When writing the hypothesis, what will be the dependent variable?

• amount of time spent at batting practice

• the player's batting average

• Type of bat

• The weather during practice

When looking at the graph of the experiment, what label represents the DEPENDENT VARIABLE?

• time in days (x-axis)

• plant height (y-axis)