Variables and Graphing

According to the graph, which type of music sales has consistently declined from 2011-2018?

• Streams

• CDs

• Downloads

• Radio

Approximately how long did it take the plant to grow 2.0 cm?

• 4 days

• 4.5 days

• 3.5 days

• 5 days

How much growth occurred by the 3rd day?

• 0.5 cm

• 1.0 days

• 1.0 cm

• 2.5 cm

In an experiment, the component that is controlled by the experimenter is the

• Control

• Independent variable

• Constant

• Dependent variable

Tags

NGSS.MS-PS2-2

How does the control set-up in an experiment differ from the other set-ups in the same experiment?

• It tests a completely different problem

• It has more variables

• It has different constants

• It differs ONLY in the one variable being tested

Why do we want to test only one independent variable at a time?

• Because it is hard to setup a data table with more than one variable
• To better identify what is causing the changes
• It is what has always been done
• It's easier to perform the experiment

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

This part of the experiment serves as a basis of comparison; the one variable being tested isn't part of this group.

• experimental group

• control group

• data

• variables

Tags

NGSS.MS-PS2-5

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Diameter of the ball
• Force acting on the ball
• Height that the ball bounces
• Height from which the ball is dropped

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Mrs. J. sets up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the independent variable.

• distance traveled by the ball

• height of the ramp

• mass of the ball

• weight of the ball

In a controlled experiment, how many independent variables can be worked with at a time? 

• one
• none
• two or more
• how ever many makes sense.

Tags

NGSS.MS-PS2-2