Scientific Method Practice

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

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

If plants are exposed to sunlight, then they will grow taller.
What part of the scientific method is this an example of?

• Procedure
• Hypothesis
• Question
• Results

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

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

• Because it is hard to setup a data table with more
• To know what is causing the changes. This helps us understand cause and effect.
• It is what has always been done

Anything that can change in an experiment.  There are three types of these in an experiment.

• variables
• constant
• independent
• dependent

Tags

NGSS.MS-PS2-2

Nick wanted to see how high an ice cube would float in different temperatures of water. Identify the DEPENDENT variable
-Amount of water
-Height of Ice cube
-Temperature the ice cube was at its highest height
-Temperature of the water
-Size of the ice cube

• Amount of water 
• Height of Ice cube
• Temperature the ice cube was at its highest height 
• Size of the ice cube

This part of the experiment serves as a basis of comparison; the one variable being tested has been omitted. 

• experimental group
• control group
• data
• variables

What is being changed in this experiment?

• ramp height
• the speed that the ball rolls
• type of ball

Tags

NGSS.MS-PS3-1

What is being measured or the result/effect of this experiment?

• ramp height
• the speed that the ball rolls
• type of ball

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is being kept constant?

• ramp height
• speed of the ball rolling
• type of ball

Tags

NGSS.MS-PS2-2

What is being changed in this experiment?

• temperature of the stove
• how fast the water boils
• amount of water