Practice with the Scientific Method

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

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

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

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

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 step does every scientific experiment begin with?

• hypothesis
• question/problem
• procedures
• conclusion

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Marcos wants to know: Does the type of gasoline put in a car effect how fast the car can drive? What is the independent variable?

• Type of gasoline
• which car the gas is put into
• how fast the car can drive
• how much gas is put into the car

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Data can be...

• Numbers & Measurements

• Times

• Pictures & Observations

• All of the above

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS2-1

NGSS.MS-PS1-2

What variable must be kept the same to make it a fair test?

• Constant / Controlled variable

• independent variable

• dependent variable

• extraneous variable

Tags

NGSS.MS-PS3-4