Basic variables ppt
-
Upload
shaker-middle-school -
Category
Technology
-
view
30.089 -
download
2
description
Transcript of Basic variables ppt
![Page 1: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/1.jpg)
What is a Variable?
![Page 2: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/2.jpg)
DEFINITION
Variable – Any factor that can change in a scientific investigation or experiment
![Page 3: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/3.jpg)
Types of Variables
Independent Variable
(also called the manipulated variable)
The condition that is intentionally changed by the investigator in an experiment
There can be only one independent variable in an experiment
![Page 4: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/4.jpg)
Dependent Variable
(also called the responding variable)
The factors or conditions that will change as a result of the independent variable
The factors that you measure or observe as data
There can be one or more dependent variables in an experiment
Types of Variables
![Page 5: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/5.jpg)
Controlled Variables
The factors or conditions that are kept the same (unchanged) in an experiment.
There are many controlled variables in an experiment
Types of Variables
![Page 6: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/6.jpg)
Identify variables for the following experiments.
You can do it!
Practice
![Page 7: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/7.jpg)
• Does changing the temperature of a ball affect the height the ball will bounce?
Testable Question #1
HotCold
![Page 8: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/8.jpg)
Manipulated Variable
Responding Variable
Identify Variables #1
Cold Hot
• Does changing the temperature of a ball affect the height the ball will bounce?
![Page 9: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/9.jpg)
• Controlled Variables:
* Same ball
* Dropped from the same height
* Dropped onto the same surface
* etc…
Identify Variables #1
![Page 10: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/10.jpg)
• Does changing the color of light affect the growth rate of plants?
Testable Question #2
![Page 11: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/11.jpg)
Manipulated Variable
Responding Variable
Identify Variables #2
• Does changing the color of light affect the growth rate of plants?
![Page 12: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/12.jpg)
• Controlled Variables: * Same type / size of plant * Same wattage of bulb * Same amount of water * Same soil * Light on for the same amount of
time * etc…
Identify Variables #2
![Page 13: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/13.jpg)
• How does the size of a parachute affect the time it takes a
hippo to fall 10 feet?
Testable Question #3
![Page 14: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/14.jpg)
Manipulated Variable
Responding Variable
Identify Variables #3
• How does the size of a parachute affect the time it takes a hippo to fall 10 feet?
![Page 15: Basic variables ppt](https://reader036.fdocuments.net/reader036/viewer/2022082309/54684a18af79599d558b5684/html5/thumbnails/15.jpg)
• Controlled Variables:
* Same hippo
* Dropped from the same height
* Same parachute fabric
* Same length of strings on the parachute
* etc…
Identify Variables #3