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1.3.A Variables Explained
Presentation
•
Science
•
7th - 9th Grade
•
Medium
Standards-aligned
Braden Sparks
Used 2+ times
FREE Resource
5 Slides • 8 Questions
1
By Braden Sparks
2
This is the variable that is manipulated or changed by the experimenters.
Independent Variable (IV)
3
Multiple Choice
What is the Independent Variable?
Variable that is changed by the experimenters
Variable that changes based on the IV
Variable that is measured by the scientist
Things that never change
4
This is the variable that is being measured.
The experimenters do NOT change this themselves. The dependent variable only changes in response to the IV.
Dependent Variable (DV)
5
Multiple Choice
What is the difference between the IV and DV?
DV is changed based on experimenters and IV is what the experimenters measure
IV is changed based on experimenters and DV is what the experimenters measure
They both are things that don't change throughout the experiment
IV changes in response to the DV
6
Controls (Controlled Variables)
EVERYTHING else in the experiment MUST stay exactly the same.
Example: If you want to test how long it takes a car to stop on a track. IV = The car you choose.
DV = how long it takes to stop.
Controls = weather, road conditions, type of brakes
7
8
Multiple Choice
What is the example he uses to demonstrate IV, DV, and Contols?
A runner who changes their training techniques.
How fast a car goes down the track.
A runner who changes out their shoes.
Shoes, clothes, and track.
9
Multiple Choice
What would a good Controlled Variable be for that experiment?
how fast he runs
what shoes he wears
the distance he runs
10
Multiple Choice
Which would NOT be an important controlled variable for that experiment?
The weather
The distance he runs
The surface he runs on
How fast he runs
11
Multiple Choice
Identify the IV in this scenario: Experimenters changed how far away from the beach they were. And they measured the temperature at each distance.
Distance from the beach
temperature
12
Multiple Choice
Identify the DV in this scenario: Experimenters changed how far away from the beach they were. And they measured the temperature at each distance.
Distance from the beach
temperature
13
Multiple Choice
What would an important Controlled Variable be for this experiment?
temperature at each distance
distance from the beach
time of day
there is no way to know
By Braden Sparks
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