Variables
Vocabulary
Graphs
Results
Random
100
The variable that remains constant throughout the entire experiment.
Controlled Variable
100
a specific, testable prediction
Educated guess
Hypothesis
100
type of graph shows changes/distributions over time?
Line Graph
100
C. E. R. Stands for what?
Claim, Evidence, Reasoning
100
Hypothesis: Duct tape will hold my poster on the wall for the longest amount of time
Create the null hypothesis
Null: The type of tape does not affect how long the poster stays on the wall
or
Duct tape has no affect on length of time poster stays on wall.
200
Variable that is measured in an experiment
Dependent Variable
200
a remark, statement, or comment based on something one has seen, heard, or noticed
Observation
200
Name three things that must be present in a well-created graph
Title, X-axis title, Y-axis title, units, etc..
200
in CER, the "reasoning" step should include what two things?
restate the claim, and provide examples from the evidence that back up the claim
200
Sammy has 10 cats and wonders if the color of their food bowl determines how much food the cats eat. They normally eat out of a black bowl. He feeds 5 cats with a black bowl and the other five with a red bowl. All cats ate all the food in their bowls.
What is Sammy's research question?
Research Question: Does the color of bowl affect how much cat food is consumed?
300
I try out a new type of mac and cheese called "YUMMY-MAC". I wonder if Yummy Mac is cheesier than my original type, Kraft. I decide to make both and have my younger brother try each and make observations.
What is the Control Group?
The original mac and cheese, Kraft.
300
The standard to which comparisons are made in an experiment
Control Group
300
What is the dependent variable shown in this graph?
The Temperature (in degrees C)
300
What is the general term for things that could have affected the experiment or created false results?
Sources of Error
300
Sammy has 10 cats and wonders if the color of their food bowl determines how much food the cats eat. They normally eat out of a black bowl. He feeds 5 cats with a black bowl and the other five with a red bowl. All cats ate all the food in their bowls
Explain the results of this experiment following the CER format
C: Color of bowl does not affect how much food cats eat
E: The 5 cats with red bowls finished all of the food in the bowl. The 5 cats with black bowls finished all of the food in their bowls as well.
R: The color of bowl doesn't affect how much food a cat eats, because all cats ate everything in both the red and black bowls.
400
I try out a new type of mac and cheese called "YUMMY-MAC". I wonder if Yummy Mac is cheesier than my original type, Kraft. I decide to make both and have my younger brother try each and make observations.
What is the INDEPENDENT variable?
The TYPE of mac and cheese
400
a chart that plots data using rectangular bars or columns that represent the total amount of observations in the data for that category
Bar Graph
400
What is the independent variable shown by this graph?
The Months
400
Who was the top money-making artist in 2009 and how do you know?
Dave mathews band: earned 20 million dollars. (Blue bars)
400
List 3 sources of error that could have occurred during the Reaction Time Lab
examples:
- dropping ruler not at 0 cm every time
-some people sitting, some standing
- distraction or focus
- alternate hands
-read ruler inaccurately
-etc..
500
I try out a new type of mac and cheese called "YUMMY-MAC". I wonder if Yummy Mac is cheesier than my original type, Kraft. I decide to make both and have my younger brother try each and make observations.
What is the Controlled Variable?
The younger brother
500
he variable the experimenter manipulates or changes
The independent Variable
500
What is the best choice in graphs/charts to display percentages?
Pie Chart
500
Tom wants to wash his cars but has heard about a new type of soap called Sparkle that works better than his original brand, Clean-o. He decides to test it out by using Sparkle for his 1st car and Clean-o for his second car. After he finished drying his cars, the 1st car left 3 spots while the 2nd car also left 3 spots.
His hypothesis is that Sparkle will leave the least amount of spots
his null hypothesis is that the type of soap used will have no effect on amount of spots.
What is Tom's conclusion?
Because Sparkle left the same amount of spots than his original brand, Clean-o...Tom will accept the null hypothesis
500
On a graph, which axis (x or y) does the DEPENDENT variable go?
Along the y axis
