Important Vocab
Variables
Graphs
Miscellaneous
Experimental Vs. Control
100
The act of using one or more of your senses to gather information.
Observation
100
When determining which side of a penny holds more water, what is the independent variable?
Side of Penny
100
A graph used for analyzing proportions and percentages.
Pie Chart
100
A testable prediction about how an experiment will turn out.
Hypothesis
100
The group that is TESTED in a controlled experiment.
Experimental Group
200
Any factor that can change in an experiment is called
Variable
200
When determining which coin (penny or dime) holds more water, what was the dependent variable?
Number of drops
200
The graph used for looking at categorical data.
Bar Graph
200
The number of variables that should be changed on purpose in a controlled experiment.
One
200
The group that does not get the independent variable in a controlled experiment.
Control Group
300
The factor that is changed on purpose in a controlled experiment.
Independent variable
300
When determining which side of a penny holds more water, list one variable that should remain constant.
Type of Water
Size of dropper
Temperature of water
Coin used
300
The graph you should use when looking at change over time.
Line Graph
300
How many constants can you have in a controlled experiment?
As many as necessary
300
A student wanted to test if aspirin made cut flowers last longer. He placed both roses in similar vases with the same amount of water. One rose received aspirin and the other did not receive it.
Which rose was the control group?
Rose without aspirin.
400
The factor that is measured in an experiment.
Dependent variable.
400
A student wanted to test if aspirin made cut flowers last longer. He placed both roses in similar vases with the same amount of water. One rose received aspirin and the other did not receive it. What is the independent variable?
If aspirin is used.
400
You would place the ___________ variable on the x-axis (horizontal axis).
Independent
400
Write a hypothesis for the following question.
Does aspirin make cut roses last longer?
If aspirin is placed in water with cut roses, then they will last longer because the aspirin has chemicals the roses need.
400
A student wanted to see how temperature affected how much crickets chirp. He used 3 different containers and controlled the temperature. Which is the control group?
Containers:
A = Cold
B = Room Temperature
C = Hot
Container B
500
The factors that should be kept the same in a controlled experiment.
Constants.
500
A student wanted to see how temperature affected how much crickets chirp. He used 3 different containers and controlled the temperature. Which is the dependent variable?
Number of Chirps
500
Match the numbers with the appropriate letters.
A = 1
B = 3
C = 2
D = 4
500
Write a hypothesis for the following question:
Does temperature affect the number of chirps crickets make?
If the temperature is warmer, then crickets will chirp more because they tend to chirp more in the summer than in winter.
500
All experiments have control groups. (TRUE or FALSE)
FALSE