Variables
Data
Hypothesis/Vocab.
Graphs/Vocab.
SURPRISE
100
What is the independent (or manipulated) variable?
the variable that is changed
100
What is quantitative data?
Data that can be measured...an amount or QUANTITIY.
100
What is the proper format for a hypothesis?
If (I.V.) is related to (D.V.) then...(prediction)....because...(prior knowledge/basis).
100

Graph preferred by scientists.

a line graph

100
One thing that will make an experiment more valid.

retesting

200

What is the dependent (responding) variable?

The variable you measure (depends on the IV)

200
What is qualitative data?
Data that describes the characteristic (or QUALITY) of something.
200

How is a theory different from a law?

Laws are universally accepted.

200
When is a bar graph used?
to show a comparison among different categories
200

What is the difference between an inference and evidence?

inference is an educated guess and an observation is fact.

300

What are the controlled variables?

the variables that are held constant between the two test groups.

300
How do you set up a data table?
I.V. in the first column and the D.V. in the second column.
300

What can render an experiment invalid?

No control

Multiple independent variables


300

How is the scale determined for the graph?

the highest value needed/number of spaces available

300

defined as heterotroph

eat different things

400
What are the two test groups in a controlled experiment?
control group and an experimental group
400

How does the data table relate to the graph?

the I.V. is the x-axis and the D.V. is the y-axis or the data table is the information you graph

400

Defined as below temperature.

hypothermia

400

One piece of information that must be present on all graphs?

title 

units

labels for the x and y axis

equal scale for each axis

key 

400

What is the difference between the control group and the controls.

the control group is a test group kept in normal conditions and the controlled variable(s) are the controls that are held constant (the same) between the two test groups.

500

Identify the independent variables in the following scenario: 

Mrs. Zukowski noticed that she does not get dry skin in the winter when she puts olive oil on her hands. She wants to test olive to see if it makes a difference.

Olive oil = I.V.

500

Write a hypothesis for the following information:

Plant

Height in Centimeters 

Red light 

If you grow a plant in red light then, it will increase in height, because plants can best absorb red wavelengths of light.

500

Defined as dermatitis

Inflammation of the skin.

500

defined as photosynthesis

to make with light

500

The 3rd step of the scientific method

perform an experiment/gather data

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