Vocab
Experiments
Graph parts and graph reading
Types of graphs
Labs
100
What is a blind experiment?
Experiments in which information about the test is kept from the participants to reduce bias.
100
Which variable in the experiment (see board) is being tested(and thus is the desired variable)?
Type of light the plants recieve (sunlight or florescent)
100
What is a legend?
Gives you information about the graph so you can understand the parts.
(a key to the colors or representations)
100
What type of graph uses percentages?
Pir or circle graphs
100
When did the candle burn the longest? When placed under a small glass or a large glass.
Large glass
200
What is a double-blind experiment?
Experiments in which neigher the experimenters nor the particpants knw the objects' indentitis in the setup.
200
Why would you want to use a double blind experiment?
To make sure the person presenting the experiment doesn't skew the data by changing their facial expression or voice tone or how they present the test.
200
What are the 3 labels that must go on a line and bar graph?
Title, x-axis, and y -axis
200
Which type of graph records individual data as points on a graph?
Line graph
200
Name the experimental variable in the egg, water, salt lab
Amount of salt
300
What is the Control of an experiment?
The variable of part of an experiment to which all others will be compared.
300
Name at least 4 variables that the experimenter tried to reduce or eliminate in the plant sudy.
-type of plant, age of plant, amount of water and amount of light exposure
300
What is the label for the x-axis?
Day
300
What are tally marks?
Lines used to make groups of 5 so it is easier to count
300
Name the control from the candle/jar lab
lighting the candle and watching it first
400
What is an experimental variable?
An aspect of an experiment that changes during the course of the experiment.
400
Why should you always reduce the number of experimental variables?
It's important to only test 1 thing at a time in order to get a good idea of how that change is affecting the desired outcome.
400
When labeling measurments, what is important to include and why?
Units of meausre because you need to know what units are being used incase the experiment is repeated
400
Which type of graph enables you to show the relative size of different categories?
Bar graph
400
Why did the candle burn out when a jar was placed over it?
The burning of the candle used up all the oxygen in the jar. Without oxygen combustion doesn't happen
500
Where is the y-axis?
Vertical line on a graph
500
What is the difference between subjective and objective data?
Subjective is based on the OPINIONS of other people and can vary. SUBJECTIVE data is measurable data.
500
Create a table from this information (see white board).
See teacher table.
500
When would you use a double bar graph?
When comparing the relative sizes of 2 sets of data.
500
In the demonstration with the colored water and candle, why was water sucked up into the glass after it burnt out?
When the oxygen is used up, a void is left in the jar that becomes filled with water