Experiment Design
Variables
Graphs
Metric System
100
"Is blue the prettiest color?" Why isn't this a good scientific question?
It is based on opinion
100
What is a dependent variable?
The thing you measure in the experiment; effect of the independent variable.
100
What are three components that a graph should always have?
Graph title, x axis label, y axis label, axis scale
100
What number is the metric system based on?
Ten
200
Two bouncy balls are dropped from the top of a building. One is made of rubber and one is made of plastic. Make a hypothesis about which ball will bounce higher.
The rubber ball will bounce higher than the plastic ball.
200
You’re testing whether eating breakfast improves student test scores. What is the independent variable?
Eating or not eating breakfast
200
What kind of data should be displayed with a line graph?
Change in data over time
200
How many millimeters are in one centimeter?
10
300
“Are vegetables better than candy?” Change this so that it is a good scientific question.
Are vegetables more nutritious than candy?
300
Where does the independent variable go on a graph?
X-axis
300
You are comparing the number of kids who have cars in 9th, 10th, 11th, and 12th grade. What kind of graph should you use?
Bar graph
300
Convert 33 kilometers to decameters.
3,300 Dm
400
Question: Does white bread cause more weight gain than whole wheat bread? Hypothesis: White bread is more popular than whole wheat bread. What is wrong with this hypothesis?
It does not answer the question.
400
Researchers study the effect of sugar on weight. Each subject gets 5 g, 50 g or 500 g of sugar a day. They are all weighed after a month. What are the levels of the independent variable?
5g, 50g, 500 g
400
Look at the graph on the whiteboard. What is the dependent variable?
Number of sicknesses
400
Convert 120 decimeters to hectometers.
0.12 hm
500
Why do experiments need control groups?
To make sure the results came from the independent variable, and not other factors.
500
Come up with a scientific question where the dependent variable would be a person’s height.
Does drinking coffee stunt your growth?
500
Look at the graph on the whiteboard. What question were scientists asking in this experiment?
Does cleaning your room help prevent sickness?
500
Convert 0.3 decimeters to kilometers.
0.00003
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