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Variables
Graphing
Scientific Method
Vocabulary
100
Whenever conducting an experiment, it is important to have _______________ because they help maintain error-free experiments. (hint, we have talked about 3 or them).
What is a variable?
100
This belongs on the top of every graph you make.
What is a title?
100
The first step in the scientific method is to create a problem statement or ask a _______________.
What is a question?
100
Any information you collect by using your senses.
What is an observation.
200
1. The variable the scientist changes or manipulates. 2. The variable that you observe or measure because a change has occurred.
1. Independent 2. Dependent
200
What is the name of the variable found on the x- axis? What about the y-axis?
What is the independent variable? What is the dependent variable?
200
What type of statement should a hypothesis be written in?
What is an if, then statement?
200
An educated guess or prediction for what might happen in an experiment based on one's observations.
What is a hypothesis?
300
What is the difference between a control variable and a control group?
Control variable = variable that doesn't change Control group = group that receives no special treatment to be able to see if independent variable was effective.
300
True or False: You don't need to label the bottom and side of a graph. Explain your answer.
What is False? The variables should always be labeled on graphs.
300
The step of the scientific method where you make graphs, look for patterns, and think about what happened.
What is analyzing data?
300
Term for numbers, observations, or information you collect during an experiment.
What is data?
400
Smithers believes that his workers at the factory could be more productive. He thinks that a special juice will increase the productivity of workers. He selects two groups of 50 workers each and assigns each group the same task (in this case, they’re supposed to staple a set of papers). Group A is given a special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of paper each group has made.Group A made 6,587 stacks, Group B made 1,113 stacks. What group is the control group? Why?
Group B because they received no special treatment
400
Based on the graph... What is the independent variable? The dependent variable?
1. Type of Seed. 2. Number of birds that fly near.
400
Create a hypothesis statement based on the following scenario: Sharon wants to see if temperature of water, affects how fast an egg will boil.
If the temperature of the water increases, then the egg will boil faster.
400
A detailed list of things to do to perform the experiment.
What is a procedure?
500
Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the green slime. Homer decides to check this this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green slime on either side of the shower. 1. What was the initial observation? 2. What is the control group? 3. What is the independent variable? 4. What is the dependent variable?
1. Initial observation = Homer sees there is strange green slime in his shower. 2. Control group = half of the shower with water. 3. Independent Variable = coconut juice. 4. Dependent Variable = Amount of slime left in shower.
500
By looking at the following picture, sketch a graph of what data from this experiment will look like. Be sure to follow TAILS!
Check answers.
500
Briefly describe ALL steps in the scientific method in the correct order.
1. State a problem/Ask a question 2. Observations/Research 3. Form a Hypothesis (based on observations/research) 4. Experiment 5. Record and Analyze Data 6. Conclusion 7. Communicate Results with others (optional)
500
Briefly describe TAILS.... Give a brief description of what it is, and why we use it.
T (title) A (axis labeled) I (proper intervals/spacing) L (variables are labeled) S (scale is accurate)