Scientific Method
Scientific Method cont.
Variables
Vocabulary
Misc.
100
An educated guess, or possible answer to a question is called a ____________.
Hypothesis
100
A ______________ is an educated guess.
Hypothesis
100
The variable that in changed in an experiment purposefully (the variable that YOU change) is the _______________________.
Independent Variable
100
What is a Force?
A push or a pull
100
What conclusion were we able to draw about the length of a pendulum and the number of cycles it completes in 15 seconds?
The longer the string (or pendulum arm), the fewer cycles it is able to complete in 15 seconds.
200
True or False: After an experiment is planned and prepared for, the next step in the scientific method is to ask a testable question.
FALSE
200
Why is considering changes an important step in the scientific method?
Answers will vary
200
The variable that changes as a result of the experiment is the _________________.
Dependent Variable
200
What is motion?
A change in the position of an object.
200
Based on the graph, what can we predict about the height of a plant given 5 cups of water?
It will grow about 2 1/2 in.
300
What is the last step in the scientific method?
Share Results.
300
Name two ways we can collect and ORGANIZE our data to help us draw conclusions.
T-charts and graphs
300
The parts of an experiment that are always kept the same.
Control Variables
300
The natural force that pulls objects toward each other is __________.
Gravity
300
Why is it important to include units when collecting data from an experiment (i.e. "cm", "seconds", "feet", "cups", etc.)?
Answers will vary
400
Julia has just performed an experiment about the affect of giving different amount of water to plants. What should she do next?
Collect and Analyze her Data
400
True or False: The following statement is a testable question...
"Why do some cats have no hair?"
False: This is not something we can reasonably design an experiment for in order to investigate.
400
Dan believes that if he wears his Bears Jersey for while watching the football game, the Bears will win. He plans to wear his jersey for 8 games and a plain white T-shirt for the other 8 games. The Bears won 7 of the games he wore his Jersey for and 5 of the games he wore the plain white t-shirt. What is the dependent variable?
The number of games the Bears win.
400
Describe what it means for a pendulum to complete one full cycle?
The arm and mass must swing all the way forward then back to its highest point on the side it was released from.
400
If the question for an experiment is, "Does the brand of pencil affect how long it takes to sharpen?"
What would be the Independent and Dependent Variables?
I: The Pencil brand
D: How long the pencil takes to sharpen
500
Which step is missing in the scientific method:
Ask a question, form a hypothesis, plan and prepare, experiment, collect/analyze data, consider changes, share results.
Draw a Conclusion
500
True or False: The following statement is a good testable question...
"Does the brand of pencil affect how long it takes to sharpen?"
True: We could design an experiment with a dependent and independent variable to investigate.
500
Which variable goes on the x-axis? Which goes on the y-axis?
x-axis: Independent
y-axis: Dependent
500
Fill in the blank:
The motion of an object can ONLY be changed when a ________ is applied.
Force
500
If the question for an experiment is, "Does the brand of pencil affect how long it takes to sharpen?"
What would be a variable we need to control (i.e. keep the same throughout our experiment)?
The sharpener used.