Show:
Observations and Inferences
And Measurement
Variables
Scientific
Method
Drawing Graphs
Errors
100
Which of these is an inference? A. The dog is brown B. He won the race C. The sand is hot
B. He won the race
100
How many variables should be changed to get a fair test?
Only 1 variable should be changed.
100
What is a Hypothesis?
A proposed statement based on limited evidence as a starting point.
100
How is data stored before a graph
In a data table.
100
What are the two types of errors?
Random and Systematic
200
What is an observation?
Something that you can see that can be used to make conclusions.
200
What is a variable?
Something that changes in an experiment
200
What is something that affects the swing of a pendulum?
the length if the string.
200
The 'x' axis shows the ___________ variable.
Independant
200
What are errors?
Mistakes that occur upon measurement
300
10m = ?mm
10,000mm
300
What is the difference between an independent variable and a dependant variable.
A independent variable is something that you change, a dependent variable is the results gathered by testing.
300
What is the Coriolis Effect?
the rotation of water and air because the earth spins faster at the equator than the poles.
300
What is the line that connects the points in a graph called?
Line of best fit
300
If a ruler is only 99cm long instead of 100cm, what type of error is this?
A systematic error.
400
3.68201 x 10^9 =
3,682,010,000
400
What is a control experiment?
This is an identical experiment to another but without a variable that is being tested
400
What are three things you should address in your conclusion?
1. Aim 2. Results 3. Reliability 4. Predictions 5. Hypothesis
400
What is a very important thing to consider when marking The increments on a graph?
That they go up in even increments.
400
What is the error that involves reading an instrument wrong?
Parallax error.
500
What are the two ways observations can be recorded? And which is more accurate? Why?
Qualitative and Quantitative. Quantitative observations are more accurate because they are gathered through instruments which give measurements.
500
What is independent testing?
Gathering results by yourself
500
State all 8 stages of the Scientific Method.
1. The question 2. A possible answer (hypothesis) 3. The test 4. Record results 5. Think again 6. More testing 7. Your conclusion 8. What's next?
500
What is the difference between a direct relationship and an indirect relationship on a graph?
Direct relationship means when one variable increases the other increases as well, indirect means when one variable increases the other decreases.
500
What is an error that could occur if you were testing the absorbency of paper towels?
One example: Water could be left In the towel when squeezing it. Answers will vary