BDCA Ways & Safety
The Scientific Method
Accuracy and Precision
Significant Figures
Scientific Notation
100
What is the student displaying when he or she acts professionally?
Respect
100
Name the 5 steps of the scientific method.
Observation, Hypothesis, Experiment, Analysis, and Conclusion.
100
(REFER TO THE PICTURE ON YOUR WORKSHEET) Does this picture represent: a) only accuracy b) only precision c) neither accuracy nor precision d) both accuracy and precision
c) neither accuracy nor precision
100
This number has ________ significant figures: 126
Three significant figures
100
Represent this number as scientific notation: 100
1.0 x 10^2
200
True or False: I can wait until the end of the period to wash my hands after handling hazardous materials.
FALSE: I have to wash my hands RIGHT AWAY!
200
For every investigation, the scientific method is: a) the same set of procedures b) is a logical set of procedures c) must be abandoned if there are unexpected results d) helps predict what results will be obtained
B) is a logical set of procedures
200
True or False: Sally had accurate results when she measured 9.98cm with a ruler on a nail labeled “10cm”. If false, you must correct the statement to make it true.
True (Because Sally was off by 0.02cm which is a within reason for a regular ruler. But, is it accurate if she had an high-tech laser measurement device that can measure upto 0.00001?)
200
This number has ________ significant figures: 0.0045910
Five sig figs
200
Represent this number as scientific notation: 102934.50
1.0293450 x 10^5
300
What does it mean when a student displays reflective behavior?
Student thinks about his or her past behavior(s) and makes meaningful self-evaluation about the behavior(s)
300
True of False: you can discard data inconsistent with the hypothesis. If it’s false, you also must correct this statement to make it true.
False. You can NOT discard any data.
300
) True or False: Precise measurements during the experiment mean there can be no errors during the experiment. If false, correct the statement to make it true.
False: Precise measurements during the experiment mean there STILL can be errors during the experiment because it is not accurate.
300
This problem’s answer should have ________ significant figures: 10.0 + 0.0001 = _____.
THREE sig fig (Rule: In adding/subtracting, answer can have no more than the smallest digit to the right of the decimal)
300
) Turn this scientific into regular notation: 5.5 x 10^2
550
400
According to the rubric if a student acts unprofessional sometimes and are sometimes disrespectful, what grade should they get for Respect from 0-5?
2
400
What is NOT true about hypothesis: a) a testable statement made through observations b) a proposed explanation of observations c) a relationships among the data d) an educated “if” “then” statement
c) a relationships among the data (This is which step?)
400
Which of the choices do NOT represent accuracy? a) Michael Jordan makes the basket 98% of the time he shoots. b) Tiger Woods won the tournament in golf. c) Peyton Manning consistently throws the ball 2 feet left of his wide receiver position. d) The punter makes the field goal.
c) Peyton Manning is not as good as Eli. (No, but he is throwing the ball 2 feet left of his target consistently. He is precise but not accurate.)
400
This problem’s answer should have _________ significant figures: 10.921 x 100. = _____.
THREE sig fig (Rule: In mult/dividing, answer has smallest number of sig fig from the problem)
400
Turn this into scientific notation: 0.00000024582
2.4582 x 10^-7
500
What are two ways to get a “0” for the day?
1) Absent without excuse 2)refuses to do work 3) removed from class due to infractions 4) displays unprofessional language and conduct
500
Tommy wanted to see which manufacturers made the best headphones. Make an hypothesis using an “If…Then” phrase. Remember, hypothesis has to be testable.
Examples: If Tommy surveyed 100 people for the most preferred headphones (Sony v. Beats v. Skull Candy) then, he will have data about which one is most preferred.
500
All groups were measuring the mass of a 6.0g metal block using a scale. Group A measured 6.02g, Group B measured 6.01g, Group C measured 6.52g, and Group D measured 1.01g. Which group(s) had accurate measurement of the mass?
One can argue that Group A and Group B are reasonably accurate given the situation.
500
This problem’s answer should have ________ significant figures: 10.00 + 5.00 x 1.2 = _____.
TWO sig figs (Rules are applied in sequence as the problem is solved using PEMDAS)
500
Make these two numbers to have the same exponent: 6.60 x 10^4 and 78.2 x 10^3
6.60 x 10^4 and 7.82 x 10^4 OR 66.0 x 10^3 and 78.2 x 10^3
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