1. 100 200 300 400 500 Scientific Method Steps Science Lab Rules
Observations or Inferences
Qualitative or Quantitative
Hypothesis & Variables
WHMIS and International Safety Symbols
Science Lab Rules

2. What is the University of Washington?
Example
A public institution in the Pacific Northwest with a Husky named “Dubs” as its mascot
What is the University of Washington?

3. What do all scientific experiments begin with?
100
What do all scientific experiments begin with?
A Problem or Question

4. 200
The part of the scientific method where the experimenter makes an “Educated Guess”.
The Hypothesis

5. Conclusion- or Report Results
300
The part of the scientific method that includes sharing the findings and results of the experiment with others.
Conclusion- or Report Results

6. Background knowledge, Make observations, make inferences
400
The 3 steps that occur during the “analyze information” step
Background knowledge, Make observations, make inferences

7. These are the steps of the scientific method.
500
These are the steps of the scientific method.
Problem, Analyze Information, Make a hypothesis, Conduct experiment, collect/analyze data, report results

8. The animal is walking not running.
100
The animal is walking not running.
Inference

9. You see steam rising off a cup of coffee. Observation or Inference?
200
You see steam rising off a cup of coffee. Observation or Inference?
Observation

10. What is the definition of an observation?
300
What is the definition of an observation?
Carefully using your 5 senses to describe what is happening in front of you

11. What is the definition of an inference?
400
What is the definition of an inference?
Using background knowledge and observations to come to a conclusion/opinion

12. The grass is so wet it must’ve rained last night.
500
The grass is so wet it must’ve rained last night.
Inference

13. There are bubbles forming in the test tube.
100
There are bubbles forming in the test tube.
Qualitative

14. 200
Tube B is heated to 20°C.
Quantitative

15. Any observation that uses the 5 senses
300
What are qualitative observations?
Any observation that uses the 5 senses

16. Any observation that uses numbers to describe something
400
What are Quantitative Observations?
Any observation that uses numbers to describe something

17. QuaLitative= L for looks QuaNtitative= N for numbers
500
How can we remember the difference between Qualitative and Quantitative Observations?
QuaLitative= L for looks
QuaNtitative= N for numbers

18. If______then____ because______
100
What is the standard format for writing a Hypothesis?
If______then____ because______

19. What is an independent variable?
200
What is an independent variable?
Any variable that is intentionally manipulated or controlled by the experimenter

20. What is a dependent variable?
300
What is a dependent variable?
Any variable that changes or depends on the manipulation of the independent variable. Not Controlled.

21. What is a controlled variable?
400
What is a controlled variable?
Any variable that an experimenter must keep constant to prevent it from having an effect on the dependent variable.

22. 500 Independent: Type of cream he uses
Homer was told that a certain itching powder was the newest best thing on the market. It even claims to decrease itching by 50 % because it contains caffeine. Interested in this product, he buys the itching powder and compares it to his usual product, which contains aloe vera. On one itching spot, he puts the new powder. On another itching spot, he puts his old cream. He then times how long it takes for the products to stop his itch.
What is the independent variable? The Dependent Variable? Controlled Variables?
Independent: Type of cream he uses
Dependent: How quickly the cream stops the itch
Controlled variables: amount of cream used, size of itch etc

23. What is the following symbol and why is it hazardous?
100
What is the following symbol and why is it hazardous?
Biohazard- anything that may cause disease or illness in humans or animals

24. What is the following symbol and why is it hazardous?
200
What is the following symbol and why is it hazardous?
Compressed gas- container may explode and become projectile if punctured or damaged

25. What is the following symbol and why is it hazardous?
300
What is the following symbol and why is it hazardous?
Dangerously reactive- may have an explosive or dangerous reaction when mixed with other chemicals

26. 400
What is the following symbol, why is it hazardous, and which level of caution is it indicating?
Corrosive, may burn or eat away at skin or metals, danger- highest level of caution

27. 500
What does the following symbol stand for, why is it hazardous and which level of caution is it indicating?
Explosive, may explode if punctured or heated, Warning- lowest level of caution

28. Baggy clothing, open toed shoes, jewelry
100
What are things that should not be worn in the science lab?
Baggy clothing, open toed shoes, jewelry

29. How do you safely test the odor of a chemical?
200
How do you safely test the odor of a chemical?
Wafting technique

30. What should a person do to their hair before conducting an experiment?
300
What should a person do to their hair before conducting an experiment?
Pull it back

31. Report it to the teacher.
400
What should you do if you break a piece of glass or spill a chemical?
Report it to the teacher.

32. When should you begin your experiment?
500
When should you begin your experiment?
After you have read the instructions, listened to directions, and the teacher has told you to do so.

33. FINAL JEOPARDY
What is the scientific method used for?
Process of solving scientific problems. (A way of thinking and gathering knowledge that is both accurate and reliable)