2. Science 7: 10/1/13 Ellen Show: Hawaii Chair ChromeBooks: Review Games Class Jeopardy Homework: As Seen on TV lab due Thursday! *Study Unit Review for Test Tomorrow!*

3. ChromeBooks: Remember Username is 8-characters @shenschools.org Inky the Squid: goo.gl/W9z0d4 Walk the Plank: goo.gl/1Kz1dU

4. Scientific Method!

5. 100 200 400 300 400 DefinitionsObs. / Inf. Control Exp. Random 300 200 400 200 100 500 100

6. Row 1, Col 1 What is a problem? Something that needs to be solved. Written in a TESTABLE QUESTION format!

7. 1,2 What is an observation? Information gathered with five senses

8. 1,3 Write a possible hypothesis to answer the following problem question: What effect does sunlight have on plant growth?

9. 1,4 What is the scientific method? Steps used by scientists to carry out an experiment

10. 2,1 What is a hypothesis? An educated guess, written: IF (you do this) THEN (this will happen statement)

11. 2,2 What is an inference? Statement to explain observation

12. 2,3 Kylie designed an experiment to see if crest white strips really whiten teeth. Set-up: 50 people used crest white strips for a month and 50 people did not use crest white strips for a month. At the end of her study she measured how white their teeth were. What is the independent variable? Crest White Strips vs. No Crest White Strips

13. 2,4 What three things do all good experiments have in common? Only test 1 variable, many trials, many test subjects

14. 3,1 What is the difference between the data section and the conclusion section of the scientific method? Data section organizes data in tables and charts. The conclusion section EXPLAINS the data!

15. 3,2 Daily Double

16. 3,3 Kylie designed an experiment to see if crest white strips really whiten teeth. Set-up: 50 people used crest white strips for a month and 50 people did not use crest white strips for a month. At the end of her study she measured how white their teeth were. What is the dependent variable? Measurement of how white test subjects teeth are

17. 3,4 Why is it important to test only one independent variable at a time? So you know which variable had an effect!

18. 4,1 Control Group: “normal group” Experimental Group: “Guinea Pigs” What is the difference between the control and experimental groups?

19. 5,2 Daily Double

20. 4,3 Kylie designed an experiment to see if crest white strips really whiten teeth. Set-up: 50 people used crest white strips for a month and 50 people did not use crest white strips for a month. At the end of her study she measured how white their teeth were. What is the control and experimental groups? Control: People w/o crest white strips Experimental: People with crest white strips

21. 4,4 What do I mean when I say all good experiments have a large sample size? What do I mean when I say all good experiments have many trials? Large Sample Size = Many Test Subjects Many Trials = Repeat over and over again

22. 5,1 Independent variable: I change ____ vs. ____ Dependent variable: Data Measured Constants: Variables kept the same between control & experimental groups! Define the following: Independent Variable Dependent Variable Constants

23. 4,2

24. 5,3 Kylie designed an experiment to see if crest white strips really whiten teeth. Set-up: 50 people used crest white strips for a month and 50 people did not use crest white strips for a month. At the end of her study she measured how white their teeth were. What are the constants? Same toothpaste, Same overall teeth condition, Same frequency of brushing

25. 5,4 List the 6 steps of the scientific method in order and explain each step. Problem, Research, Hypothesis, Experiment, Results, Conclusion