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# Hypothesis

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Week 2 Unit 1

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### Hypothesis

1. 1. Predicting and Forming a Hypothesis
2. 2. HYPOTHESIS <ul><li>A guess </li></ul><ul><li>假说 </li></ul><ul><li>hipótesis </li></ul><ul><li>가설 </li></ul><ul><li>Hipoteza </li></ul>
3. 3. Questions 1,2,3,4 #3 #2 #1 Hypothesis (guess) Dependent variable (no control) Independent variable (control) Inference Observation
4. 4. Question 1
5. 5. <ul><li>Observation  inference  hypothesis (guess) </li></ul>O 2 Dead Fish  No oxygen in the water  If oxygen level increases, fish population will increase O 2
6. 6. O 2 O 2 Independent variable? (control) Dependent variable? (no control)
7. 7. Hypothesis IF oxygen level increases THEN fish population will increase. O 2
8. 8. Question 2
9. 9. IF the cola contains sugar, THEN it will sink The regular cola sinks The diet cola floats Variables Observation Independent variable (control): How much SUGAR in the cola Dependent variable: (no control) distance the cola goes up Hypothesis
10. 10. Question 3
11. 11. Plastic bag Pencil Variables Observation Hypothesis
12. 12. Variables Observation Hypothesis Inference There is water in the plastic bag The pencil is sharp The pencil breaks the bag and the water pours out A GUESS If there are MORE holes in the bag, then MORE water will pour out. Independent variable (control): Number of holes in the bag Dependent variable (no control): How much water pours out Plastic bag Pencil
13. 13. 10. Control 9. Width 8. Length 7. Chart 6. Graph 5. Hypothesis 4. Dependent Variable 3. Independent Variable 2. Inference 1. Observation Example Definition (words/pictures)