1. Science Process Skills

2. Decode the words in the list
Decode the words in the list. After decoding them, make a statement that will include all the words you have revealed.

4. testable
dependent
hypothesis
variables
independent

5. Writing Hypothesis

6. Hypothesis is
an educated guess.

7. How should we define
hypothesis?

8. A hypothesis is a tentative statement that proposes a possible explanation to some phenomenon or event. A useful hypothesis is a testable statement which may include a prediction.

9. Hypotheses:
How are
They
Written?

10. Plant growth may be affected by the color of the light.
Hypothesis
Plant growth may be affected by the color of the light.

11. Trees will change color when it gets cold.
Hypothesis
Trees will change color when it gets cold.

12. If I play the lottery, then
Hypothesis
If I play the lottery, then
I will get rich.

13. Ultraviolet light causes
Hypothesis
Ultraviolet light causes
skin cancer.

14. Temperature may cause leaves to change color.
Hypothesis
Temperature may cause leaves to change color. or
If leaf color change is related to temperature , then exposing plants to varied temperatures will result in changes in leaf color.

15. Ultra violet light may cause skin cancer.
Hypothesis
Ultra violet light may cause skin cancer. or
If skin cancer is related to ultraviolet light , then people with a high exposure to UV light will have a higher frequency of skin cancer.

16. Hypotheses:
How are
They
Written?
And the
Answers are….

17. Plant growth may be affected by the color of the light.
Hypothesis
Plant growth may be affected by the color of the light.
Hypothesis

18. Trees will change color when it gets cold.
Hypothesis
Trees will change color when it gets cold.
Not hypothesis

19. If I play the lottery, then
Hypothesis
If I play the lottery, then
I will get rich.
Not hypothesis

20. Ultraviolet light causes
Hypothesis
Ultraviolet light causes
skin cancer.
Not hypothesis

21. Temperature may cause leaves to change color.
Hypothesis
Temperature may cause leaves to change color. or
If leaf color change is related to temperature , then exposing plants to varied temperatures will result in changes in leaf color.

22. Ultra violet light may cause skin cancer.
Hypothesis
Ultra violet light may cause skin cancer. or
If skin cancer is related to ultraviolet light , then people with a high exposure to UV light will have a higher frequency of skin cancer.

23. Hypothesis
If skin cancer is related to ultraviolet light, then people with a high exposure to UV light will have a higher frequency of skin cancer.
If leaf color change is related to temperature, then exposing plants to low temperatures will result in changes in leaf color.

24. If Hypothesis skin cancer is related to ultraviolet light, then
people with a high exposure to UV light will have a higher frequency of skin cancer.
Hypothesis
Notice that these statements contain the words, if and then. They are necessary in a formalized hypothesis.

25. If leaf color change is related to temperature, then exposing plants to low temperatures will result in changes in leaf color.
Formalized hypotheses contain two variables. One is "independent" and the other is "dependent." The independent variable is the one you, the "scientist" control and the dependent variable is the one that you observe and/or measure the results.

26. Hypothesis Rewrite the hypotheses using the formalized.
Single underline the dependent variable and double underline the independent.
When you are done, write one more original hypothesis of your own using this form.

27. Hypothesis Salt in soil may affect plant growth.
Plant growth may be affected by the color of the light.
Bacterial growth may be affected by temperature.

28. The ultimate value of a formalized hypothesis is…

29. Hypothesis
…it forces us to think about what results we should look for in an experiment.