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Scientific Method

Scientific Method. 6 Steps. Step 1- Observation, Get an Idea and Ask a Question. Observe, Get an Idea! and ASK a Question. Observe, Get an Idea! and Ask a Question?. Step 2- Research Topic Formulate Hypothesis. Frogs breath through their skin Frogs are ultra sensitive to uv light

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Scientific Method

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  1. Scientific Method

  2. 6 Steps • Step 1- Observation, Get an Idea and Ask a Question

  3. Observe, Get an Idea! and ASK a Question

  4. Observe, Get an Idea! and Ask a Question?

  5. Step 2- Research TopicFormulate Hypothesis • Frogs breath through their skin • Frogs are ultra sensitive to uv light • Frogs need to stay moist • Frog eggs do not have a hard protective coating • The hole in the ozone layer is causing more UV light to hit earth

  6. WHY? What has gone wrong?

  7. Step 3- Hypothesis • An educated guess • It can be an if…then.. statement • Write down two hypotheses about why the frogs are deformed. • __________________________ • __________________________

  8. Class Hypothesis • Too much UV light causes the frogs to be deformed

  9. UV Light

  10. Step 4 and 5- Experimentation2 steps • Experiments are used by Scientists to test the hypothesis.

  11. Experiment Steps:4. Experimental Design5. Procedure Experimental Vocabulary • Variables- the things that can affect the experiment Ex: type of eggs Amount of UV Temp. of water

  12. Vocabulary Cont.. • Independent variable- the variable that is changed on purpose in an experiment EX: Amount of UV light • Dependent Variable- the variable, that is believed to be caused by the independent variable. • EX: Deformed frogs

  13. Vocabulary Cont… • Control group- this is the group that provides comparison. This group is the group that is not being experimented on. • Experimental group- this is the group that is being experimented on.

  14. Variables • Number of eggs • Amount of UV light • Temperature of environment

  15. The UV Experiment • Experimental Group • 100 eggs • Eggs kept in a lab tank at 30 degrees Celsius • 12 hours of UV light Control Group • 100 Frog eggs • Eggs kept in a lab tank at 30 degrees Celsius • No UV light

  16. Step 4. Experimental Procedure

  17. Experimental Procedure • Materials Needed Aquarium for Frog Eggs UV Light

  18. Step 5- Collect Data • Data is usually in the form of numbers

  19. Data • Control Group- 65 eggs hatched into normal developed frogs • Experimental group- 40 eggs hatched, 27 frogs seemed to look normal, while 13 frogs seemed deformed in some way.

  20. Deformed frogs

  21. Step 6 - Conclusion and Analysis of Data • Usually scientists create a chart or table to show data, this will show trends in the experimentation. • Reject or Accept Hypothesis

  22. Step 5. Data from experiment

  23. Step-6 Conclusion and Analysis of Data • The data supports the hypothesis that UV light does affect frog eggs and the frogs.

  24. SCIENTIFIC METHOD STEPS DO NOT HAVE TO BE DONE IN ORDER!!!!

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