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Lecture 1.1 & 1.3- What is Chem?
- 1. Section 1.1 & 1.3 Lecture What is Chem? & THE SCIENTIFIC METHOD
- 17. If it is the sun that is damaging the leaves on my fern, then moving it to a spot with less sun should stop more fronds from dying. The Scientific Method
- 18. If it is the sun that is damaging the leaves on my fern, then moving it to a spot with less sun should stop more fronds from dying. HYPOTHESIS! The Scientific Method
- 19. If it is the sun that is damaging the leaves on my fern, then moving it to a spot with less sun should stop more fronds from dying. HYPOTHESIS! EXPERIMENT! The Scientific Method
- 20. Hypothesis- Bubble size depends on gum flavor The Scientific Method
- 21. Hypothesis- Bubble size depends on gum flavor Experiment- measure bubble size using different gum flavors The Scientific Method
- 22. Hypothesis- Bubble size depends on gum flavor Experiment- measure bubble size using different gum flavors Manipulated variable- gum flavor The Scientific Method
- 23. Hypothesis- Bubble size depends on gum flavor Experiment- measure bubble size using different gum flavors Manipulated variable- gum flavor Responding variable- bubble size The Scientific Method
- 24. A controlled variable is something that could affect the outcome of your experiment, so because it is not of interest it must be removed or kept constant for every trial. Controlled variables- Brand, quantity, … The Scientific Method
- 25. Failure to identify and control competing factors can make an experiment invalid . The Scientific Method
- 26. The best experiments have just one manipulated variable and all other variables are controlled. The Scientific Method
- 27. The best experiments have just one manipulated variable and all other variables are controlled. This makes it certain that changes in responding variables are a result of that one experimental manipulation because it was the only thing different. The Scientific Method
- 34. Steps in the Scientific Method 1.3 The Scientific Method
- 35. Hypothesis - an explanation Experiment - tests hypothesis Theory - an explanation that is supported by so many different experiments that we agree it is TRUTH. Scientific Law - what happens The Scientific Method
- 36. Hypothesis - an explanation Experiment - tests hypothesis Theory - an explanation that is supported by so many different experiments that we agree it is TRUTH. Scientific Law - what happens LAW- Ships disappear on the horizon Old hypothesis- the ship falls off the world because it is flat Current theory- the ship moves out of view because the world is a sphere. The Scientific Method
Editor's Notes
- Chemical changes that occur in leaves can cause brilliant displays of color.
- Chemical changes that occur in leaves can cause brilliant displays of color.
- Chemical changes that occur in leaves can cause brilliant displays of color.
- Observation is an essential step in the scientific method.
- Observation is an essential step in the scientific method.
- The steps in the scientific method do not have to occur in the order shown. Comparing and Contrasting How are a hypothesis and a theory similar? How are they different?