Characteristics of Living Things

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Presentation transcript:

Characteristics of Living Things

Homeostasis

Homeostasis- body temperature

Homeostasis- sugar levels

Scientific Method Steps Problem (Research) Hypothesis Experiment Analysis Conclusion

Problem/Research/Hypothesis Smithers thinks that a special juice will increase the productivity of workers. Hypothesis format: If the workers use the special juice, then their productivity will increase (# of stacks of paper).

Experiment He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice.

Analyze After an hour, Smithers counts how many stacks of papers each group has made. Group A made 1,587 stacks Group B made 2,113 stacks.

Conclusion Group A is given the special juice to drink while they work. Group A made 1,587 stacks Group B is not given the special juice. Group B made 2,113 stacks. Therefore, we can conclude…

Conclusion The special juice does not seem to improve productivity. It actually seems to make it worse!

Controls & Experimenting Control Group: Group B (not given the special juice) Experimental Group: Group A (given the special juice)

Identifying the Variables: Independent Variable: The special juice Dependent Variable: # of stacks of paper made

Line graphs- show change over time (2 sets of # data) Bar graphs- graph amount of something in different categories (1 number, 1 category)

How is a Theory different from a hypothesis?

Descriptive Data Blue 3 cm long Tall 1 door Round 127 people Furry Quantitative Data Blue 3 cm long Tall 1 door Round 127 people Furry 12 degrees C Humid 5000 km Loud 100 mL

Temperature: Celsius Length: Meters Mass: Grams Volume: Liters Metric System Temperature: Celsius Length: Meters Mass: Grams Volume: Liters

Metric Conversions King Henry Died, (m/L/g) Drinking Chocolate Milk.

King Henry Died, (m) Drinking Chocolate Milk. 400 km = ________ m 400 x 10x10x10= Or move decimal 3 to right = 400. = 400,000. m

King Henry Died, (L) Drinking Chocolate Milk. 200 mL = ________ L = 200. = .200 L