Explore and Discover (Purpose &Research) Testing ideas (Hypothesis and Experiment) Testing ideas (Hypothesis and Experiment) Outcome/ Conclusion Communicating results (Analysis) Communicating results (Analysis)

Essential Question: What thinking processes do scientists use to solve problems and create new technology? (pg. 27) They use the Scientific process Does the scientific method need to start with asking a question? No. The scientific method does not always have to be in the same order. For example, in astronomy they usually start their scientific process form making observations, then creating hypothesis, and finally collecting data and asking a question.

Why do I need to learn the scientific process? To be able to find reasonable answers to every day questions. We do this on daily basis; For example: Why do I feel sick after eating a certain food?

Essential Question (pg. 29): What are the part of a good experiment? Independent variable (IV) : variable changed/ manipulated by the experimenter. Dependent variable (DV): Data collected (the results) Title: What is the experiment about/ testable question (the effect of IV on DV or if IV, then DV)

Hypothesis: Educated guess (if IV then DV) Experimental Groups: Tests- One variable at a time Repeated Trials: Scientists repeat at least 3 times to get an accurate re sults. However, we only do it once for the sake of time.

Controls: Particular sample that is treated the same as all the other samples except that it is not exposed to the manipulated variable. (Conditions that are opposite to what you are trying to prove.) Constants: C onditions that stay the same in the experiment

Why do I need to do many trials in an experiment: To ensure accuracy Why isn’t the following not a great hypothesis: “if jelly fish is left in tank and fed food every day, then it will live for ever.” -It is not testable -It is not measureable -It is too vague

Designing an Experiment (pg. 31) Lab Title: ( The effect of active metal on the amount of rust) Hypothesis: Use an if/ when… then… statement. State the cause and effect relationship between the IV and the DV. The hypothesis must be testable. If the iron metal is wrapped with more active metal then less rust will be formed on the metal.

Independent variable: What is the cause agent? What are you changing? Metal used for wrapping: Aluminum (Al), Magnesium (Mg), and lead (Pb).

Experimental Groups NailNail + AlNail + MgNail + Pb # of Trials3333 The number of columns will vary depending on how many testing conditions exist in the experiment. Dependent variable (What is being measured?): Amount of rust

Experimental Constants: ( variables not altered during the experiment) Control Group: What is the experimental group being compared to? Nail by itself Same amount of water Same mass of metals Same type and size of iron nails Same amount of time (5 days) Same person doing the experiment