SCIENTIFIC METHOD Day 2

Bellringer Write a hypothesis for each of the following research problems. Identify the dependent and independent variable for each. 1. What effect does high temperature have on onion growth rates? 2. What effect does light have on plant growth 3. What effect do different mouthwashes have on bad breath? 4. What effect does light have on plant growth?

Scientific Method 1. Observation: Notice there is a problem or question to be answered 2. Hypothesis: Scientific Explanation (an If...Then… statement) 3. Experiment: Test your hypothesis 4. Data: Collect information -5. Analyze Data 6. Modify if needed or Communicate Results

Experiment Control: used to compare experimental results. Does not receive any experimental treatment/changes Variable: Factor changed during experiment Independent Variable: What is changed. Will affect the outcome of the experiment Dependent Variable: Results of the experiment

Vocabulary A hypothesis is a tentative explanation of a phenomenon; Independent or manipulated variable – what is changed during the experiment Dependent or responding variable – what is measured Constant or fixed variables –parts in the experiment that are kept constant. Experimental group – group exposed to the independent variable. Control group – used to compare against the experimental group

WE DO: Analyze the Data At the different stations Answer the questions in your notebooks Stay at the table and wait until the timer rings to move to the next station.

My father is an alien https://www.youtube.com/watch?v=sVRAtQ7XjkM

Independent Practice Complete a CER for the alka-seltzer lab we did last week.

EXIT TICKET PUT EVERYTHING AWAY WORK QUIETLY ON THE EXIT TICKET YOU MAY :)