T. Trimpe 2008 http://sciencespot.net/ What's Wrong? Lab Safety Challenge #1 T. Trimpe 2008 http://sciencespot.net/

Composition notebooks Take out your composition notebook Take out your agenda

Image: http://morrisonlabs.com/lab_safety.htm What’s wrong? Identify 6 different safety concerns shown in the picture below. Image: http://morrisonlabs.com/lab_safety.htm

The answers are … Don’t fool around during a lab. Always wear safety goggles when doing an experiment Always point test tubes and other items away from yourself and others when heating. Don’t eat or drink while in the lab. Keep hair and other flammable objects away from flames. Don’t leave a flame unattended. Image: http://morrisonlabs.com/lab_safety.htm

Essential Question: What are the steps scientists often use to solve problems?

How your notes should be organized What is science (Notes go here)

What is the scientific method? What is science? What is the scientific method? Process that uses observation and investigation to gain knowledge about events in nature An organized set of investigation procedures used by scientists

Hypothesis Experiment Educated guess or testable prediction Organized procedure or testing hypothesis

Control Constant Standard for comparison Factor that doesn’t vary in experiment

Independent Variable Dependent Variable Factor whose value depends on the independent variable (y-axis) Factor that is adjusted by the experimenter (x-axis)

Scientific Law Scientific Theory Rule of nature that sums up related observations to describe a pattern in nature EX: Law of Gravity Organized procedure for testing hypothesis EX: Black Hole Theory