10 /10/14Period 1 1. Attendance 2. Check and go over Density practice from yesterday. 3. Educational video on lightning. 10 /10/14Period 3 1. Attendance 2. Check worksheet from yesterday and go over. 3. Educational video on lightning!! Using your senses is called: Observation An assumption made on observations is called an Inference Grouping according to common characteristics is called Classification Why do we classify? To make study easier The amount of matter in an object is called mass The amount of space an object occupies is called volume The concentration of matter in an object is called Density Usually solids are ______ dense than liquids. more As temperature of air increases, the density ________. decreases Less dense objects will float If an object and the liquid has the same density the object will remain Suspended No matter the size of the sample, the density of a substance Stays the same