Unit 1 Review

observation pan balance investigation inference spring scale c b D c a c b c b a a Inferring He did not actually see what happened, but made a guess based on his observations. The leaf is about 3.5 centimeters long. The leaf has jagged edges. The leaf has one point. She could use a stopwatch to time how long it takes a heavy ball to roll down a ramp and then how long it takes a light ball to roll down the same ramp.