1. Warm-Up: Thursday, October 9, 2008 The bowling ball and the balloon take up the same amount of space ( have equal volumes ) Do equal volumes of different substances always have the same mass? on

2. Triple Beam Balance Used to Measure Mass

3. Parts of the Triple Beam Balance PAN ZERO/ TARE KNOB MOVEABLE MASSES BASE BEAMS BALANCE POINT

4. A Closer Look at the Beams 10 gram beam 100 gram beam 1 gram beam

5. Converting g to mg 1 g =1,000mg (1 gram = 1,000 milligrams) When changing grams to milligrams, the decimal is moved 3 places to the RIGHT Example: 50. 0 grams=50,000. 0 milligrams

6. Practice reading the mass on the Beams 1.If the middle beam is on 400g, the back beam is on 50g and the front beam is on 7g, what is the total mass in grams? Mg? Kg? 2.If the middle beam is on 200g, the back beam is on 20g and the front beam is on 5.2g, what is the total mass in grams? Mg? Kg? 3. If the middle beam is on 500g, the back beam is on 10g and the front beam is on 1.2g, what is the total mass in grams? Mg? Kg?

7. Power Point presentation made by Ms. Luck.