1. You have 5 minutes. Complete the Warm-up by Yourself Always Write in Complete Sentences, Don’t use the Word “IT” Read Page 47 1.What has more mass, a 1000 grams of sand or 1000 grams of feathers? 2.What has more volume, a 1000 grams of sand or 1000 grams of feathers? 3.What is density? 4.What is the formula for density?

2. Trebuchet Experiment –Today, 4:15 in M-20 Research Grade Sheet #5 – Homework A-3 Computer Lab tomorrow (Wednesday)

4. Trebuchet Catapult the mass of the counterweight distance a trebuchet can launch a projectile the the mass of the counterweight How does ________________________ affect __ ____________________________________?

5. The mass of the counterweight 2.5 lbs = 5.0 lbs = 7.5 lbs = 10 lbs = 12.5 lbs= The distance a trebuchet can launch a projectile 5.5 kilograms 11 kilograms 16.5 kilograms 22 kilograms 27.5 kilograms If _______________________________, then ___ _________________________________________ _____, because _____________________________ _________________. the mass of the counterweight is greaterthe distance the trebuchet will launch a projectile will be further the counterweight will create more force on the sling arm

7. Amount of Water MassVolumeDensity 10ml 25ml 47ml 60ml 75ml 82ml 100ml Mass of the Graduated Cylinder - _______ grams

8. Supplies Graduated Cylinder Beaker with 150ml of water Calculator Dual Pan Balance

9. 1.Obtain all materials. 2.Measure the mass of the graduated cylinder (G.C). 3.Pour 10ml of water in the G.C. 4.Measure the mass of the G.C. and the 10ml of water. 5.Subtract the mass of the G.C. 6.Write the mass of the 10ml of water in the data table. 7.Repeat procedures 3-6 with 25ml of water 8.Continue…

11. Amount of Water MassVolumeDensity 10ml 10 1 25ml 25 1 47ml 60ml 75ml 82ml 100ml Mass of the Graduated Cylinder - _______ grams

12. 1.Which amount of water has the most mass? 2.Which amount of water has the most volume? 3.Which amount of water has the most density? 4.Finish this statement: Even if the volume and mass change the density ______________________.

13. Mass (Grams) Volume (cm 3 )

15. Not all objects can fit into a graduated cylinder Supplies: Towel,Tape and Calculator 2-Liter bottle with top cut off, filled ½ way with water. Large Beaker with 600ml of water Dual Pan Balance with a 200g mass

16. Write at least 8 procedures on how you figured out the volume of 12 oz. can of soda.

18. 1.What is the volume of a book with the following dimensions? Length = 12 cm, Width = 3 cm and Height = 20 cm 2.What is the density of the book if its mass is 175 grams. 3.What is the volume of a steel bar with the following dimensions? Length = 5 cm, Width = 2 cm Height = 30 cm 4.What is the density of a steel bar if its mass is 2.5 kg? (Hint: convert to grams first.) 5.A cork ball has a volume of 5.0 cm 3 and a mass of 120 grams. What is the density of the ball? 6.Water has a density of 1 g/cm 3. If you placed the cork ball and the steel bar in water, what would happen to each? 7.Explain your answer to question #6 using your knowledge of density.