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Complete the Warm-up by YourselfAlways Write in Complete Sentences, Don’t use the Word “IT”

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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?

•Trebuchet Experiment –Today, 4:15 in M-20

•Research

•Grade Sheet #5 –

•Homework

•A-3 Computer Lab tomorrow (Wednesday)

Trebuchet Catapultthe mass of the counterweight

distance a trebuchet can launch a projectilethe

the mass of the counterweight

How does ________________________ affect __ ____________________________________?

The mass of the counterweight2.5 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 greaterthedistance the trebuchet will launch a projectile will be furtherthe counterweight will

create moreforce on the sling arm

Amount of Water

Mass Volume Density

10ml

25ml

47ml

60ml

75ml

82ml

100ml

Mass of the Graduated Cylinder - _______ grams

Supplies

• Graduated Cylinder

• Beaker with 150ml of water

• Calculator

• Dual Pan Balance

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…

Amount of Water

Mass Volume Density

10ml 10 10 1

25ml 25 25 1

47ml

60ml

75ml

82ml

100ml

Mass of the Graduated Cylinder - _______ grams

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 ______________________.

Mass (Grams)

Volu

me (cm

3)

Not all objects can fit into a graduated cylinderSupplies: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

Write at least 8 procedures on how you figured out the

volume of 12 oz. can of soda.

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 cmHeight = 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 cm3 and a mass of 120 grams. What is the density of the ball?

6. Water has a density of 1 g/cm3. 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.