OBJ: Given activity sheet SWBAT solve mass, volume, density problems using a ruler and balance with 70% accuracy.

DENSITY ACTIVITY – DAY 5DN: Collect college style lab write-upReview Density Practice Activity

ACT: Complete Density Practice Activity SheetReview Results

HW: Complete Constructed Response #4 Packet (due tomorrow, May 22); Lab Practical May 27, p.1-small gym, p.9-room 118; NYSSAE Exam, June 2; Final Exam June ?.

Due to Lab Performance Testing Dr. Schwartzapfel’s Classes will meet from Friday, May 23 through May 30

Period 1: room 117 (Ms. Rodriguez’s room)Period 4-5: room 204 (Mr. Maxwell’s room)Period 7-8: room 208 (Ms. Drotman’s room)Period 9: room 112 (Ms. Ditrano’s room)

COLLEGE-STYLE LAB REPORTTitle: State a title for the lab.Problem: State the problem (as a question)Materials: State the equipment used.Hypothesis: State an educated guess that answers the

problem.Vocabulary: Define: potential energy (& formula), kinetic

energy (& formula)Procedure: Steps taken to complete labExperimentation: plotting data, graphing; prediction

(extrapolation); graphic relationship [inverse?, direct?, cyclic?, static?] (see worksheet)

Questions: see worksheet (front & back)Conclusion: Is hypothesis true or false? Explain what you found by experimentation (graphing).

Ramp Height vs. Distance Moved Graph

Ramp Height (cm)

Dis

tance

cu

p m

oved (

cm)

161514131211109876543210 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

30

x

x

*x

x

x

xMore

Height, M

ore W

eight

Less Height, L

ess Weight

DENSITY ACTIVITYMass = balance (g); nearest tenth 1.0, 1.5

Volume (cube) = L x W x H; cm3 or mL

Density = mass g

volume cm3M

V D

Length

WidthHeight (thickness)Water = 1 g

cm3

less

greater

Use centimeters (cm) only

DENSITY = 0.4 - .5 g/cm3

½

½

Density Problem on State Test

If an object is cut in half, quarters, thirds,

does the density change? Why? Explain yourself.

Density does not change. Density will stay the same because if object is cut up into pieces . . .

Density represents the internal arrangement of the atoms in the object.

Density does not change because mass and volume change proportionately.

Back of Worksheet1. 722.9 g

2. 200.5 g

3. 45.5. g

4. 153.7 g

5. 514.0 g