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Regents Exam. Lab Practical Review. Station 1 Mineral Identification. Identify 2 minerals by name based on identification tests. Station 2 Rock Classification. Using charts, you will classify a rock as igneous, sedimentary or metamorphic in one or more complete sentences. Igneous Random

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regents exam

Regents Exam

Lab Practical Review

station 1 mineral identification
Station 1 Mineral Identification
  • Identify 2 minerals by name based on identification tests
station 2 rock classification
Station 2 Rock Classification
  • Using charts, you will classify a rock as igneous, sedimentary or metamorphic in one or more complete sentences.

Igneous

Random

Intergrown

crystals

Bubbles –

gas pockets

Glassy texture

Sedimentary

Compacted and

Cemented Layers

Visible sediments

Fossils

Metamorphic

Distorted layers

Interconnected

crystals in a

pattern

Foliated

station 3 angular measurement
Station 3 Angular Measurement
  • Using a plastic hemisphere with the approximate path of the sun draw on it, you will locate the position of the sun at a given time.
  • You will measure the distance between the sun’s position and a fixed point on the dome.
slide8

6am – 12pm = ? degrees

Sun moves at 15º per hour

6 hours x 15 degrees/hour=

90degrees

12

noon

2pm

9am

5pm

East

South

6am

West

5pm

6am

9am

12

noon

2pm

North

slide9

9am – 2pm = ? degrees

Sun moves at 15º per hour

5 hours x 15 degrees/hour=

75 degrees

12

noon

2pm

9am

5pm

East

South

6am

West

5pm

6am

9am

12

noon

2pm

North

slide10

9am – 12pm = ? degrees

Sun moves at 15º per hour

3 hours x 15 degrees/hour=

45degrees

12

noon

2pm

9am

5pm

East

South

6am

West

5pm

6am

9am

12

noon

2pm

North

slide11

12

noon

2pm

9am

5pm

East

South

6am

West

5pm

6am

9am

12

noon

2pm

North

station 4 mass density
Station 4 Mass Density
  • Using a scale, you will measure the mass of a mineral.
  • You will be given the density of the sample.
  • Using the mass you measured and the density given to you, you will calculate the volume of the sample.
station 5 settling time
Station 5 Settling Time
  • You will drop beads of three different sizes into a tube filled with a liquid and measure the time that it takes for the bead to settle.
  • Two times for each size will be measured and averaged.
slide16

057

053

092

078

103

185

averaging
Averaging
  • The 2 trials per bead can be measured to the nearest 1/100th of a second but the averages must be to the nearest 1/10th of a second

Example: 1.50 seconds

1.60 seconds

1.6 is the average

station 6 graphing
Station 6 Graphing
  • Using the data collected from station 5 (bead drop) you will graph three data points.
  • Using the line drawn on the graph, you will determine the settling time for a theoretical bead of a given size.
slide19

4

And what about at 2.5?

3

seconds

3.2 seconds

2

And what about at 6?

1

1.6 seconds

1

2

3

4

5

6

centimeters

a note on rounding and labeling
A note on rounding and labeling
  • Read the station directions carefully
  • If it says to label your answer, then do it.
  • If it says to round to the nearest tenth, hundredth, etc., do it.
slide21
Grams = g
  • Centimeters = cm
  • Degrees = º or degrees
  • Seconds = sec
  • Cubic centimeters = cm3
  • Grams per cubic centimeter = g/cm3
slide22

7.58 seconds

Rounded to the nearest tenth:

0:0158

7.6 sec

Rounded to the nearest hundredth:

7.58 sec

slide23

4.00 seconds

Rounded to the nearest tenth:

0:0400

4.0 sec

Rounded to the nearest hundredth:

4.00 sec

Not rounded- totally wrong:

4 sec