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Lab Practical Information. Regents Earth Science. When?. Wednesday 5/31/2011 Everyone. Where?. All classes report to room (here) as normal. Some Simple Rules. Be ON TIME Do not be absent! Pen AND Pencil! READ DIRECTIONS There is to be absolutely NO TALKING

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Lab Practical Information

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Lab practical information

Lab Practical Information

Regents Earth Science

Lab practical information


  • Wednesday 5/31/2011

    • Everyone



  • All classes report to room (here) as normal.

Some simple rules

Some Simple Rules

  • Be ON TIME

  • Do not be absent!

  • Pen AND Pencil!


  • There is to be absolutely NO TALKING

    • If you choose to talk, your exam booklet will be taken from you

    • You will receive a 0 for the Regents grade

    • You will have to re-take the Regents Exam in August & possibly have to go to Summer School 

What is the lab practical

What is the Lab Practical?

  • First part of the Regents Exam

  • Test divided into 3 stations

  • Students are given 9 minutes per station

Station 1 mineral and rock identification

Station 1: Mineral and Rock Identification

  • Using a mineral identification kit, the student will determine the properties of a mineral and will use those properties to identify that mineral from a flowchart. Using rock identification charts from the Earth ScienceReference Tables and the characteristics observed in two rock samples, the student will classify each rock as igneous, sedimentary, or metamorphic.

Mineral properties

Mineral Properties

  • Luster

    • metallic or nonmetallic—glassy, dull, pearly

  • Cleavageor Fracture

    • are the broken sides of the mineral semi-smooth surfaces, or non-smooth broken surfaces?

  • Streak

    • using white streak plate to see color of powdered mineral

  • Hardness

    • using glass scratch plate

Lab practical information





Mineral Name?





Mineral Name?

Metallic luster

Metallic Luster

Rock properties and classification

Rock Properties and Classification

  • Classify 2 different rock samples

    • Sedimentary, Igneous, Metamorphic

  • State a reason for your classification

Igneous rocks

Igneous Rocks





Igneous rocks1

Igneous Rocks:

  • Multiple-mineral composition

  • Crystalline texture

  • Interconnected mineral crystals with NO layering

  • Glassy texture

  • Rounded gas pores or spaces

Sedimentary rocks

Sedimentary Rocks

Layered sediments



Sedimentary rocks1

Sedimentary Rocks:

  • Bedding or layering of sediments

  • Rounded grains, clasts, fragments or sediments

  • Fossils

  • Cemented sediments with visible pores or openings

  • Contain fragments of other rocks

Metamorphic rocks

Metamorphic Rocks





Metamorphic rocks1

Metamorphic Rocks:

  • Multiple-mineral composition

  • Interconnected mineral crystals WITH layering (foliation)

  • Slaty, schistose or gneissic foliation

  • Distorted or wavy rock structure

  • Stretched pebbles

  • A high percent of mica minerals

Station 2 locating an epicenter

Station 2: Locating an Epicenter

  • Using seismic data, the Earthquake P-wave and S-wave Travel Time graph from the Earth Science Reference Tables, a safe drawing compass, and a map, the student will determine the location of an earthquake epicenter

Lab practical information



2:35:30 – 2:33:00 =


Station 3 constructing and analyzing an asteriod s elliptical orbit

Station 3: Constructing and Analyzing an Asteriod’s Elliptical Orbit

  • Using two pins, a looped string, a metric ruler, and a calculator, the student will construct an ellipse, determine its eccentricity, and apply this information to our solar system.



A number indicating the roundness of an ellipse.

Eccentricity = Distance Between Foci

Length of Major Axis

e=d/L Page 1 in your BEST FRIEND

Lab practical information

Please Remember

Measure to the nearest tenth! 0.1

Calculate e to the nearest thousandth! 0.001

Lab practical information

Please Remember

Perfect circle

Straight line

e = 1

e = 0

Please remember

Please Remember

Planets change orbital speed as they revolve around the Sun.

Please remember1

Please Remember

  • As distance from the Sun increases, a planet’s period of revolution increases.

Lab practical information

  • Be sure to Read & Measure ACCURATELY

  • Remember: NO TALKING

  • Be on time!

  • Do not be absent!

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