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Performance Test Review

Performance Test Review. June 2012. General overview of the test. Three stations 9 minutes per station ALL materials supplied by teacher including pencils, ESRT pages, calculators, etc. DO NOT be late for class on the day of your test! The test will be given in ________________________

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Performance Test Review

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  1. Performance Test Review June 2012

  2. General overview of the test • Three stations • 9 minutes per station • ALL materials supplied by teacher including pencils, ESRT pages, calculators, etc. • DO NOT be late for class on the day of your test! • The test will be given in ________________________ • Leave ALL belongings outside the room • You may only come in with a pen or pencil (no other items are allowed)

  3. General advice • Study these notes before the test! • Make sure to read CAREFULLY all directions on the test • Be careful to round numbers according to the directions tenths place  one decimal like 0.2 or 1.6 • Write down your station code numbers as soon as you sit-down at your station • Do not talk during test! • Don’t be nervous, you have seen all this before!

  4. Specific stations on the test • Station #1: Rocks and minerals • Station #2: Ellipses • Station #3: Earthquake epicenter

  5. Station #1: Rocks and minerals (see Mineral PowerPoint for details) • TASKS: (1) Determine the identity of a mineral based on a set of characteristics that you find. You will use a flow chart for this. (2) Determine the identity of a rock based on a set of characteristics that you find. You will use a flow chart for this. • Minerals: Naturally occurring, crystalline solids with well-defined chemical and physical properties

  6. Ways to identify minerals • Hardness (1-10) • Cleavage or fracture • Streak test • Crystal shape • Acid test • Density (specific gravity) • Taste

  7. Cleavage • Results from weaknesses in atomic structure

  8. Fracture • Uneven breakage within minerals

  9. Streak test Streak color Streak plate

  10. Hardness test • Harder or softer than glass • If mineral scratches glass, then object is harder than glass • If does not leave a scratch on the glass, then object is softer than glass

  11. Rocks • Rocks: Composed of two or more minerals (not pure substances) • Three kinds of rocks 1) Igneous: cooling and solidification of magma or lava 2) Sedimentary: compaction and cementation of sediment 3) Metamorphic: changes in heat and pressure

  12. Igneous rocks granite All have interlocking crystals except obsidian which has glassy texture.

  13. Sedimentary rocks Conglomerate Sandstone All are fragmental (clastic) and/or contain fossils. limestone

  14. Metamorphic rocks Gneiss showing banding (type of foliation) Slate showing foliation

  15. Station #2 Ellipses (see Ellipse notes for more details) • TASK: Draw an ellipse and determine the eccentricity • Ellipse: A circle that has been stretched-out (oval) • Formula: e = d/L DEMO • http://vids.myspace.com/index.cfm?fuseaction=vids.individual&videoid=35689164  

  16. Station #3: Earthquake epicenter (see Earthquake notes for more details) • TASK: Determine the position of an earthquake epicenter DEMO • http://vids.myspace.com/index.cfm?fuseaction=vids.individual&videoid=57489815

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