Regents ExamLab Practical Review

Station 1 Mineral and Rock Identification

Identify 1 mineral based on identification tests and using a flow chart.

Remember the Following tests:

1.Luster- is it metallic or non–metallic? look for a reflection or metal lookoff the surface for a metallic luster.

MetallicNon-metallic

Note-a glassy,surface reflectionis not the same as a metalliclook reflection.

Mineral tests cont.

2.Cleavage or fracture- Cleavage will show a flat surface (sliced bread) Fracture will show a rough surface (ripped bread)

Fracture

Cleavage

Mineral tests continued:

3. Streak- Using a small white plate, hold the mineral in one hand and make one “swipe” across the plate….then wipe one finger over the powder….That color on your finger is the streak. Do you see a color or is it colorless? .

Mineral tests….last one!

4. Hardness Test-Moh’s Scale Using a glass plate you will try to scratch the plate using the mineral.Does it scratch the glass plate or not?

Station 1 Rock Classification

By viewing a rock sample you will determine if the rock is igneous, metamorphic or sedimentary.

• Then you must write a FULL sentence explaining why you thought the rock was igneous, metamorphic or sedimentary

Igneous-Intergrown crystals-look for connected crystals with no space

Bubbles-air bubbles like a sponge

Glassy texture-very dark w/ concoidal fracture.

Sedimentary-Layers-from sediments being deposited.

Visible sediments-large pieces of broken rock visible in the rock.

Fossils-impressions or pieces of apreserved really old organism.

Metamorphic-Distorted layers- layers that are twisty and banded.

Visible flakes-Look for flakes of Mica whichmakes it look shiny.

Station 1 ContinuedOnce you determine which rock specimen you have in front of you…write a full sentence. Capital letter to start…period at the end.

This sentence must explain why you think the rock specimen meets that criteria. Use terminology from the ESRT!

Station 2-EpicenterLet’s practice how to find Epicenter distance-P wave arrival- 12:01:30S wave arrival- 12:06:30

Difference between both the P and S wave?

5 minutes-use the chart-

1. Measure the paper on the side at 5 min.

2. Slide up untilthe marks on your paper matchthe P & S wavelines

3. Then follow the line down to the distance number.

Plotting three epicenter distances to find the

location:

Station 2 cont.

P wave arrival-9hrs 24 min. 00 sec.

S wave arrival-9hrs 27 min 00sec.

Difference between P & S wave= 3 min.

Drawing Epicenter direction:

Station 3- Keplers 1st Law!

Major Axis from both sides

Distance between foci

Station 3 Continued:To review the procedure to finding theeccentricity of an ellipse:

1. Place pins in coordinating letters given in your instructions. *remember one of these will count as the foci of the sun!

2. Place the provided string around both pins, and using your pen you will draw the ellipse determined by the distance of the foci.

3. Note where the sun is closest to the planet in orbit….do you remember something about orbital speed?

4. Using the ESRT do the formula with your foci distance and axis length-then find the eccentricity of this object.

5. Using the ESRT notice the planets listed and your calculated eccentricity….

6. Remember…… 0 foci distance will give you a perfect circle-this means one foci.

1.0 eccentricity will give you a straight line (the further apart the foci

the more eccentric the oval will be.

Mercury is a most eccentric orbit and Venus is a least eccentric orbit.

Earth is a slightly eccentric ellipse.

Last minute instructions!! Read the station directions carefully

Always note your code numbers, on your answer sheet!!!!

If it says to label your answer, then do it.

If it says to round to the nearest tenth, hundredth, etc., do it.

Write full sentences when noted!

Good Luck!

Pass the Regents and you too can enjoy campfires this summerand not summer school!!!!