Transcript Lab Practical Review

Regents Exam
Lab Practical Review
S
Station 1 Mineral and Rock
Identification
S 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 look
off the surface for a metallic luster.
Note-a glassy,
surface reflection
is not the same
as a metallic
look reflection.
Metallic
Non-metallic
Mineral tests cont.
2.Cleavage or fracture- Cleavage will
show a flat surface (sliced bread)
Fracture will show a rough surface
Cleavage
(ripped bread)
Fracture
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
S 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
IgneousIntergrown crystals-look for connected
crystals with no space
Bubbles-air bubbles like a sponge
Glassy texture-very dark w/ concoidal
fracture.
SedimentaryLayers-from sediments being deposited.
Visible sediments-large pieces of broken
rock visible in the rock.
Fossils-impressions or pieces of a
preserved really old organism.
MetamorphicDistorted layers- layers that are twisty and
banded.
Visible flakes-Look for flakes of Mica which
makes it look shiny.
Station 1 Continued
Once 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-Epicenter
Let’s practice how to find Epicenter
distanceP wave arrival- 12:01:30
S 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 until
the marks on
your paper match
the P & S wave
lines
3. Then follow the
line down to the
distance number.
Plotting three epicenter
distances to find the location:
Station 2 cont.
Difference between
P & S wave= 3 min.
P wave arrival9hrs 24 min. 00 sec.
S wave arrival9hrs 27 min 00sec.
Drawing Epicenter direction:
Station 3- Keplers
Distance between foci
Major Axis from both sides
st
1
Law!
Station 3 Continued:
To review the procedure to finding the
eccentricity 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!!
S Read the station directions carefully
S Always note your code numbers, on
your answer sheet!!!!
S If it says to label your answer, then do
it.
S If it says to round to the nearest tenth,
hundredth, etc., do it.
S Write full sentences when noted!
Good Luck!
Pass the Regents and
you too can enjoy
campfires this summer
and not summer
school!!!!