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12th grade – APRIL 22, 2016
*all late/makeup work & corrections
must be completed before April 29 for
credit.
Math tests are MONDAYS
Science tests are FRIDAYS
Quizzes are any days 
TESTS may need to be moved if we are not quite ready…
but that is the exception.
You need to check the weebly every night BEFORE
you start your HW!!!!!
PHYSICAL SCIENCE
**TAKE NOTES IN YOUR SCIENCE SPIRAL
CH 26 RQ 1-10
REVIEW QUESTIONS
1. How do P-waves travel through Earth’s interior?
P-waves are longitudinal; they compress and expand rock as
they move through it. P-waves can travel through any type of
material—solid, liquid, or gas. They are the fastest of all
seismic waves and the first to register on a seismograph.
2. How do S-waves travel through Earth’s interior?
S-waves are transverse—they vibrate the particles of their
medium up and down and side-to-side. S-waves can travel
only through solids. They are the second to register on a
seismograph.
3. Can S-waves travel through liquids?
No. S-waves can travel only through solids.
4. Name the two types of surface waves and describe the motion
of each.
Rayleigh waves and Love waves. Rayleigh waves move in an
up-and-down, rolling motion. Love waves move in a side-toside, whip like motion. Both of these surface-waves travel at
lower speeds than P- and S-waves and so are the last to
register on a seismograph.
5. What was Andrija Mohorovicic’s major contribution to Earth
science?
Mohorovicic discovered the crust-mantle boundary.
6. How did seismic waves contribute to the discovery of Earth’s
core?
Both P- and S-waves are strongly refracted at the core-mantle
boundary, causing a wave shadow. The reflection and
refraction of P-waves through the core identified the solid
inner core.
7. What is the evidence that Earth’s inner core is solid?
The reflection and refraction of P-waves through the core
identified the solid inner core.
8. What is the evidence that Earth’s outer core is liquid?
S-waves cannot travel through liquids. The presence of the Swave shadow—no S-waves are found in this zone—indicates
that the outer core is liquid.
9. In what ways are the asthenosphere and the lithosphere different
from each other?
The upper mantle, extending from the crust-mantle boundary
down to a depth of about 700 kilometers, has two zones: The
lower zone is the plastic-like asthenosphere, which flows due
to convection. The upper zone (above the asthenosphere) is
the lithosphere. The lithosphere includes the entire crust and
the uppermost part of the mantle. It is relatively rigid and
brittle and resists deformation. The mobile lithosphere is, in
a sense, floating on top of the asthenosphere.
10. How does continental crust differ from oceanic crust?
They differ in density, composition, and thickness. Oceanic
crust is thin and compact (about 10 km thick) and composed
of dense basaltic rocks. Continental crust is between 20 and
60 kilometers thick and composed of less dense granitic rocks.
11. Why does continental crust stand higher on the mantle than
oceanic crust?
The continental crust stands higher than oceanic crust
because it is less dense.
12. What happens to rock when stress exceeds a rock’s elastic
limit?
Rocks are an elastic material—they can return to their
original form after the imposed stress is removed. However,
when stress exceeds the rock’s elastic limit, the rock
permanently loses its original form. The rock either breaks—
brittle deformation, or it flows—plastic deformation.
13. Are folded rocks primarily the result of compressional or
tensional forces?
Compressional force.
14. Distinguish between anticlines and synclines.
An anticline folds upward like an arch. The rocks in the core
of an anticline are the oldest, and as you move horizontally
away from the axis, the rocks get younger. A syncline folds
downward—it sags. The rocks in the core of a syncline are the
youngest, and as you move horizontally away from the axis,
the rocks get older.
15. What is the difference between reverse faults and normal faults?
Reverse faults are created by compressional forces. The
hanging wall is pushed upward along the fault plane relative
to the footwall. Normal faults are created by tensional forces.
The hanging wall drops downward along the fault plane
relative to the footwall.
16. Which kind of fault forms primarily from tension in Earth’s
crust?
Primarily from compression?
Tension creates normal faults.
Compression creates reverse faults.
17. Where does most of an earthquake’s damage generally occur?
The focus is the point where the rock actually breaks. Directly
above the focus is the epicenter. The epicenter is the point on
Earth’s surface where most of the earthquakes energy does
its damage.
18. Where do most of the world’s earthquakes occur?
Most earthquakes (about 80%) are found in the area of the
Pacific Rim that encircles the Pacific Ocean.
19. What device do scientists use to measure an earthquake?
Ground movement is recorded on a machine called a
seismograph (seismometer). Charles Richter used
seismograph data to develop a magnitude scale to quantify
the amount of energy released by an earthquake. So, the
magnitude scale is used to measure an earthquakes size and
amount of energy released; and the Mercalli intensity scale
measures the earthquakes degree of damage on the local
environment.
20. What is the source of a tsunami’s huge amount of energy?
A massive underwater disturbance, such as an earthquake, a
volcanic eruption, an underwater landslide, or an explosion.
BANDA ACEH EARTHQUAKE & TSUNAMI:
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http://www.conceptualacademy.com/textbook/conceptual-physical-science
I HAVE SOME HW 4 U 
4/19 HW = RATS 
READINESS ASSURANCE TEST
(RAT)
1a, 2d, 3a, 4b, 5c, 6b, 7d, 8b, 9d, 10b
Grade: write corr letter then tonite go
and write the corr words…
Any rats questions?
9…page 625
2…d…page 617…our little mouse…
More elastic rocks = More speed waves
3…a…page 624 fig 26.9
5…c…page 618 p3 ‘primary waves’
are the fastest…first to reach the
seismograph…
6…b…page 627 last parag…
Page 629 first 3 parag
Friday – review for test on Monday 
9. In what ways are the asthenosphere and the lithosphere different
from each other?
The upper mantle, extending from the crust-mantle boundary
down to a depth of about 700 kilometers, has two zones: The
lower zone is the plastic-like asthenosphere, which flows due
to convection. The upper zone (above the asthenosphere) is
the lithosphere. The lithosphere includes the entire crust and
the uppermost part of the mantle. It is relatively rigid and
brittle and resists deformation. The mobile lithosphere is, in
a sense, floating on top of the asthenosphere.
https://www.youtube.com/watch?v=fArB5Jz2wos#t=691.641
PreCalculus
Glogs due Monday…ELSE = 0…BEGINNING MARCH 14, 2016.
HW WAS: WS FRAC & DEC
 Turn this in now to me…
Remember – FOR ALL CLASSES –
to note every 30 minutes!!!
option 1 = do 30 min on each class hw - start with math then you must move on to another class…then come back if
you need to…
option 2 = there is no option 2.
YOU NEED TO SET A TIMER FOR 30 MIN.
Precalc = 4/19 = cw = hw = ws “EVALUATING
FUNCTIONS” not a boring ws  and yet your
must do it!!
You must SAW for each problem in your
spiral…no work = no credit.
No help at all except textbook & calculator.
Precalc = 4/20 = hw = order of operations
worksheet = = saw
No help at all except textbook & calculator.
Precalc = 4/21 = hw = fractions & decimals
worksheet = = saw
No help at all except textbook & calculator.
======================================
OTHER 12th grade HW IS LISTED BELOW:
LIT = LONE RANGER & TONTO = READ CH & GIVE RESPONSE ON
WEEBLY TONIGHT
US HISTORY = read ch 24c
RELIGION = pray & rice box
ECON = STUDY VOCAB … watch video and take notes
Spanish – SPANISH AUTHOR PROJECT = ½ OF FINAL EXAM
SEE ABOVE FILE FOR MATH AND SCIENCE!!!
Science = test Monday ch 26
Math = ws linear equations do all saw
MATEO SAYS:
DO ALL OF YOUR HW AND DO IT WELL!!!