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12th grade – APRIL 14, 2016
*all late/makeup work 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
**Callie the Cow!
TODAY = 4/13 = Ch 25 RQ 1-10 = REVIEW QUESTIONS
1. How did density segregation contribute to Earth’s
internal layers?
As heavy materials moved toward Earth’s center and
lighter materials moved toward the surface, Earth’s
interior became layered according to density.
2. What is the most abundant element for Earth as a
whole?
As a whole, the Earth is 33% iron.
3. What is the most abundant element in Earth’s crust?
What is the second most abundant element?
Oxygen is the most abundant element in Earth’s crust
(46.60 47% by mass). The second most abundant element
in Earth’s crust is silicon (27.72 28% by mass).
4. What is a mineral?
A mineral is a naturally formed, inorganic, crystalline solid
composed of an ordered arrangement of atoms with a
specific chemical composition.
5. What physical properties are used to identify
minerals?
The physical properties used to identify minerals include
crystal form, hardness, cleavage and fracture, color,
density, luster and streak.
6. Most mineral samples do not display their crystal
forms. Why not?
Well-shaped crystals are rare in nature because minerals
typically grow in cramped spaces.
7. Why is color not always the best way to identify a
mineral?
Chemical impurities affect color. Many minerals come in
multiple colors.
8. What is the difference between a silicate mineral and
a nonsilicate mineral?
Silicate minerals contain both silicon and oxygen as part of
their chemical composition. Minerals that do not contain
these two elements are called nonsilicates.
9. What is the most abundant mineral in Earth’s crust?
What is the second most abundant mineral?
Feldspars are the most common and abundant minerals.
Quartz is the second most common mineral.
10. What is the process of crystallization?
Crystallization is the growth of a solid from a liquid or gas
whose atoms come together with a specific chemical
composition and crystalline arrangement. Beginning with
the formation of a single microscopic crystal, the crystal
grows as more and more atoms bond to the crystal faces.
RQ 11-20
11. Name the three major types of rocks and describe
the conditions of their origin.
Igneous, sedimentary, and metamorphic.
Igneous—formed from the cooling and
crystallization of magma. Sedimentary—formed
from weathered material carried by water, wind,
or ice. Metamorphic—formed from preexisting
rocks transformed by high temperature, high
pressure, or both—without melting.
12. What are the most common igneous rocks, and
where do they generally occur?
On the continents, the most common igneous
rocks are granite and andesite. On the ocean floor,
the most common igneous rock is basalt.
13. Where on Earth’s surface are lava flows most
common?
Lava flows are most common on the ocean floor.
14. What are the three major types of volcanoes?
Shield volcanoes, cinder cones, and composite
cones.
15. What are three common types of plutons?
Dikes, sills, and batholiths.
16. How does weathering produce sediment?
Distinguish between weathering and erosion.
Weathering breaks down and decomposes surface
rock. Erosion is the process by which weathered
rock particles are removed and transported away
by water, wind, or ice…GLACIERS…
17. What is a clastic sedimentary rock?
A clastic sedimentary rock is composed of small
fragments of preexisting rocks. Clastic
sedimentary rocks are classified by particle size.
18. When water evaporates from a body of water,
what type of sediment is left behind?
Evaporation leads to the formation of
evaporites—minerals and rocks that are
precipitated when a restricted body of seawater or
the water of a saline lake evaporates. (Examples of
evaporites include gypsum, anhydrite, and halite.)
19. What is metamorphism? What causes it?
Metamorphism occurs when pre-existing rocks
undergo changes due to increased heat and
pressure.
20. Distinguish between foliated and nonfoliated
metamorphic rocks.
Foliated rocks have a layered appearance, as in
parallel flakes, or plates, of mica. Nonfoliated
metamorphic rocks do not have the aligned, platy
mineral configuration.
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http://www.conceptualacademy.com/textbook/conceptual-physical-science
I HAVE SOME HW 4 U 
4/11/16 = 12 items from our class today …
textbook ch 25 (ch 20 videos) … a sentence or
two from the video/book on each one…not from
anywhere else.
4/12/16 = ch 25 rq 1-10 complete answers =
either write the question then the answer – or –
write a complete answer that restates the
question…else 0 credit.
4/13/16 = ch 25 rq 11-20 complete answers ^
Test is Friday = word bank not open notes so
you must study the questions and answers.
4/14/16 = READ CH 25 THEN STUDY THE
RQ QUESTIONS AND ANSWERS –
TEST FRIDAY = WORD BANK…
NOT OPEN NOTES!!!
PreCalculus
Glogs due Monday…ELSE = 0…BEGINNING MARCH 14, 2016.
HW WAS: chapter 6 – do in spiral –
p.464 do # 3-14 … SAW … AW. Start
now…finish tonight 
4/12=NAME+NBQUIZ+P.464+DA
TE ANSWERS ONLY TO 3-14 – GO.
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.
Page 483 # 1-10 … use desmos !!!
CSC, COT, SEC  ON YOUR CALC:
CSC = 1/SIN
COT = 1/TAN
SEC = 1/COS
YOU MUST KNOW HOW TO DO THIS!
SO …
PUT IN “1” THEN “÷” THEN “SIN 31.67” THEN
ENTER…OR…
use the x-1 key …
1=on
2=clear
3=degree mode
p.464
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
7/√65
7/4
√65/4
h ≈ 20.98
3 answers
m<A = 55◦ ; b ≈ 14.6 ; c ≈ 8.4
3 answers
m<A = 45◦ ; m<C = 45◦ ; b = 3√2 ≈ 4.24
so
19 answers so = -5 each
Ok picture from the board:
Homework Precalc = calc = p.465 # 31-42
Hw changed to:
Page 483 # 1-10 … use desmos !!!
I have left in 2 examples from your hw –
you must do the rest and either print and tape
into your spiral or email to me before 8 am
Friday for full credit…
[ 5pi/3 , 3pi]
precalc hw = do/redo last night's hw
you must print out your graphs
or email to me in a word doc before 8 am
Friday.
======================================
OTHER 12th grade HW IS LISTED BELOW:
Not updated Thursday 4/14/16
6 FLAGS FORM = Michael
LIT = LONE RANGER & TONTO = READ CH & GIVE RESPONSE ON
WEEBLY TONIGHT
US HISTORY = read ch 23 &
Travis & Rakayla = review notes cw etc. test 22
RELIGION = pray & rice box
ECON = STUDY ch 3 weebly notes & VOCAB … test coming 4/14 =
tomorrow
Spanish – 2 verbs
SEE ABOVE FILE FOR MATH AND SCIENCE!!!
MATEO SAYS:
DO ALL OF YOUR HW AND DO IT WELL!!!