Grade 8 ANNOUNCEMENTS & REMINDERS

Dear Students:

Good day!  How's vacation?  Hope you are enjoying your happy days. Please be reminded of the following:


*  CHEMISTRY:
    -  Everyone is encouraged to submit the add on points requirement most esp. for the students with grade below 65.  For students above 65 may still submit.  You may choose any of the topics below.  Specific topic will be given to the required people to submit.  
Topics:  
1.  Grand Canyon, America
2.  Tanah Lot, Indonesia
3.  Wave Rock of Perth, Australia
4.  Chocolate Hills, Philippines
5.  Uluru, Australia
6.  Niagra Falls, Canada
7. Devils Marble Karlu Karlu, Australia
8.  Jabel Akakus, Libya
What to include?
1.  Location
2.  History (How it is formed?)
3.  Geology (Rock Type & How it is formed?)
4.  Pictures
5.  References (Complete URL)
Format:  Computerized, A4 paper, 1" all sides margin
Submission:  May 25 - 26, 2016 (W - Th)
    -  Please see the powerpoint presentations of Chemical Reaction & Rocks & Rock Cycle.
    -  These are the people required to submit.  See topics below.
        Daniel:  Belinda - 1, Fareza - 2, Gaby A. - 3, Jose - 4, Olive - 5, Kevin - 6, Stephan - 7 & Gab F.         - 8
        Ezekiel:  Bagus - 1, Rio - 2, Stephanie - 3, Steven - 4
        Samuel:  Dennis - 5, Andrea - 6, Defista - 7, Hanny - 8, Randy - 1, Stanley - 2, Olsen - 3
     -  Make Up Quiz:  Brian Jo & Olsen (May 15to 17 only!)  --- OK already!


*  PHYSICS:
    -  Please see powerpoint presentation of Vibration & Waves, Sound, & Light & Optics.
    -  May 19 (Th):  Quiz No 2 - Mirror:  Concepts, Calculations, & Practical Application and Lenses:
       Concepts &  Practical Application
    -  May 17 (T):  Submission of Physics Experiment:  Sound Reflection
    -  May 25 (W):  Add On Quiz - Lenses:  Calculations & Optical Instrument:  Eye
       Add On Quiz:  Read pp. 456 - 464.  Answer in 1 A4 paper.   This will be submitted on May 23
      (T) under Ms. Czhar. (Ms. Popy will announce the date of submission for her students.)
       A.  Self Assessment 10.1, numbers 1-4
       B.  A 4.00 cm tall object is placed a distance of 7.30 cm from a double convex lens having a
            focal length of 14.2 cm.  Determine the image distance and the image size.  Draw image
            formation.  Determine the nature of the image.
    -  No Exercise:
       Ezekiel:  Stephanie - 41 pts., Tania - 8 pts.
       Samuel:  Olsen - 10 pts., Sam - 6 pts. (depth)
    -  Failed To Do Exercise:  SONAR TECHNIQUE (For Ezekiel & Daniel only!)
       *  Write your GUS in 1/2 crosswise paper.  Please submit on May 17 (T).

           1.  A ship emitted the wave to the sea by oscillator and received the reflection of the 

         wave  after 4/5 s.  If the velocity of the sound in the sea water is 1500 m/s, find 

         the depth of the sea.
      2.  The oscillator vibration in a ship is received by hydrophone after 0.5 s if the      
         depth of the  is 280 m, find the velocity of the sound in the sea.
      3.  If the velocity of the sound in the sea water is 1500 m/s, and the depth of the sea is          3000 m, the reflection of the sound in the sea surface will be heard after _____ s?

     -  Reviewer in LENSES:  Exercise, Exercise1 & Exercise 2.
God bless.   Enjoy!  :) :) :)