Sunday, October 23, 2016

October 17th - October 21st

October 17th – 21st
Quick notes: Acids and Bases (add to Acids and Bases section of your ISN)
       Who’s ever had heartburn or a bad stomach ache? Did you take a TUMS or Pepto-Bismol?
       These are both antacids. They contain weak bases that sooth your heartburn by reacting with and neutralizing the acid in your stomach.
       Acids and Bases Neutralize one another because the the H+ of the acid and the OH- of the base form H2O…WATER!
After quick notes review on acids and bases:
Video on Friction: Posing question
       What would the world be like without friction? https://www.youtube.com/watch?v=VUfqjSeeZng
Note=taking on Forces (ADD TO FORCE AND MOTION SECTION OF ISN)
If objects in motion tend to stay in motion, why don’t moving objects keep moving forever?
Things don’t keep moving forever because there’s almost always an unbalanced force acting upon them.
A book sliding across a table slows down and stops because of the force of friction.

If you throw a ball upwards it will eventually slow down and fall because of the force of gravity
Newton’s First Law of Motion:
MASS is the measure of the amount of matter in an object.
It is measured in Kilograms
The law states: Unless acted upon by an unbalanced force, this golf ball would sit on the tee forever.
What is this unbalanced force that acts on an object in motion? FRICTION

      There are four main types of friction:
      Sliding friction: ice skating
      Rolling friction: bowling
      Fluid friction (air or liquid): air or water resistance
      Static friction: initial friction when moving an object
AIR RESISTANCE:
      A type of frictional force that opposes the motion of objects that move through the air.
      Causes objects to fall with different accelerations and different speeds.
      Acts in the direction opposite to the velocity of an object moving in air.
·         Size of the force depends on the size and shape of the object

TERMINAL VELOCITY:
As an object falls, the downward force of gravity causes the object to accelerate. As the speed of the object increases, the upward force of air resistance also increases.
       When the upward air resistance force equals the downward force of gravity, terminal velocity is reached – the velocity becomes constant.
Depends on the size, shape, and mass of the object.
HOMEWORK ASSIGNMENT:
       Read “Types of Friction” https://csoscience.files.wordpress.com/2012/10/3_friction10912.pdf

Video on Acids:
       Before the video, fill out the section for What do you know about acids?
       After the video, discuss the after section
       Complete the activity: Which are acids
Add to ISN (ACIDS AND BASES SECTION)
       Indicators such as litmus paper can identify whether a solution contains an acid or a base.
       The pH scale is used to describe how acidic or basic a solution is. (pH is also the measure of hydrogen concentration)
       pH = 7    is neutral
       pH > 7    is basic
       pH < 7    is acidic
Quick Lab Check:
       Is vinegar an acid or base?
       When you used the blue litmus paper; what color did it turn?
       Which color on the ph scale is vinegar closely corresponding with?
       Conclusion:
Students were given a pH scale to label and color code to place in ISN.
HOMEWORK:
EVERYTHING IS DUE ON MONDAY (10/24TH) Have a good weekend J
Homework Assignments for the weekend J
*** Your project was due on Friday (10/21/16) If you have not turned it in, Monday is the cut off date.

A.     Complete the Online Reading Assignment for CK-12 “Types of Friction” (This assignment is past due as well if you have not completed it. It was due on Friday (10/21/16) It has been extended until Monday. 
qpjuo (GROUP CODE)
B.     Article on Friction (Complete the article summary sheet) “FACT OR FRICTION”


C.     Friction Foldable (use the information from your CK-12 reading and additional notes to complete)

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