HAPPY HALOWEEN

HAPPY HALLOWEEN!

Have a fun, and enjoyable weekend!

I shall see you lal Monday morning to continue with physics.
PLease bring your textbooks, calculator and pencils to class.

DOUBLE DAY !

Today we discussed the following topics.

10.2 Energized and De-Energized charges. Pg 330 - 332.
Please note the formula on pg 331.
Follow the example on pg 331 using the GRASS method.

10.3 resisting the Movement of Charge. pg 337 - 338, 342.
Please copy the chart on pg 342 into your notes.
Please not the formula on pg 338.
Follow the example on pg 338 using the GRASS method


HOMEWORK:
Please complete the following:
pg 336 # 1 - 5
Pg 342 # 2-5

Current and Potential difference worksheet
Resistance Workseet (do not do question # 9 )

Please ask a student to copy the worksheet given or please see me in my workroom on your lunch period. Workroom #7

HALLOWEEN FUN!!!
Friday is Notre Dame's HALLOWEEN DAY,
for all those who volunteered to cut and create our 4 pumpkins, please make sure you have paper, markers, knives and spoons to cut out the jack o'lanterns.
Please use the comment section to discus what as a class out 4 themed pumkins will be. Remember you will have to bring any costumes or materials to do the theme as well.

Current Electricity and Formula

To understand today's lesson and notes please refer to th concepts in your txtbook. Refer to title SECTION 10.1 MOVING CHARGES


HOMEWORK:
Please complete pg 15, 16 and 17 of course kit.
to do this you will first need your textbook and use pg 324.
All word equations on blackboard are below.
Please use the GRASS method to complete.

1. What is the current in a circuit if 5.0 c of charge flows past an ammeter in 0.5 s?

2. How much time has elapsed if 0.80 A of curent is measured and the charge is 85 c ?

3. How many coulombs of charge will pass through a wire in the current reads 11.0 A in 3
seconds?

Answer #2 - 5 on pg 329 in textbook as well.

CULMINATING ACTIVITY

Here is a complete breakdown of your culminating activity.
Just incase you lost yours (hopefully not) you can read this to ensure that you do it correctly.

GRADE 9 CULMINATING PROJECT
SOME GENTLE REMINDERS, SUGGESTIONS AND GUIDELINES

PART A: SCIENCE, TECHNOLOGY, SOCIETY AND THE ENVIRONMENT RESEARCH PAPER

Each pair of students will be assigned a topic for which they are to prepare a 15-minute presentation. A topic list will be provided from which they will choose on a first come first serve basis. The topics will be related to the fields of chemistry and/or biology and how they are related to science, technology, society, the environment and their affects on everyday life matters and health.

Students will have to prepare and make available a one page summary sheet which will be distributed to the class and to the teacher. The summary sheet will be point form highlighting the main points and interesting facts from their presentations. Each group will also have to prepare 5 multiple choice and 5 true and false questions referring to the information provided on the one page summary.

A 20 mark knowledge quiz will follow the completion of the presentations.

All groups will need to be ready to present on the first day of presentations as the order will be random.

DUE DATE: Tuesday, January 18th, 2005


PART B: LIGHTING UP THE UNIVERSE

PART 1 of 2
Your teacher will provide you with a constellation to be researched.
You and a partner must research and write 2 – 3 paragraphs on your given constellation. The paper should include the following:
· Where it is found in the solar system. (Including coordinates)
· The types of stars involved. (I.e. Intensity, size, distance)
· Detailed sketch of the constellation. (colour, ruler, scale, labels)


DUE DATE: Friday, January 21, 2005

PART 2 of 2
Using the constellation that you have researched, create a working model using your own electricity kits, and black construction paper. Suggested materials are Christmas lights (dollar store variety), 1-2 9V batteries for a power source, paper clips and thumb tacks for switches. There is no need for expensive materials; your group should not be spending more than 15 dollars.

You must provide the following:
Draw schematic diagram of your working model (switches, types of wire, connections, bulbs, wattage)
A 1 page maximum paper describing the type of circuit(s) used and why, and indicate the sources of error that you and your partner encountered in the design and development of your model.

3 DAYS IN CLASS ONLY January 21-25, 2005

What is a spark? How is lightning formed?

A spark is a stream of electrons jumping across an air gap, heating the air until it glows and expands. Certain conditions can cause enough static electricity buildup to cause a spark or lightning. A spark often requires both a conductor and non-conductor. Lightning is an extreme example of a spark.

To understand what a spark is and how it is formed please read pg 309 - 310


Please read the text on pg 313 - 315. This will help describe how lightning is formed in case you missed today's class notes.
Make a copy of the diagram of how lightning is formed in your notes.


HOMEWORK:
Make sure that you answer the 6 questions that were on the blackboard!!

And incase you want a little light ( hahah get it light , spark, ya lame I know!) reading use this web site. http://www.findarticles.com/p/articles/mi_m1590/is_4_58/ai_79967168

Here is a brief and funny little clip on how lightning is created.
http://ksnn.larc.nasa.gov/videos_cap.cfm?unit=lightning



Click on here to see what the CIRCLE OF DEATH experiment looks like which we preformed in class. It was a shocking experience!http://cosmology.berkeley.edu/~swlh/tesla/sparks.jpg


Through the CIRCLE of DEATH we can experience, in a controlled way, how lightning works through familiar activities that generate a mild electrical spark or static. The principles behind the controlled experiences and actual lightning are basically the same. A closer look at lightning reveals that inside large cumulonimbus thunderclouds, violent air currents force water droplets and ice crystals to gain different charges and fill the cloud with static electricity. Positive charges collect at the top of the cloud, while the bottom becomes negatively charged. These charges become so intense that electricity is released with an enormous bolt, either within the cloud or to the ground. Lightning, then, is a huge discharge of static electricity that fills the gap between positive and negative charges.

http://bhs.broo.k12.wv.us/homepage/chip/current/rmaxwell/sparks.jpg

Charge Detective Lab - Pith Balls

Today you were to complete an in class, independent lab.
This lab was based on the past few days of learning materials.
If you have been studying and used your notes efficently during the open book lab, you would have done well.

Tomorrow, you will be learning how a spark is made, how lightning is produced, and wil lbe asked to volunteer for a few really SHOCKING experiments as well.

HOMEWORK:
Friday is your chapter 9 test.
Start reviewing concepts to get prepared.
Thursday will be a full in class period for review.

Charging by Induction

Charging by Induction

A charged object may induce a charge in a nearby neutral object without touching it. For example, if a positively charged object is brought near a neutral object, the electrons in the neutral object are attracted to the positive object. (This is using law 3 of our laws of repulsion and attraction)

Some of these electrons flow to the side of the neutral object that is nearest to the positive object. This side of the neutral object accumulates electrons and becomes negatively charged. Because electrons leave the far side of the neutral object while its protons remain stationary, that side becomes positively charged.

Since the negatively charged side of the neutral object is closest to the positive object, the attraction between this side and the positive object is greater than the repulsion between the positively charged side and the positive object. The net effect is an attraction between the objects.

Similarly, when a negatively charged object is brought near a neutral object, the negative object induces a positive charge on the near side of the neutral object and a negative charge on the far side. As before, the net effect is an attraction between the objects.

The induced charges described above are not permanent. As soon as the charged object is taken away, the electrons on the other object redistribute themselves evenly over it, so that it again becomes neutral. The way that we cna alter the overall charge of the object while using induction is to use a ground. A ground allows electrons to flow inot or out of the object depending on the charge of the object that is brought near to our neutral object.

Here is a great little link that will show you a simple diagram to help explain today's lesson.
http://www.physics.sjsu.edu/facstaff/becker/physics51/images/22_04_Charging_by_induction.jpg OR
http://solomon.physics.sc.edu/~tedeschi/courses/212/induction.jpg



HOMEWORK:
This will be shown in your course kits on pr 11 and 12. Please note there are prinitng mistakes in the kit and will need to be corected during today's lesson. We will practice our drawing techniques to prepare ourselves for tomorrows lab. Charging detective lab 9B.
Pg 306 # 1 - 5
Read pg 311 on grounding and take notes.

Charging by Contact and video

Wow 2 hrs of science hoorah!
Today we have an assembly, however, you are in first period for almost 2 hrs long.
I will try to make it as painless as possible today!
Today we will discuss the lab that you did yesterday in class to see if there were any questions or concerns about your results.

Today we will be covering the way a charged object can act upon a neutral object.
The process in which we will be learning today is called CHARGING by CONTACT.


NOTE: Charging by Contact

Objects become electrically charged in either of two ways: by contact or by induction.
(We will look at induction in next class)
A charged object transfers electric charge to an object with lesser charge if the two touch. When this happens, a charge flows from the first to the second object for a brief time. Charges in motion form an electric current.

Charging by contact can be demonstrated by touching an uncharged electroscope with a charged comb ( or any object really). An electroscope is a device that contains two strips of metal foil, called leaves, that hang from one end of a metal rod. A metal ball is at the other end of the rod. When the charged comb (or object) touches the ball, some of the charges on the comb ( object) flow to the leaves, which separate because they now hold like charges and repel each other. If the comb is removed, the leaves remain apart because they retain their charges. The electroscope has thus been charged by contact with the comb.

This flow of charge between objects with different amounts of charge will occur whenever possible. However, it requires a pathway for the electric charge to move along. Some materials, called conductors, allow an electric current to flow through them easily. Other materials, called insulators, strongly resist the passage of an electric current.


We will be watching a video on conductors, insulators and charging objects by contact today.

HOMEWORK:
Pease fill in the course kits on pages 13-14 as well as to complete pg 8 in the kit by reading pages 316 - 317 of the textbook.

ELECTROSTATIC SERIES, Conductors and Insulators

Yesterday we rubbed a balloon with a wool sweater, and learned that neutral objecs can be charged negatiely or posiitively by friction. The question is how do we know which object has which specific charge? Can we see the charge physical to tell which it is?
Well of course not!
We have to use a specific table called the Electrostatic Series.
This can be found in your course kits on pg 5.

Not all objects however can hold or move electrons in the same capacity.
Objects that can move electrons more easily are called conductors.
Objects that can not move electrons easily or resist them are called insulators.

HOMEWORK:
Using your textbook and the word search given today identify which materials are conductors or insulators.

Tomorrow we will be conducting LAB 9A.
There will be a 3 mark pre-lab quiz.
Make sure you know the lab in detail!
The lab can be found on ph 298 and 299.
You will complete this lab in groups of 4 and must complete both parts by the end of the calss.

Introduction to Static Electricity

Everyone has thrown a birthday party or some celebration at one time or another and used balloons as a decoration. Ever want to know why the balloon "clings" to the wall? Think it is magic?

Well no, it is not magic, it's SCIENCE!

In today's science lesson you would have learned how a balloon uses
static electricity and the 3 laws of Electricity to help explain this phenomena.

To further practice and understand the wonderful concept of
static electricity, "electricity that does not flow" please complete the following.

HOMEWORK:
Read textbook pages 295 - 298
Define all KEY TERMS on pg 295
Use course kits pg 1 - 3 and fill in the blanks ( text book 295- 302 will help)
Answer # 1 - 3 on pg 300 from textbook

INTERACTIVE GAMES
Here is a link to some future Electricity topics we will study in class.
These are some fun little games to get teh general idea for each topic.

http://homeschooling.about.com/gi/dynamic/offsite.htm?site=http://www.sparkingreaction.info/more%5Fgames.shtml

PHYSICS UNIT OVERVIEW

MR. V.SMITH
Physics Unit Overview

** This is a generalized breakdown of what will be covered in the first Unit. Dates may be subject to change depending on specialized daily time tables changes to accommodate special functions within the school. (I.E : school concerts, schol assemblies, student athletic recognition, early dismissals, ect.)**

DATE / MATERIAL / TOPIC

OCT 12 Intro to Static Electricity / Laws of attraction and Repulsion
OCT 13 Electrostatic Series / Conductors / Insulators
OCT 14 Lab 9A: CHARGE –IT (part 1 & 2)
OCT 15 Charging Electroscopes / Grounding and by Contact
OCT 18 Charging Electroscopes / Induction & Lab 9B Pre- Lab
OCT 19 Lab 9B: CHARGE DETECTIVE
OCT 20 How a spark is made / Lightning / Lightning Rods
OCT 21 CHAPTER 9 REVIEW
OCT 22 CHAPTER 9 TEST
OCT 25 Introduction to CULMINATING ACTIVITY
OCT 26 Introduction to Current Electricity / Moving Charges / Formula
OCT 27 Potential Difference / Voltage / Formula
OCT 28 Resistance of Electricity / Formula
OCT 29 Power and Percent Efficiency of Electrical Devices / Formulas
NOV1 Series and Parallel Circuit Formulas
NOV2 Electricity Problems (class to review and practice all formulas)
NOV 3 TAKE YOUR KIDS TO WORK DAY
NOV4 REVIEW CONCEPTS
NOV5 LAB day 1 – Electricity Kits
NOV 8 LAB day 2– Electricity Kits
NOV 9 LAB day 3– Electricity Kits
NOV 10 PHYSICS UNIT REVIEW
NOV11 PHYSICS UNIT REVIEW
NOV12 PHYSICS UNIT TESTS

TEST DAY

Well good job to everyone today.

It must feel great to get that test out of the way before your

THANKSGIVING WEEKEND.

I hope that each and everyone of you has a great 4 day weekend, and will have a lot of fun things to share on tuesday when we start our new unit.

PHYSICS

CHEMISTRY UNIT ONLINE QUIZ MATERIAL

Are you ready for the

HUGE UNIT TEST?

Try these wonderful little website quizes.
These are great to use before a test!

http://www.quia.com/pop/11962.html

http://www.quia.com/pop/4774.html

http://www.quia.com/custom/43377main.html

http://www.quia.com/rr/1079.html



TEST BREAKDOWN:
A general periodic table is provided!
Knowledge /61 marks

- true and false,

- multiple choice,

- matching,

- and filling in the blank

Making Connections /11 marks

- 2 Short answers

Communication /16 marks

- 2 Short essay questions

CHEMICAL BONDING REVIEW

HOORAH...we understand Chemical bonding.
The worksheets provided in class today should help you become absolutely perfect in your BOHR-RUTHERFORD diagram techniques, and the ability to identify and produce specific bond structures. IONIC or COVALENT.

HOMEWORK:
Please complete the following questions based on chemical bonds.

Chapter 8 Review pg 282 - 283 #1 -4, 8 -14, 22

Here also are the UNIT REVIEW questions to get a head start.
pg 288 - 291
# 1-4, 7-9, 11, 12, 14, 15, 17-20, 22, 23, 28, 29, 33, 36

You will have time tomorrow in class to work on these. However, the more you try tonihgt the greater the opportunity to get help during class time to clear up any problems, misconceptions, or concerns you have.

Keep working hard! You are all doing great!

ASK and you shall RECIEVE!
You asked for some examples....
Here is a great web site to clerify some notes, and some great visual examples as well.
http://images.google.ca/imgres?imgurl=http://nutrition.jbpub.com/2e/images/images/3.3.gif&imgrefurl=http://nutrition.jbpub.com/2e/chemistryreview4.cfm&h=215&w=360&sz=27&tbnid=fvcB6SXLGJkJ:&tbnh=69&tbnw=115&start=17&prev=/images%3Fq%3Dionic%2Bbond%2B%26hl%3Den%26lr%3D%26ie%3DUTF-8%26sa%3DG

OR

http://www.accessexcellence.org/RC/VL/GG/cov_IonicBs.html

OR

http://mychemistrypage.future.easyspace.com/General/bonding/ionic.html

MOLECULAR BONDS

Today we looked at the bonds of MOLECULAR compounds.
These compounds use covalent bonds to hold the structures together.
MOLECULAR bonds exist between non-metals and non-metals.
The atoms share their electrons with the other atoms.
There are three types of bonds.
SINGLE - one bond between atoms
DOUBLE - two bonds between atoms
TRIPLE - three bonds between atoms

HOMEWORK:
Please read the following pages from the Science Power 9 textbook pg 268 - 273
Take your own summary notes on MOLECULAR BONDS.
Answer the following questions found on pg 278.
Questions # 1 - 6.

START reviewing all your notes for this unit, if you haven't allready.
UNIT TEST is this thursday!