Student Portal
abakx@glenfir.comArthur Bakx
Science 9
2008-05-14 13:02:03
Yesterday, the students visited the Dominion Radio Astrophysical Observatory as part of their field trip to the White Lake grasslands.
Homework assigned:
-
Assignments NHI:
chapter 9 quiz in workbook - PG, MB
10.4 CYU 1-3, 5, 6, 9 - AN
11.2 CYU 2-7 - AN
radio astronomy assignment - AN, PG, EJ, MB, KP
11th hour power generation and astronomy
2008-05-06 16:39:08
The last few classes the grade 9 students investigate energy conversions, and electricity generation. They viewed fragments of the documentary film "11th Hour", and investigated the problems with our energy use and resource extraction. As well, solutions were discussed.
Today the students read section 12.5 on the history of astronomy and investigated radio astronomy.
Homework assigned:
complete radio astronomy assignment complete Rothney assignment => due Tu, May 13
Assignments NHI:
chapter 9 quiz in workbook - PG, MB
10.4 CYU 1-3, 5, 6, 9 - AN
11.2 CYU 2-7 - AN
11th hour assignment - AN
11th hour lesson
2008-04-21 10:17:32
click the following link to download 11thhour.rtf:
Resistors and Ohm's Law
2008-04-16 11:11:51
Yesterday, the grade 9s experimented with resistors. They measured the voltage over and current through two different resistors as a function of the number of cells. Their results show that the current through a resistor increases linearly with the voltage, confirming Ohm's law.
Homework assigned:
- complete Try This (p. 315) A, B, C 10.4 CYU 1-3, 5, 6, 9 => due Friday, Apr. 18
Assignments NHI:
- chapter 9 quiz (workbook): PG, AN, MB
current and voltage in circuits
2008-04-11 12:37:08
Today we reviewed electric current, reading ammeters, and drawing circuits. Then, the students studied electric potential difference (voltage). To get a better understanding of current voltage, and resistance in circuits they constructed and tested virtual circuits. See website below:
http://phet.colorado.edu/new/simulations/sims.php?sim=Circuit_Construction_Kit_DC_Only
Homework assigned:
7.3 CYU 1,3,5-10 => due Tu, Apr. 15
Assignments NHI:
Ch. 9 Quiz in workbook - EJ, PG, MB, AN
circuits and diagrams
2008-04-08 16:02:36
Todaystudents worked together to solve a problem involving charging by induction. Then,theypractised drawing and interpreting circuit diagrams. By popular demand, anotherexperiment was conducted in discharging with the Van de Graaff generator.
Homework assigned:
Study 10.2 Electric current complete CYU 1, 2, 5-10 => due Fri, Apr. 11
Assignments NHI:
Ch. 9 Quiz in workbook - EJ, PG, MB, AN
resistor circuits
2008-04-02 16:49:12
Last Tuesday, we reviewed concepts of static electricity, and the students worked on a review quiz. We reviewed definitions of current and voltage, and we discussed Ohm's Law. Studentsbuilt circuits with one or two resistors, measuried current and voltage, and interpreted their results.
Homework assigned:
Complete Chapter 9 Quiz in workbook => due Tu, Apr. 8th
current electricity
2008-03-12 16:14:11
In Tuesday's class (the last before the break), the grade 9s were introduced to current electricity and circuits. They viewed two short video documentaries on this topic and took notes. After watching an online simulation of current, voltage, and resistance, the students experimented with cells in series and parallel arrangements.
We will completethe electricity unit in term 3.
The online simulations and games :) are available through:
http://phet.colorado.edu/new/index.php
Enjoy your break!
Mr. Bakx
charging 2
2008-03-05 08:24:16
In yesterday's class we reviewed 9.1 Types of Electric Charges and 9.2 Charging by Friction, Conduction, and Induction. The "bouncing path ball" experiment was repeated as a demonstration and analyzed.
Homework assigned:
9.1 CYU : 1,3,5,8,9 => due Tu, Mar 11
Assignments NHI:
"How are neutral objects attracted to charged objects?" drawing and explanation - AN
charging
2008-02-29 14:49:21
Today students experimented with three methods of charging an object: by friction, by conduction, and by induction.
Homework assigned:
Hand-out "Lesson 4: How an Object is Charged": complete Concluding Questions of both Part A and Part B. => due Tu, Mar. 4
Assignments NHI:
Explain how any charged object will attract a neutral object (using words and a drawing). (See 9.1) - AN
static electricity 1
2008-02-26 15:50:03
Today the students wrote the test on chapter 7 - Atomic Theory.
After that we started Unit C on Electricity, with an investigation of static charges and their interactions. This proved a rather shocking experience for some:)
Homework assigned:
It was demonstrated in class, that any charged object will attract a neutral object. The assignment is to explain this observation using words and a drawing. (See 9.1)
Due: Fri, 2/29
Assignment NHI:
7.2 CYU 1-8 - AN (not complete)
Atomic theory
2008-02-26 13:22:02
From today onwards homework assignments will be posted here.
Last Friday we reviewed chapter 7 for today's test.
Homework assigned:
prepare for Ch. 7 test => Tu, 2/26 (today)
Assignments NHI:
7.2 CYU 1-8 - KP, AN (incomplete)
Chapter 6 Review - answers 1-14
2008-01-19 19:28:39
Ch 6 Review (textbook p. 198) - Review Key Ideas and Vocabulary
1. a, 2.c, 3.b, 4. a, 5. c, 6.
7.a)Rn, radon b) Si, silicon c) Cd, cadmium d) P, phosphorous e) K, potassium f) Fe, iron
g) I, iodine h) Ca, calcium i) Ra, radium j) Ag, silver
8.a) F: it was natural chemistry; b) F: their goal was to find purity in life and in substances;
c) F: compounds are made of elements; d) F: the organization was by atomic mass and the properties of the elements; e) F: periods are the rows in which the properties change from metallic to non-metallic as you move to the right of the table. f) F: metals are shiny and good conductors of electricity
9. A period is made up of the elements between two repeating properties. They make up the rows in the modern Periodic Table. The properties of the elements become less metallic as their atomic number increases. A group is a family of elements that share some common properties. They make up a column in the modern Periodic Table. The properties of the families become more metallic as their atomic number increases.
10. a) probably a solid b) shiny lustre c) malleable d) will conduct electricity
11. The element is likely a metalloid. Although it has metallic properties, it is brittle, which means it is more likely a metalloid.
12. The metalloids, and their ability to conduct under some circumstances and not under others, are the group most necessary for producing semiconductors.
13. Mendeleev predicted the future discovery of germanium, gallium, and scandium.
14. As soon as there was a language and a symbolic system to communicate about new elements and compounds, there was a great increase in the number of elements and compounds discovered and described.
Chapter 6 Quiz - answers
2008-01-19 19:27:45
Students are encouraged to complete the chapter 6 quiz on their workbook, on p. 108-110. The Review exercises at the end of the chapters 5 and 6 in the textbook are recommended as well. Answers are printed below.
The test is coming Tuesday, Jan 22. Be prepared!
Mr. Bakx
Ch 6 Quiz workbook:
Part A.:
1. A-m, B-f, C-h, D-e, F-k, G-b, H-d, I-g, J-a, K-j, L-i, M-l
Part B:
2. d, 3.c, 4.a, 5.c, 6.b, 7.a, 8.d, 9.b, 10.d, 11.d, 12.a, 13.b, 14.b
Part C;
15. bromine, 16. increasing, 17. lead / plumbum
Part D:
18.ductility and electrical conductivity;
19. a) C, Cr, Ca, Cm, Cd, Ce, Cn, Ci, Ct but C, Cr, Ca, Cm, Cd, Ce are already taken, b) Cn, Ci or Ct
20. a) scandium b) the next element's properties didnot fit with the other elements in the vertical group.
Chapter 5 and 6 test
2008-01-13 17:24:57
The grade 9 students will write a test on chapters 5 and 6, on Tuesday, Jan 22.
See below for a list of main concepts and skills to review.
Ch. 5 "Properties and Changes"
- Classification of matter: heterogeneous vs. homogeneous mixtures, pure substances vs.mixtures, elements vs. compounds (5.1)
- Properties of matter: definition, physicalvs. chemical properties (5.2)
- Physical and chemical changes: definitions, characteristics (5.3)
- Kinetic molecular theory: explaining changes of state (5.4)
Ch. 6 "The Elements"
- Ancient vs Modern Chemistry: why did it make sense for alchemists to try to turn lead into gold? (6.1)
- Ancient vs Modern Chemistry: Belief in authority vs Skepsis, pure theory vs experimentation (6.1)
- Elements: modern definitions (5.1, 6.1)
- Elements: names, symbols (6.2)
- Classifying elements: metals vs nonmetals (6.2)
- Organizing the elements: ordering by mass and properties, the Periodic Table (6.3)
Science Fair time schedule
2008-01-13 14:36:31
Date of TGS Science Fair: Wed, Feb. 20
Deadlines:
> Experimental design, written procedure, list of materialsTh, Jan. 24
> Experiments completed Th, Feb. 6
> Results, and Analysis / Discussion Wed, Feb. 13
> Conclusion Evaluation, abstract,and backboard Mon, Feb. 18
Science Fair
2007-12-20 16:57:30
Still notsure how to get started on your Science Fair project?
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