Thursday 23 January 2014

Jan. 23 – Last day of Classes

Hi Everyone,

We took it easy on the last day.  We re-watched some of your favourite videos from the term and then spend the rest of the time studying and reviewing.  Here are all the suggested questions to help you prepare for the final exam.

Chemistry Review:
P. 288 #1-12, 13-22, 43-46, 52, 54, 55

Electricity Review:
P. 588 # 1-18, 19-28, 59-63, 66, 68, 70-73, 75, 

Ecology Review:
P. 158 # 1-14, 18-22, 27-30, 35-39, 41-43, 45-52, 55, 57, 59, 60, 

Space Review:

P. 448 # 2, 4, 6-10, 11-23, 24-35, 37, 39, 40, 42, 44, 46, 47, 49, 50, 51, 53, 55, 56, 60, 62

Good luck and thanks for a great term!

See you at the final!

Dr. G


Wednesday 22 January 2014

Jan. 22 – Electricity Review

More review today!

Here are some suggested questions to do from the unit review:

Unit E Review, P. 588 # 1-18, 19-28, 59-63, 66, 68, 70-73, 75, 

Study tips

  •         Start early
  •          Look at tests and answer any questions you missed.
  •          Do Unit reviews and self quizzes from the textbook. (Pretend it is a real test)
  •          Ask Dr. G for help.

Remember, I am available after school today and tomorrow for extra help and to answer questions individually.

Here's a link to the material I reviewed today:

Good luck!



Tuesday 21 January 2014

Jan. 21 – Chemistry Review

We're in the final stretch!  Only a few days of class left to review.

Exam Details

  •          14 pages: 2 for cover, 1 for equations, 1 for periodic table
  •          1.5 hours
  •          No one leaves in the last 15 minutes.
  •          IEP and ESL have extra time in the library.
  •          BRING: pencil, eraser, scientific calculator, textbook. 
  •          DO NOT BRING: backpacks, binders, jackets, pencil cases, phones
Here are the first and last pages of the exam:




Here is a list of exam review topics.


Chemistry Review

Here are some chemistry questions that are good to try:
  • Unit C Review: Page 288 #1-12, 13-22, 43-46, 52, 54, 55
Here is some of what I reviewed in class.  Have a look at some of the previous blogs posts and handouts:

Friday 17 January 2014

Jan. 17 - Laboratory Examination

Congratulations on completing your lab exams today!

Now you can relax this weekend... right?  Well, just for a bit.  You need to start thinking about the final exam.  Here's a list of topics for you to start studying.

Handout: Final Exam Study Topics

Note: This list of topics is a good start and will cover almost everything we did this term.  Don't forget to review the tests, quizzes and projects you worked on, along with class notes and handouts.

Remember my tips:
  • Start studying early.
  • Do a little bit each day.
  • Figure out all the correct answers to previous test questions.
  • Answer chapter review questions from your textbook.
Good luck!

Thursday 16 January 2014

Jan. 16 – Work/Study Period

For the Lab Exam tomorrow:

  • BE ON TIME!
  • Bring: pencil, eraser, scientific calculator
  • Do not bring: backpacks, books, jackets, etc.
  • Find your assigned station and wait instructions.
Here are more examples of possible dry labs:


The graph shows the population of fish in a certain lake and their tolerance range.

i)               What is the maximum population size of the fish?
ii)             What factors would lead to this maximum size?
iii)            What is the fish’s tolerance range.
iv)            If 10 000 fish were found in the lake, what could you say about the temperature?
v)             If the temperature were to drop to 10° for a long time, then moved back up to 20°, what would happen to the fish population?
vi)            If the temperature were to drop to 0° for a long time, then moved back up to 20°, what would happen to the fish population?




Questions for H-R diagram.

i)               Based on the H-R diagram, how would you characterize our Sun?
ii)             Which stars are warmer than our sun?
iii)            Which stars are cooler than our sun?
iv)            Which types of stars are the brightest?
v)             If a star had temperature of 2000° and a magnitude of -5, what kind of star would it be?
vi)            Which stars are younger?  Which ones are older?

Wednesday 15 January 2014

Jan. 15 – Lab Exam Review

More Lab Exam Review today, here are the notes:

REVIEW CIRCUITS
How to draw circuit diagrams.

1. Draw 3 bulbs in series with a cell.
     - insert an ammeter to measure current through the cell.
     - insert a voltmeter to measure potential difference across the cell.

Answer:

2. Draw 3 bulbs in parallel with a cell.
     - insert an ammeter to measure current through the cell.
     - insert a voltmeter to measure potential difference across the cell.

Answer:



You will use LEDs instead of bulbs.
   ** DO NOT connect the battery until I've checked your circuit.




For voltmeters and ammeters, use the smaller units.
  ** Read the numbers carefully.  There are different scales for different connections.

Notice there are multiple red connections.  The different connections will determine which numbers you need to read on the scale above.
The numbers along the top go with one of the red connectors.
The numbers on the bottom with the other connector.  They will be labelled.


Variables and Units
Potential difference (V)  --> volts, V
Current (I) --> amperes, A (not milliamps)
Resistance ( R) --> Ohms, Ω

Ohm's Law
V = I x R                 R = V / I                 I = V / R

Ohmic resistors: Obeys ohm's law.
The graph of Current (I) vs. Potential Difference (V) gives a straight line.

Example:
An LED has 500 mA of current going through it and a 3.0 V battery.  What is its resistance?
Given: I = 0.5 A,    V = 3.0 V
Required: R = ?
Analysis: R = V / I
Solve: R = 3.0 V / 0.5 A
               = 6.0 Ω
Statement: The resistance of the LED is 6.0 Ω.

MORE PRACTICE ON DRY LABS

P. 319 Table 2
Analyze and Evaluate (b).


Tuesday 14 January 2014

Jan. 14 - Lab Exam Review

Study Tips
  - start early
  - read previous labs
  - answer any questions you missed

  - all numbers have units
  - don't repeat units in a table
  - correct sig. dig.


Physical and Chemical Change

Signs of chemical change
  - colour change
  - odour emitted
  - temperature change
  - bubbles form in liquid
  - precipitate forms in liquid
  - difficult to reverse
  - light emitted

A chemical change means that new particles formed

A physical change means that particles stayed the same.

Observations
   - Only record what you see, hear, smell, touch.
   - Clarity: transparent, translucent, opaque
   - Colour: colourless

Classifying Matter
  - Pure substance: only one kind of particle --> element, compound
  - Mixture: two or more types of particles --> solution, homogeneous, heterogenous, mechanical

Lab Safety
  - You can lose marks if you are being unsafe.

Charging Objects

Law of Electric Charges
  + and – attract
  + and + repel
  – and – repel

Ways to charge things
  - friction: rub two materials together
  - induction: bring a charged object near a neutral object, without touching (temporary or permanent)
  - conduction: a charged object touches a neutral object
  - grounding: a charged object touch a large reservoir of charges and becomes neutral.

Electrostatic Series
  - a list of materials
  - must compare two at a time
  - material on top is more likely to lose electrons

Electroscopes
  - to find the charge on an object
       - Pith ball: tells you if object is neutral or charged
       - Metal leaf: tells you if object is neutral or charged

  - use a rod that has a known charge to determine if object is positive or negative.

Homework: 
P. 137 - 138 (Bioamplification)

P. 52 (Tolerance Ranges)

Example of a dry lab:
  1. What is the optimal temperature to grow this plant?
  2. At what temperatures would the plant die?
  3. Describe how the plant would grow at 10° C.
  4. Based on this data, what areas in the world would you expect to find this plant?