Email: wchan@philasd.org
Office Hours: Wednesday and Thursday 3:05pm-4:30pm, or by appointment

Monday, February 28, 2011

Monday Feb 28th

Our objective today: Analyze energy conversions.

DO NOW:
1. What is the objective of today's class?
2. Pick the correct word: Heat energy involves ____stored/moving____ atoms.
3. Convert 68cm to m.
4. Calculate how much KINETIC ENERGY (KE) a 50kg child has if he runs west at a speed of 2 m/s.

ANNOUNCEMENTS:
Your Unit 5 Test is THIS THURSDAY.

CLASS WORK:
Today, we did parts 4, 5 and 6 of the Energy Labs Handout.

You will also have 20 minutes in tomorrow's class to make-up any parts of the handout that you may be missing.

HOMEWORK:
Answer problems 8-12 on Unit 5 Study Guide.

Sunday, February 27, 2011

Friday Feb 25th

Today, our goal was to: score above a 75% on Achieve 3000.

DO NOW:
1. What is the objective of today's class?
2. You place a 2kg pencil on top of a cabinet, 4m above the ground. How much potential energy does this pencil have?
3. Let's say you then push this pencil off the cabinet. Assuming no air resistance, how much kinetic energy does the pencil have?

ANNOUNCEMENTS:
- Your Unit 5 Test is next week, Thursday (3/3).
- We will finish the Energy Labs handout on Monday. Make sure you have Parts 1 and 2 completed so that you won't be behind!

CLASS WORK:
Go to www.empower3000.com and read the article I sent out. The title: "Turn it Down!"
Remember to answer the activity questions AND the thought question!

HOMEWORK:
None! Unless you did not complete HW Packet 4- Energy. It was due today in class.

Have a great weekend!

Thursday Feb 24th

Today's Objective: Analyze Energy Conversions.

DO NOW:
1. What is the objective of today's class?
2. Name one of the energies involved when a stove is turned on.
3. Electrical energy is a special form of ______ energy because it involves the movement of electrons.
4. When is your Unit 5 Test?

ANNOUNCEMENTS:
- Your Unit 5 Test is next Thursday (3/3).

CLASS WORK:
We completed parts 1 and 2 on the Energy Labs Handout.
We will do parts 3-7 on Monday.

HOMEWORK:
Finish up HW Packet 4- Energy.

Wednesday, February 23, 2011

Wednesday Feb 23rd

Today's objective: Identify types of energy





HOMEWORK:
Complete Wednesday's problems on HW Packet 4- Energy.

Friday, February 18, 2011

Friday Feb 18th

Today, we worked on Achieve 3000.

DO NOW:
1. What is the objective of today's class?
2. How is energy related to work?
3. A 2kg mouse is standing on a hill, 6m above the ground. How much potential energy does this mouse have?

CLASSWORK:
Go to Empower3000.com.
Click on mail.
Read the article I sent you, titled: Flying By the Sun

HOMEWORK:
None, unless you didn't finish HW Packet 3.

Have a great weekend!

Thursday, February 17, 2011

Thursday Feb 17th

Today, our objectives were to: (1) Explain the relationship between work and energy (2) Identify 2 types of energy

Follow along with the Power Point below. We took 6 slides of notes and completed a mini-choice board today.



HOMEWORK:
Finish the HW Packet 3! It is due tomorrow!

Tuesday, February 15, 2011

Tuesday Feb 15th

Today, our objective was to continue working on the simple machines mini-project.

DO NOW:
1. What is the objective of today's class?
2. Name 1 similarity between a lever and an inclined plane.
3. Name 1 difference between a lever and an inclined plane.
4. Why is a screw a part of the inclined plane family?

CLASS WORK:
We worked on the simple machines mini-project. This mini-project is due Thursday at the latest.
Don't know what that is? Read Monday Feb 14th's post.

HOMEWORK:
Tuesday's problems on HW Packet 3 - Machines and Energy.

Monday Feb 14th

Today, our objectives were to: (1) Review the simple machines (2) Review how to solve problems involving mechanical advantage

DO NOW:
1. What is one of the objectives of today's class?
2. What simple machine does an AX represent?
3. What is mechanical advantage?
4. You push a box up a ramp 15m. The ramp has a height of 3m. What is the ramp's mechanical advantage?

CLASS WORK:
We will be working on the following "Simple Machines Mini-Project" for the next 3 days. This project will be due on THURSDAY at the beginning of class.

Get a blank piece of paper.

On one side: (a) list all 6 simple machines (b) find pictures in magazines of these machines and glue stick them on. If you don't have any magazines, you can draw the pictures.

On the other side: (a) Define Mechanical Advantage (b) Write the equation for Mechanical Advantage (c) define (in your own words): input force, output force, input distance, output distance (d) Pick one of the problems on pg. 384 in your textbook and solve it.

HOMEWORK:
Solve Monday's problems in HW Packet 3- Machines and Energy.
HW Packet 3 is due FRIDAY 2/18.

Friday, February 11, 2011

Friday Feb 11th

Today, we had 2 objectives: (1) Finish the Simple Machines Handout (2) Achieve 3000

DO NOW:
1. What is the objective of today's class?
2. What is the equation for mechanical advantage?
3. Which simple machine does a SEE-SAW represent?

CLASS WORK:
- Finish the Simple Machines Handout, it was due TODAY by the end of class.
- Go to www.empower3000.com and read this week's article (titled: "A New Kind of Power")

HOMEWORK:
None (unless you're missing anything!). Have a great weekend!

Thursday, February 10, 2011

Thursday Feb 10th

Today, our objective was to solve problems involving mechanical advantage.

DO NOW:
1. What is the objective of today's class?
2. What is mechanical advantage?
3. You push a box up a ramp 4m. The ramp has a height of 2m. What is the ramp's mechanical advantage?
4. Is the ramp helpful?

ANNOUNCEMENTS:
- We took a pop quiz last Tuesday. You have until TOMORROW to make it up.

CLASS WORK:
Complete Part 4 of the Simple Machines handout. If you don't have the handout, see Wednesday Feb 9th's post.

HOMEWORK:
Finish up your HW Packet 2. It is due tomorrow!

Wednesday Feb 9th

Today, our objectives were to: (1) Define mechanical advantage (2) Solve problems involving mechanical advantage

CLASS WORK:
We worked on this handout: Simple Machines Handout. We did parts 1-3 together in class. Follow along with the power point below to do parts 1 and 2.

You will need to see me after school, or one of your class mates' notes to do part 3.

This handout is due TOMORROW (Friday) by the end of class.



HOMEWORK:
Work the Wednesday's problems in HW Packet 2. See the Class Documents link to print the packet, if you do not have one.

Tuesday, February 8, 2011

Tuesday Feb 8th

Today, our objective was to: identify all 6 simple machines.

DO NOW:
1. What is the objective of today's class?
2. What is the purpose of a machine?
3. State the difference between an input force and output force>
4. Fill in the blank: You have a pop quiz ______. Notes are allowed. HW Packet 2 is due ______.


We did take notes in class today.
However, most of the notes were drawn onto the board itself, not on powerpoint.
Therefore, you make up today's notes, you will need to see the master notebook or see a friends' notebook.

We also had a pop quiz today where you were allowed to use your notes.

You have until Friday to make up this quiz. You can come take the quiz:
- before school
- during advisory
- during 3rd or 4th period (as long as your teacher gives you a note)
- after school

Monday, February 7, 2011

Monday Feb 7th

Today, we had 2 objectives: (1) Explain how machines make work easier (2) Define input/output force

ANNOUNCEMENTS:
Pop quiz tomorrow at the end of class! You will be allowed to use your notes.

NOTES:
We took 6 slides of notes today on Machines. The power point is below. Notes begin on slide 9:



HOMEWORK:
Answer Monday's questions in HW Packet 2
Due FRIDAY 2/11.

Saturday, February 5, 2011

Friday February 4

Today, we had 2 objectives: (1) Review yesterday's Power Lab and (2) Achieve 3000

DO NOW:
1. What is the objective of today's class?
2. In yesterday's lab, did you have more power when you walked up the stairs or when you ran up the stairs? Why
3. A 20N cat runs 3m up a tree in 6 seconds. What is this cat's power output?

CLASS WORK:
- If you need help with the post-lab or homework questions, please see me after school.
- Go to empower3000.com and read the article I sent you last week. The title of the email is: "A Super-Powered Suit".

HOMEWORK:
There is no homework this weekend, unless you have NOT done HW Packet 1 or the Power Lab.

Have a great weekend! Be good!

Thursday, February 3, 2011

Thursday February 3

Today we conducted the Power Lab.

DO NOW:
1. What is the objective of today's class?
2. What force are you fighting when you walk up the stairs?
3. Convert 180 cm to m.
4. Click this link and look at the ruler. About how many centimeters are shown?

CLASS WORK:
Print this handout: Power Lab.
Then use the staircase in your house (or your friend's house) and conduct the lab.
The Post-Lab Questions are difficult.
To calculate your power output as you climb stairs, keep the following information in mind:
         Power = Work/Time
         Work = your weight X distance traveled

HOMEWORK:
Finish the lab handout.

Wednesday, February 2, 2011

Wednesday February 2

We had a 2 hour delay today.

Therefore, we just reviewed work and power.

DO NOW:
1. What is the objective of today's class?
2. How are work and power related?
3. A 40N boy climbs up a 3m tree in 10 seconds. How much work did the boy do?
4. What was this boy's power output?

CLASS WORK:
Answer the pre-lab questions on this Power Lab Handout.

HOMEWORK:
Work and Power Worksheet
I know that they may be difficult-- just try your best!

Tuesday, February 1, 2011

Tuesday February 1

Today, we solved problems involving POWER.

Because of the predictive testing, we had an extended 2hour advisory. Therefore, every class was only 35 minutes long.

The power point is below. Notes begin on slide 8 (2 slides).


To do the class work (stations activity), open this document: Power Stations
You don't need to print the document. Just pick 3 of the 6 stations to work on. Write your answers in your notebooks.

HOMEWORK:
Finish this handout: HW Packet 1.