Merry Christmas

I'm not sure how many people actually look at this thing. If you are one of the few I would like to wish you a Merry Christmas. I will have semester two work posted after the new year.

End of the Semester

The test Monday on Forces of Fluids didn't go so well. I don't know if it was the way it was presented or just a Monday test issue.

We began studying simple machines this week as well as discussing work and power.

Exemption notification is due on Monday so grading for my class is shut down today. We will take the December EOM test next Wednesday. Semester exams will be on Thursday/Friday.

Thinklink results were returned this week from the testing last month. Overall scores were about what was expected for a predictive assessment test. Ask your child about their results or you may email me.

Forces in Fluids Extra Notes

Pressure-the force per unit area exerted on an object.

Buoyancy- the ability of a fluid to exert an upward force on an object immersed in it

Archimedes Principle- the buoyant force on an object in a fluid is equal to the weight of the fluid displaced by the object.

Pascal's Principle- states that pressure applied to a fluid is transmitted unchanged throughout the fluid.
Ex. toothpaste
hydraulics

Bernoulli's Principle- as a velocity of a fluid increases, the pressure exerted by the fluid decreases.
Ex. airplane wing

Gas Laws

Boyles Law

Charles Law

Week of December 1-5

We are beginning to focus on Fluids and Forces of Fluids. This is Chapter 12 in their book but I'm not a big fan of books.
Monday-Computer Lab
Tuesday-Intro to Fluids (reviewed key concepts of states of matter, pressure, density) Introduced Boyles Law and Charles Law) HW: Chp 12 key terms and self checks
Wednesday- Continue discussion of fluids: Archimedes Principle, Bernoulli's Principle, Pascal's Principle. HW: (probably) 3 worksheets
Thursday- Review Game/Possible lab.....
Friday-Test (They really need to study their notes)

Next week we will cover Simple Machines.

Progress Reports

Progress Reports go home on Friday, November 21st.

Tests

Force/Newton's Laws test on Thursday
EOM Test on Friday
Lots of hw tonight unless they did it in enrichment. Very little class time to get it done.

Homework this week (11/17-11/21)

Monday night-no homework
Tuesday night- yes, worksheet(s)/possible studying for test on Wednesday
Wednesday night- depends on whether or not the Force test is on Wed/Thurs
Thursday night- Study for November End of Month Assessment (notes and study guide)
Friday night- if I gave it 95% wouldn't find time over the 9 days to do it :)

Forces and Newton's Laws Notes (extra)

A Force is a push or a pull. Examples of forces can be pushing a box or gravity pulling on a thrown baseball.

Formula Force= Mass * Acceleration

Units:
Force-Newtons Mass- kilograms Acceleration- meters/second square
Newton- kg* m/s squared

Example: A box is pushed across a floor with an acceleration of 3 m/s squared. The box has a mass of 20 kg. Find the force the box is pushed

F=ma
F=(20 kg) (3 m/s squared)
F= 60 N

Newton's Laws

Law 1: An object which is moving or at a state of rest does not change its state of motion unless a force acts on it.

Law 2: a=m/F

Law 3: For every force, there is an equal and opposite force.


More Problems

1. Ryan hit a baseball with an acceleration of 30 meters per second squared. The mass of the baseball is 0.5 kg. What was the force?

2. How much force is required to give an object with a mass of 22 kg an acceleration of 12 m/s squared?

3. How much force is required to give a 5000 kg crate an acceleration of 2 m/s squared on an icy surface without friction?

4. A 2,200 kg car accelerates at the rate of 2.6 m/s squared. How much force is required to achieve this acceleration?


These notes will supplement what we will be covering next week in class.

EOM Reassessment/Next week

1) The EOM Reassessment for October was put off until Thursday due to the Thinklink testing today.
2) Next week we will be covering Newtons Laws and trying to cram it all in before Friday. I hope to give the November EOM test on Friday, November 21. Expect homework next week on most nights.

EOM Test/Reassessment

The EOM Test for November will be on the 21st. The EOM reassessment (students scoring below 70%) for October will be on Wednesday, November 12. I will review for both tests and students will have a study guide/notes.

***Reassessment study guide given out on Monday. We will also be doing ThinkLink Testing on Wednesday. Somehow we will make it work. **

Quiz: Monday, November 10

We will have a quiz on Monday, November 10th. The quiz will cover the concepts of speed, motion, and velocity.
Key formulas:
Speed=distance/time Velocity=speed + direction
Velocity vectors (arrows): same direction (add) opposite directions (subtract)
right triangle (use Pythagorean Theorem)

Example #1: A car travels north for 120 miles. The car travels for 3 hours. Find the speed of the car. Speed=distance/time
speed=120 miles/3 hours
speed=40 miles/hour
****A velocity problem would work the same but have a direction in the answer.**

Example #2: A train travels at 55 km/h for 4 hours. Find the distance the train travels.
Speed=distance/time
55 km/h= distance/4 hours
(55 km/h) (4 hours) = distance
220 km = distance

Example #3: Find the average speed of the car if it travels 200 miles in 3 hours on Day 1 and 200 miles in 5 hours on Day 2.
Average speed= total distance/total time
Average speed= 400 miles/8 hours
Average speed= 50 miles/hour


Students should have examples in their notebook. They should also study velocity vectors and their motion notes.

Welcome to Physical Science

Welcome to Mr. Steele's Physical Science site. I will use this blog to keep parents and students updated on the happenings of physical science at CMS. I will try to keep homework and quiz information posted on a regular basis.