Monday, November 30, 2015

Lab #3 – Calculating Work

Lab #3 – Calculating Work

Work = Force x distance
Work = (Force)(Distance)
W = Fd

How can a ramp help us pull a heavy object up to a greater height?


Ruler, chair, ramp (inclined plane), weights, spring scale, various metallic objects


A.  Work done without ramp
Force (Newtons)
Distance (cm)
Work (Joules)
20 g Weight
50 g Weight

100 g Weight

200 g Weight

500 g Weight

 Metal Object

B.  Work done with ramp
Force (Newtons)
Distance (cm)
Work (Joules)
20 g Weight
50 g Weight

100 g Weight

200 g Weight

500 g Weight

Metal Object

 Make another Hypothesis: Use your hands to feel the trash bags, plastic maps, sandpaper, cloth, etc.  Which of these will cause more work to be done on the weights? 

C.  Work done with ­­­­________ and ramp
Force (Newtons)
Distance (cm)
Work (Joules)

20 g Weight

50 g Weight

100 g Weight

200 g Weight

500 g Weight

Metal Object

D.  Work done with ­­­_________ and ramp
Force (Newtons)
Distance (cm)
Work (Joules)
20 g Weight

50 g Weight

100 g Weight

200 g Weight

500 g Weight

Metal Object

1)   Make two graphs to compare your Results: Graph 1 will compare the data in A and B, Graph 2 will compare the data in B, C, and D.
2)   How did the weight (force pulling down) affect the amount of work done on the object?
3)   Compare/Contrast the trial with the least amount of work to that with the most amount of work.
4)   Part 1 (A,B): What is your Independent Variable?
5)   Part 1 (A,B): What is your Dependent Variable?
6)   Part 1 (A,B): What are your Constants?
7)   Part 2 (B,C,D): What is your Independent Variable?
8)   Part 2 (B,C,D): What is your Dependent Variable?
9)   Part 2 (B,C,D): What are you Constants?
10)                Make an inference: Which will increase the friction of the object you are pulling, the plastic map/plastic bag or the sand paper? 
11)                How did the sand paper affect the amount of work done on the object?
12)                Compare/Contrast the work done between using the ramp and not using the ramp.

 What was your problem?
 Restate your hypothesis.  Was it right? wrong?  why or why not?
Briefly describe your procedure.
 What did you learn in this lab?
 What did you like about this lab?
 What were some challenges you had to deal with?
 What could you do next with this problem?  What other tests could you perform?
 Write down any other additional thoughts, observations, inferences, etc.

Thursday, November 19, 2015

Lesson Plan for Considine’s Science classes: 601, 602, 603, 613

Lesson Plan for Considine’s Science classes: 601, 602, 603, 613
The textbooks and workbooks are located in the back of 509.  Please return the books to 509 at the end of the period so the next class will be able to use them.  The students are NOT to write in the notebooks; they are to write ALL of the information in their Science Notebooks. 
A.  Science Workbook
1.   Page 27-29: ALL
2.   Page 30: Complete, Summarize, Connect It
3.   Page 31: Predict, Define
4.   Page 32: Organize, Analyze
5.   Page 33: Model, Connect It

B.   Science Textbook
1.   Page 73: Launch Lab
2.   Page 84: Physical Setting-Define
3.   Page 94: Bionic People

C.   Science Article due Monday!

Monday, November 16, 2015

Chapter 3 HW

1. C3S1 pp. 74-76, RC, BQ, Applying Math #1-2, SC#1
2. C3S2, self check #1, p. 84 Physical Setting "Define"; Find 3 examples of a machine making work easier.

Work = Force x Distance


1. ____ is the use of _____ to move an object some ________.
2. What are the units for Force?
3. What are the units for Distance?
4. What is a Joule (J)?
5. Energy = Work    <----- Explain!

Friday, October 30, 2015

Energy Sources

1. Watch the BrainPOP video, "Energy Sources", take the Quiz, then write the answers in your Science Notebooks.

2. Play the , "What is Energy?" game.  
Match all the types of energy correctly, then answer the following questions in your Science Notebooks.
A. Why do we need energy?
B. What are the different forms of energy? 
C. Pick three forms of energy; where do you see evidence of each form of energy as you complete this assignment?
D. Put the following information into your own words: You can change energy from one type to another.
E. Complete the Quiz; how many did you get right?

3. C2S1; vocabulary, Physical Setting p. 44, RC, BQ, SC #1-5

4. •C2S2 (pp. 48-53); vocabulary, RC, BQ, SC #1-5
5. •C2S1: read pp. 44-46, 

6. •HW:  C2S3 pp. 55-57 – RC, BQ, vocabulary, Physical Setting p. 57,SC #1
Brainpop – “fossil fuels” video and quiz
7.  a. Finish C2S3 SC #1,2,4
 b. C2 Visualizing Main Ideas and Chapter Review
 # 2, 3, 5, 6, 7, 8, 10-22, 24, 26, 27, 30 29, 31

Wednesday, October 28, 2015

Chapter 2 Review

Energy transforms...

energy  (ěn'ər-jē) Pronunciation Key
The capacity or power to do work, such as the capacity to movean object (of a given mass) by the application of force. Energycan exist in a variety of forms, such as electrical, mechanical,chemical, thermal, or nuclear, and can be transformed from oneform to another. It is measured by the amount of work done,usually in joules or watts.
 A. Types of Energy:
     1) Potential Energy is the energy of position.  An object's mass andheight give an object its potential energy.  The greater the mass or the higher an object is, the more P.E. an object has.
  Potential Energy = (mass)(gravity)(height) or P.E. = mgh

     2) Kinetic Energy is the energy of movement, motion.   An object's massand speed/velocity determine its kinetic energy.  The greater the mass and the more speed an object has, the more K.E. an object has. 
Kinetic Energy = 1/2(mass)(velocity)(velocity) or K.E. = 1/2 mv2     

B. Forms of Energy
Energy can come in a variety of forms.

1. Atomic/Nuclear Energy is produced when you split atoms. 
Examples:Atomic bombs, nuclear power plants, and the sun.

2. Chemical Energy - is really a form of potential energy and is the energy stored in food, gasoline or chemical bonds.
Examples: Striking a match, food, batteries.  

3.  Electrical Energy - Energy produced by electrons moving through a substance is known as electrical energy. We see evidence of electricity in household appliances, electric outlets, phone chargers, electric wires.
Examples: MP3 players, computers, video games, holiday light wires.

4. Mechanical Energy - is the energy of movement. All moving objects have mechanical energy. Examples: bicycles, machine parts, subway trains, wheels, us!
M.E. = P.E. + K.E.

5. Sound Energy- is produced when a solid, liquid or gas vibrates. Sound energy travels out as waves in all directions.
Examples: Voices, sirens, horns and musical instruments.

 6. Radiant Energy - is light energy, that when absorbed by an object, gets converted to thermal/heat energy. 
 Examples: A light bulb, the glowing coils on a toaster, the sun, and even headlights on cars. 

7. Thermal Energy - is the energy of molecular movement.  The faster the molecules move, the more thermal energy is present.  Heat is the transfer of thermal energy i.e. when thermal energy moves from object to object, we feel it as heat.

C. Generating Electricity!!!
- Electrical energy is needed in our daily lives.  Imagine what life would be like if all those appliances that you plug in on a daily basis were to disappear...   No refrigerators, no MP3s, no television, no hot water, etc.

Power plants use a generator to generate electricity.  A turbine turns the generator.  Mechanical energy is needed to turn the turbine, usually in the form of steam pushing against its blades.  Now, all we need is a source of thermal energy to boil the water into a gas.