Wednesday, Wednesday, November 4, 2009November 4, 2009

Mrs. Gall’s ClassesMrs. Gall’s Classes

Wednesday, Novermber Wednesday, Novermber 4, 20094, 2009

1.1. Warmup: Convert 45019 cm to meters, Warmup: Convert 45019 cm to meters, and give your answer in scientific and give your answer in scientific notation.notation.

2.2. Present: precision, accuracy, significant Present: precision, accuracy, significant figures, meniscus, scientific notation, figures, meniscus, scientific notation, endothermic, exothermic, heat, specific heat, endothermic, exothermic, heat, specific heat, energy, variable, temperature, kinetic energy energy, variable, temperature, kinetic energy (see page 65). (see page 65). Write one exam question, Write one exam question, present to the class, explain the correct present to the class, explain the correct answer.answer.

3.3. Homework: Page 61 practice #1 due Homework: Page 61 practice #1 due tomorrow.tomorrow.

Write one exam question, Write one exam question, present to the class, explain present to the class, explain

the correct answer.the correct answer.• Precision- KH -Energy- BVPrecision- KH -Energy- BV• Accuracy-TS -Variable- MNAccuracy-TS -Variable- MN• Significant figures- FJSignificant figures- FJ• Meniscus- JR -Specific Heat- AGMeniscus- JR -Specific Heat- AG• Scientific notation- RCScientific notation- RC• Exothermic- GM -Temperature- Exothermic- GM -Temperature-

DestinyWDestinyW• Endothermic- NH Endothermic- NH • Heat- CP -Kinetic Energy- Heat- CP -Kinetic Energy-

DiamondWDiamondW• Hypothesis- GALLHypothesis- GALL

Mrs. Gall’s Exam Mrs. Gall’s Exam QuestionQuestion

• A testable statement that drives the A testable statement that drives the procedure and conclusion of an procedure and conclusion of an experiment is called:experiment is called:– A. LawA. Law– B. TheoryB. Theory– C. PurposeC. Purpose– D. HypothesisD. Hypothesis– E. BenchmarkE. Benchmark

Morgan Neal’s exam Morgan Neal’s exam question:question:

• What factor can affect an What factor can affect an experiment?experiment?

• -A. Hypothesis-A. Hypothesis• -B. Theory-B. Theory• -C. Variable-C. Variable• -D. Control-D. Control• -E. None of the above-E. None of the above• *****revise – control/ variable***********revise – control/ variable******

Robert Crockett’s Exam Robert Crockett’s Exam Question:Question:

• What is 51,166 written as in What is 51,166 written as in scientific notation?scientific notation?

• Solve, show your work and circle Solve, show your work and circle your answer.your answer.

Amber Griffin’s Exam Amber Griffin’s Exam Question:Question:

• The formula for specific heat is The formula for specific heat is correctly expressed as:correctly expressed as:

• A- (g/J x K)A- (g/J x K)• B- (g/J x k)B- (g/J x k)• C- (J/G x K)C- (J/G x K)• D- (J/ g x K)D- (J/ g x K)• E- None of these E- None of these

George Moore’s Exam George Moore’s Exam Question:Question:

• What describes a process in which a What describes a process in which a system releases heat into the system releases heat into the environment:environment:

• A- endothermicA- endothermic• B- evaporationB- evaporation• C- law of conservation of energyC- law of conservation of energy• D- exothermicD- exothermic

Candace Perry’s Exam Candace Perry’s Exam QuestionQuestion

• ___?___ is energy transferred ___?___ is energy transferred between objects that are different:between objects that are different:

• A- TemperatureA- Temperature• B- Kinetic energyB- Kinetic energy• C- HeatC- Heat• D- Specific heatD- Specific heat

Kailynn Hudgens’ Exam Kailynn Hudgens’ Exam QuestionQuestion

• ________ refers to how closely several ________ refers to how closely several measurements that are the same measurements that are the same quantity and that are made in the quantity and that are made in the same way agree with one another.same way agree with one another.

• A- AccuracyA- Accuracy• B-Significant figureB-Significant figure• C-PrecisionC-Precision• D-Exact MeasurementD-Exact Measurement

Diamond Williams’ Exam Diamond Williams’ Exam QuestionQuestion

• Kinetic Energy is the energy of an Kinetic Energy is the energy of an object that is due to the objects object that is due to the objects ______.______.

• A- CirculationA- Circulation• B- HeatB- Heat• C- MotionC- Motion• D- All of the aboveD- All of the above• E- None of the above E- None of the above

Fatimoh Test QuestionFatimoh Test Question

• The ________ of a measurement or a The ________ of a measurement or a calculation consist of all the digits calculation consist of all the digits known with certainty as well as one known with certainty as well as one estimated or uncertain digit.estimated or uncertain digit.

• A- PrecisionA- Precision• B- Accuracy B- Accuracy • C- PuddingC- Pudding• D- Significant Figures D- Significant Figures

Tiara Scott’s Exam Tiara Scott’s Exam QuestionQuestion

• The _______ of a measurement is how The _______ of a measurement is how close the measurement is to the true close the measurement is to the true or actual value.or actual value.

• A-PrecisionA-Precision• B-SignificantB-Significant• C-AccuracyC-Accuracy• D-TemperatureD-Temperature

Jasmine Rowe’s Exam Jasmine Rowe’s Exam QuestonQueston

•How would you measure a How would you measure a liquid in a cylindrical liquid in a cylindrical container ?container ?

Destiny William’s Exam Destiny William’s Exam QuestionQuestion

________ is actually a measurement of the ________ is actually a measurement of the average Kinetic energy of the random average Kinetic energy of the random motion of particles in substance.motion of particles in substance.

A-KelvinA-Kelvin

B-TemperatureB-Temperature

C-HeatC-Heat

D-CelciusD-Celcius

Nicholas Hawkins Exam Nicholas Hawkins Exam QuestionsQuestions

• Which of the following is a example Which of the following is a example of an endothermic reaction?of an endothermic reaction?

• A-Sweating after a workoutA-Sweating after a workout• B-A bon fireB-A bon fire• C-baking a cakeC-baking a cake• D-Rubbing your hands togetherD-Rubbing your hands together

Brandon VanArsdale’s Brandon VanArsdale’s Exam QuestionExam Question

• How is energy transferred:How is energy transferred:• Ninja focusNinja focus• Molecules movingMolecules moving• Matter disappearingMatter disappearing• SolventsSolvents

Wednesday, November 4, Wednesday, November 4, 20092009

1.1. Warmup:Warmup: If you were a local business If you were a local business owner judging our school’s science owner judging our school’s science fair, what would you look for in an fair, what would you look for in an award- winning project? Imagine that award- winning project? Imagine that you own any business of your choice. you own any business of your choice.

2.2. Lab page 502:Lab page 502: waves, diffusion. waves, diffusion. Prelab and safety talk, perform lab; Prelab and safety talk, perform lab; observations and observations and answers to answers to questions due in writing tomorrowquestions due in writing tomorrow..

Page 502: Page 502: Observing Waves in a Observing Waves in a

MediumMedium• Procedure #3: Observe and Procedure #3: Observe and

RECORD how the waves and the RECORD how the waves and the food coloring move:food coloring move:

• Waves moved in lines, and color Waves moved in lines, and color spread out from the centerspread out from the center. (10 pts. . (10 pts. For word notes)For word notes)

Pg. 502 labPg. 502 lab

• 1. Compare the movement of the 1. Compare the movement of the waves with the movement of the food waves with the movement of the food coloring.coloring.

• The waves moved back and forth in The waves moved back and forth in squiggly lines (not circles). The color squiggly lines (not circles). The color moved moved toward the rulertoward the ruler and spread and spread from the center; some of the color from the center; some of the color stayed near where it was first dropped. stayed near where it was first dropped. Eventually the color was spread evenly Eventually the color was spread evenly through all of the water. (20 points)through all of the water. (20 points)

Pg. 502 labPg. 502 lab

• 2. Generate one or more hypotheses 2. Generate one or more hypotheses to explain the observed motion of to explain the observed motion of the food coloring.the food coloring.

• (30 pts. For a well- thought answer)(30 pts. For a well- thought answer)

LAB QUIZ (70 POINTS)LAB QUIZ (70 POINTS)

1.1. The lab is called: Observing Waves in A The lab is called: Observing Waves in A MEDIUM- What is the “medium” in MEDIUM- What is the “medium” in this lab? (guess if you don’t know)this lab? (guess if you don’t know)

2.2. Give an example of any OTHER medium Give an example of any OTHER medium that waves might travel through.that waves might travel through.

3.3. Would the waves be the same if you Would the waves be the same if you dipped a single finger in the water dipped a single finger in the water (point source) instead of a straight (point source) instead of a straight ruler?ruler?

4.4. What is a wave?What is a wave?

Homework due now for Homework due now for 10 pts. ec10 pts. ec

• Pg. 459 #1-7Pg. 459 #1-7• Pg. 466#1-3Pg. 466#1-3• Pg. 469#1-22Pg. 469#1-22• 64 pts. Plus 10 pts. Extra credit 64 pts. Plus 10 pts. Extra credit

if turned in today.if turned in today.