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Work, Power and Energy Review • Each table will work as a team to earn points by answering questions. • There will be 60 seconds to answer each question from the time I am done reading unless otherwise noted. • Answers will be recorded and presented on the whiteboards at each team table. • Correct answers will earn the points denoted by the question. Incorrect answers will not be penalized. • The choice of category and question will rotate among teams. • At Final Jeopardy, each time may wager all of their earned points, or $1000, whichever is greater. • The winning team will earn 1 point of extra credit each on tomorrow’s test.

Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

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Page 1: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

Work, Power and Energy Review

• Each table will work as a team to earn points by answering questions.

• There will be 60 seconds to answer each question from the time I am done reading unless otherwise noted.

• Answers will be recorded and presented on the whiteboards at each team table.

• Correct answers will earn the points denoted by the question. Incorrect answers will not be penalized.

• The choice of category and question will rotate among teams. • At Final Jeopardy, each time may wager all of their earned

points, or $1000, whichever is greater.• The winning team will earn 1 point of extra credit each on

tomorrow’s test.

Page 2: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

Strategy

• Work together with your team.• Talk quietly but discuss possible options.

Make sure to write down your solution before time runs out.

• After each question and answer we will have time to discuss and answer questions.

Page 3: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

Work, Power and Energy

Energy Conservation of Energy

Work Power Potpourri

Q $100

Q $200

Q $300

Q $400

Q $500

Q $100 Q $100Q $100 Q $100

Q $200 Q $200 Q $200 Q $200

Q $300 Q $300 Q $300 Q $300

Q $400 Q $400 Q $400 Q $400

Q $500 Q $500 Q $500 Q $500

Final Jeopardy: Units

Page 4: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$100 Question from Energy

• ___________ is the energy of an object in motion

Page 5: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$100 Answer from Energy

• Kinetic energy

Page 6: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$200 Question from Energy

• Pulling back a rubber band is a form of storing __________ energy

Page 7: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$200 Answer from Energy

• Potential

Page 8: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$300 Question from Energy

• Energy is a measure of an object’s _________________

Page 9: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$300 Answer from Energy

• Ability to cause change

Page 10: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$400 Question from Energy

• What is the kinetic energy of a 15 kg boulder resting at the top of a 12 m cliff?

Page 11: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$400 Answer from Energy

• 0 J (Not moving = no kinetic energy)

Page 12: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$500 Question from Energy

• What is the potential energy of a 15 kg boulder resting at the top of a 12 m cliff?

Page 13: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$500 Answer from Energy

• 1764 J

Page 14: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$100 Question from Conservation of Energy

• When a ball is thrown directly upward, which of the following is true?A. Its kinetic energy is mostly converted to

potential energy.

B. Its potential energy is mostly converted to kinetic energy.

C. Its kinetic energy is mostly converted to heat.

Page 15: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$100 Answer from Conservation of Energy

• A. Its kinetic energy is mostly converted to potential energy.

Page 16: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$200 Question from Conservation of Energy

• If energy can be neither created nor destroyed, what do we mean when we say “Don’t waste energy!”

Page 17: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$200 Answer from Conservation of Energy

• Don’t convert energy into less useful forms, like heat.

Page 18: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$300 Question from Conservation of Energy

• When a car rolls down a hill, most of its potential energy converts to kinetic energy. Where does most of the rest of it go?

Page 19: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$300 Answer from Conservation of Energy

• Heat (from friction)

Page 20: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$400 Question from Conservation of Energy

• A 2 kg object sits at the top of a 10 m hill. How fast will it be rolling at the bottom of the hill?

Page 21: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$400 Answer from Conservation of Energy

• 14 m/s

Page 22: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$500 Question from Conservation of Energy

• An object starting with 20 J of potential energy rolls down a hill. At the bottom, 7/8 of the potential energy has been converted to kinetic energy. How much energy (in Joules) was “lost” due to friction?

Page 23: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$500 Answer from Conservation of Energy

• 2.5 J

Page 24: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$100 Question from Work

• Work is a measure of _____________

Page 25: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$100 Answer from Work

• How much energy is transferred.

Page 26: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$200 Question from Work

• One unit for work is a Joule. A Joule is equivalent to a _______________

Page 27: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$200 Answer from Work

• Newton-meter [N-m]

Page 28: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$300 Question from Work

• How much work is done if a 20 N force is used to slide a box 4 meters?

Page 29: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$300 Answer from Work

• 80 J

Page 30: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$400 Question from Work

• How much work is done if Mr. Richter pushes against a boulder with 200 N of force for 5 seconds but the boulder doesn’t move?

Page 31: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$400 Answer from Work

• 0 J

Page 32: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$500 Question from Work

• How much work is done to lift a 40 kg barbell to a height of 2 m?

Page 33: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$500 Answer from Work

• 784 J

Page 34: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

Daily Double!

• You have 30 seconds to submit your wagers.

Page 35: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$100 Question from Power

• Which of the following is not a definition of power?

A. The rate of energy transfer

B. How many Joules are converted to other forms of energy

C. The rate at which work is done

D. How quickly energy is converted

Page 36: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$100 Answer from Power

• B. How many Joules are converted to other forms of energy (this is a definition of work)

Page 37: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$200 Question from Power

• Which is more powerful, a student that runs up the stairs or a student that walks? Assume they have equal mass.

Page 38: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$200 Answer from Power

• A student that runs. Same work, less time.

Page 39: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$300 Question from Power

• Calculate the power of a machine that can do 2400 J of work in 8 seconds.

Page 40: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$300 Answer from Power

• 300 W

Page 41: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$400 Question from Power

• How much energy does a 1500 W microwave use if it is on for 40 seconds?

Page 42: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$400 Answer from Power

• 60,000 J

Page 43: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$500 Question from Power

• How powerful is a weight lifter who lifts a 400N weight 2 m in 1.6 seconds?

Page 44: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$500 Answer from Power

• 500 W

Page 45: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$100 Question from Potpourri

• Which force does the most work?

Page 46: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$100 Answer from Potpourri

• C

Page 47: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$200 Question from Potpourri

• Work has the same units as what other quantity?

Page 48: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$200 Answer from Potpourri

• Energy

Page 49: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$300 Question from Potpourri

• Complete the sentence:

Energy can never be created or destroyed, just __________

Page 50: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$300 Answer from Potpourri

• Energy can never be created or destroyed, just converted from one form to another.

Page 51: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$400 Question from Potpourri

• A 1000 kg car and an 1200 kg car roll down a hill. Assuming energy is conserved, which car, if either, will be rolling faster at the bottom of the hill?

Page 52: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$400 Answer from Potpourri

• Neither. Gravity accelerates all objects the same regardless of mass.

Page 53: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$500 Question from Potpourri

• An ice skater is gliding across the ice at a constant speed. Is she doing work?

Page 54: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

$500 Answer from Potpourri

• No. No acceleration means no force. No force means no work.

Page 55: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

Final Jeopardy:• Like all objects, humans need energy to

cause change. What unit do humans most often use to describe their own changes in energy?

Page 56: Work, Power and Energy Review Each table will work as a team to earn points by answering questions. There will be 60 seconds to answer each question from

Final Jeopardy Answer• The Calorie (= 4,187 Joules)


Chapter 7 Review. You will work in teams of 3 to compete in this game. Each team will be given a Whiteboard! When each question is posted, you will

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