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Kinetic Jeopardy !. Kinetic Jeopardy !. Define Energy and what is its unit?. Energy is the ability to do Work, measured in Joules. What are the 2 kinds of energy? Define them. Kinetic energy (the energy of motion) and Potential energy (stored energy).
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Kinetic energy (the energy of motion) and Potentialenergy (stored energy).
What are 2 ways that you can increase an object’s Potential Energy?
Kinetic Energy = ½ x Mass x Velocity2 Which one has the greatest KE? 2,000kg car going 2m/s 100kg person running 10m/s 40kg cheetah running 30m/s
Kinetic Energy = ½ x Mass x Velocity2 Which one has the greatest KE? 2,000kg car going 2m/s = 4,000J 100kg person running 10m/s = 5,000J 40kg cheetah running 30m/s = 18,000J Back to Menu Final Jeopardy
Changing the form of energy (Potential energy can be converted into Kinetic energy).
The Law of Conservation states that energy can not be created or destroyed.
Explain where the Kinetic energy and potential energy are both at their highest and lowest in the diagram. DAILY DOUBLE!
Kineticenergy is highest at point 3 and lowest at 1 and 5. Potentialenergy is highest at points 1 and 5 and lowest .
Albert Einstein’s theory of relativity states that energy and matter are related. What is the formula he used to express this idea?
E = mxc2 Einstein’s theory states that the Energy (E) of an object equals its Mass (m) times the speed of light (c) squared. Back to Menu Final Jeopardy
Poweris the rate at which energy is transferred or converted.
Power = Force x Distance Time Power is measured in Watts.
A tow truck uses 5,436 Joules to lift a car over 18 seconds. What is the Power of the tow truck?
Power = Work Time Power = 5,436J 18s Power = 302W
Which has more Power? A drill that can put a 10N nail 0.2m into a block of wood in 2 seconds. A hammer that can put a 20N nail 0.5m into wood in 5 seconds.
Which has more Power? Power = 10N x 0.2m 2s Power = 1W Power = 20N x 0.5m 5s Power = 2W Back to Menu Final Jeopardy
The Sun produces energy through Nuclear Fusion by fusing 2 Hydrogen atoms together.
Explain how Fossil Fuels contain energy that came from the Sun.
Fossil Fuels come from once-living organisms (plants & animals) who lived off energy created by the Sun.
Pennsylvania has a large amount of a certain fossil fuel. What does that tell you about its prehistoric climate?
PA produces 50 million tons of coal a year! Coal comes from plants buried in swamps over millions of years. PA used to have a swamp-like environment. Back to Menu Final Jeopardy
What is one way Nuclear Energy can be released? 5 Point Bonus:What is the second way?
Nuclear Energy can be released through Nuclear Fusion (Sun) or Nuclear Fission (atomic bomb).
What form of energy travels in waves? What type of heat transfer is this?
Electromagnetic energy. This type of heat transfer is called Radiation.
Chemical:potential energy stored in chemical bonds (food). Thermal:total energy in the particles of an object. Electrical: energy stored in moving electric charges. Back to Menu Final Jeopardy
60 30 10 James _____ wanted to advertise his improved __________ . He compared the _____ it could do to that of a _____ lifting a ________ pound weight a certain distance in a certain time. One __________ is equal to _______ watts. This unit is used to describe the _____ of ____ . • power 33,000 horsepower • car steam engine • Watt horse Joule work
James Wattwanted to advertise his improved steamengine. He compared the work it could do to that of a horselifting a 33,000 pound weight a certain distance in a certain time. One horsepower is equal to 746 watts. This unit is used to describe the power of car.