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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). - PowerPoint PPT Presentation
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Kinetic Jeopardy!
Kinetic Jeopardy!Energy
Convert & Conserve
Watch the Power!
Ancient Energy
Types of Energy
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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).
What are 2 ways that you can increase an object’s
Potential Energy?
By increasing the height of the object or by stretching it.
Kinetic Energy = ½ x Mass x Velocity2
Which one has the greatest KE?a) 2,000kg car going 2m/sb) 100kg person running 10m/sc) 40kg cheetah running 30m/s
Kinetic Energy = ½ x Mass x Velocity2
Which one has the greatest KE?a) 2,000kg car going 2m/s = 4,000Jb) 100kg person running 10m/s = 5,000Jc) 40kg cheetah running 30m/s = 18,000J
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Final Jeopardy
What is Energy Conversion?
Changing the form of energy (Potential energy
can be converted into Kinetic energy).
What does the Law of Conservation state?
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!
Kinetic energy is highest at point 3 and lowest at 1 and 5. Potential energy 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?
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Final Jeopardy
E = m x c2
Einstein’s theory states that the Energy (E) of an object equals its Mass (m) times the speed of
light (c) squared.
What is the definition of Power? (Not the equation)
Power is the rate at which energy is transferred or converted.
What is the ‘advanced’ formula for Power and its unit?
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 = 5,436J18s
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.
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Final Jeopardy
Which has more Power?
Power = 10N x 0.2m 2s
Power = 1W
Power = 20N x 0.5m 5s
Power = 2W
What 3 fuels are known as Fossil Fuels?
The 3 Fossil Fuels are Coal, Petroleum, and Natural Gas.
How does the Sun produce energy?
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.
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Final Jeopardy
What is Mechanical Energy?
Energy associated with motion or position of an
object.
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.
Name and describe the other 3 forms of energy.
Chemical: potential energy stored in chemical bonds (food).
Thermal: total energy in the particles of an object.
Electrical: energy stored in moving electric charges.
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Final Jeopardy
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 ____ .
603010
power 33,000 horsepower746 car steam engine
Watt horse Joule work
STOP
James Watt wanted to advertise his improved steam engine. He compared the work it could
do to that of a horse lifting 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.