Show:
Work & Power
Random
Types of Energy/Fission & Fusion
Conservation of Energy
Energy Vocab
100
This is defined as the amount of force applied to an object over a certain amount of distance.
What is work?
100
In which of the following situations is work being done? A). The wind blew a chair across the yard. B). I pushed a heavy box, but it didn't move. C). You ran down the street. D). I threw a football down the field. E). Coach Eaton held a heavy barbell above his head.
What are situations A, C, and D. (When the force and motion are going in the same direction.)
100
The nuclear power used for electricity is produced by what type of reaction?
What is a fission reaction?
100
What is the Law of Conservation of Energy?
Energy cannot be created or destroyed, it can only change forms.
100
This is the type of energy that is due to motion.
What is Kinetic Energy?
200
Lifting a car using a car jack is easier because it requires:
a. less force
b. less work
c. less time
d. none of the above
a. less force
200
What do both fusion and fission reactions have in common?
They both produce energy.
200
What does nuclear fission start with, and what are the three products of a fission reaction?
What is Uranium-235 --> Kr + Ba + 3 neutrons & energy.
200
Increasing the speed of an object has what affect on the objects potential energy?
What is none.
200
Energy of an object due to its position, shape or condition.
What is potential energy?
300
How much work is being done as a power lifter lifts a 15 kg bar 5 meters off the ground with a force of 147 N?
What is 735 Newtons?
300
Which of the following best describes the TOTAL amount of energy in the universe? A. It is always increasing B. It only changes when there is a nuclear reaction C. It remains constant D. It is always decreasing
C. It remains constant. (Due to the Law of Conservation of Energy)
300
Gravitational potential energy depends on what three things?
What are the mass of the object, the object's height from the ground, and the acceleration due to gravity.
300
At the top of its arc, a thrown ball has (maximum/minimum/zero) potential energy.
What is maximum.
300
This type of energy is the sum of an object's kinetic and potential energies.
What is Mechanical Energy?
400
A man pushes on a parked car with a force of 200 N. The car does not move. How much work has the man done on the car?
What is none/zero?
400
What affect does increasing the speed of an object have on the objects potential energy?
What is NO affect....(Speed - or velocity - doesn't affect GPE because GPE = M*G*H).
400
The primary source of the sun's energy is _________.
What is nuclear fusion
400
As a hamster runs and turns a wheel, ___________ energy is being converted into ____________ energy.
What is chemical energy into kinetic energy?
400
The SI unit for both Work and Energy.
What is the Joule?
500
A wind with a force of 50 N blows a 80 kg chair across the front yard for a distance of 10 meters. How much work is being done?
What is 500 Newtons?
500
The diagram on the white board shows a person swinging a golf club from point A to point D. At which point is the kinetic energy of the golf club the greatest, and at which point is the potential energy the greatest?
KE = Greatest at point C PE = Greatest at point A
500
The kind of energy associated with the making and breaking of atomic bonds is ____________.
What is chemical energy
500
Photosynthesis is the process that transforms _________ energy into ___________ energy in plants.
What is light energy into chemical energy.
500
The energy stored in any type of stretched or compressed elastic material, such as a spring or bungee cord.
What is elastic potential energy?