KNOWLEDGE TESTER
Who is called the father of physics
Who is The Mother of physics
{If u get both right 2x points,
If u get 1 wrong minus 200 points}
Isaac Newton
&
Marie Curie.
Collision causes damage
Lose 100 Points
. . .
Give an example to show the conservation of potential energy to kinetic energy when put to use.
Answers may vary- Teachers desicion
If right then all other questions after this are +100 points
2X points for this one
State true or false: The object must be displaced for the work to be done.
1) truee
Who uses the most energy in the world ( 2024)
USA
Explain Sound energy
( and its SI unit for 100 points)
Sound energy is possesed by a body when a sound is produced by vibrating of an object that reaches our ear mambrane
( hertz )
Energy just destroyed you-
-200 points
womp womp
What are the various factors affecting kinetic energy?
(4) all of the above
What are some daily Uses of energy
- Answers can Vary ( Teacher decides points)
What is mechanical energy
(for 100 extra points state the 2 forms of mechanical energy)
Mechanical energy is the energy possesed by a object due to its state of rest
( Potential and Kinetic)
Explain the following
1- conservation of energy
2- Production of Hydro electricity
3- Joules
1 energy can neither be created nor destroyed. Although, it may be transformed from one form to another. In a closed system, i.e., a system that is isolated from its surroundings, the total energy of the system is conserved.
2 water flows through a pipe—also known as a penstock—and then spins the blades in a turbine, which, in turn, spins a generator that ultimately produces electricity
3 joule, the unit of work or energy in the International System of Units (SI).
The sum of kinetic energy and potential energy is ————-
i Energy Conservation Day is celebrated on _____
ii
Shafts in the windmill aid in converting mechanical energy into _____?
i-(4) December 14
ii-(3) Electrical
Name all 8 forms of energy
Mechanical, light, heat., chemical, sound ,magnetic, electrical and atomic
State the change of energy( each is 50 points)
1 Photosynthesis
2 Microphone
3 LPG
4 Photo voltaic cell
5 Biogas
6 Dry cell
7 Loudspeaker
8 Car
1 Light energy To chemical energy
2 Sound energy to electrical energy
3 chemical energy to heat energy
4 Light energy to electrical energy
5 Chemical energy to heat energy
6 chemical energy to electrical energy
7 electrical energy to sound energy
8 chemical energy to heat/mechanical energy
If u got all right then 100 extra points
If a force acting on a body causes no displacement, the work done is—————
(3) 0
3X points Question - - -
Who invented Joules
(extra question - where is joules used in our daily life for 300 points)
James Prescott Joule
For measuring Energy consumption
Why Are the different forms of energy important?
( Answers can Vary)
What is the law of conservation of energy?
[for 3x points-
The temperature of water at the top of the fall will be different from the temperature at the foot of the fall. EXPLAIN WHY OR WHY NOT?]
The energy can only be transformed from one form to another, it can neither be created nor destroyed
Explanation: The velocity of water is maximum at the foot of the fall because potential energy is converted into kinetic energy when the water falls from a height. At the bottom of the fall, the velocity is rapidly reduced to zero, and hence Its kinetic energy gets transformed into heat energy at the bottom, which raises its temperature.
If both are right ( 2000 poins )
1. The formula to find the work done is
( 2) W=Fxs