Whats the difference between positive and negative feedback? what are some examples?

Well positive feedback are like compliments after you have done something like mabye art work, or an essay. Negative feedback would mean that the person you shared your art work or essay with only had negative things to say. I hope that helped. : )

a positive feedback is that in which u answer the question in the perfectly and the negetive feedback is that in which u dont answer the question  but also make foolish sentence

Negative feedback is when the output of a process is sampled and a part of it is subtracted from input before it is processed.  Positive feedback is the output added back into the input.  Negative feedback systems are often found in electronic amplifiers and in mechanical systems like active suspension systems.  The negative feedback permits the system to behave stablely and not go into oscillation.

An example of positive feedback is the feedback sound you hear when a microphone wanders too closely with a speaker.

I take it your talking from a ecological point of view? Positive feedback is when a system is enhanced by a particular event. Such as higher CO2 levels and higher mean temperatures. Negative feedback is when a system is retarded by a certain input. Such as higher temperatures slowing the  gulf stream ocean currents allowing cold air from northern hemisphere to move further south and cooling temps.

Positive feed back in psychology=
Praising a child for a job well done or rewarding them somehow. Negative= Spanking them

Scientific feed backs are lack of certain vitamins can cause certain cells to not operate positively. Or something like that lol. Science was never my best subject. Wikipedia or Encarta are really great sources for questions like yours. Good luck.

well you are posting in earth and geology so i am going to try to make this answer as pertaining to such.

Positive feedback is the greater result by something given positively.

Negative feedback is the lesser result of something given negatively.  

An example of of positive feedback:

You have a pot with soil and a seed you have buried in it.  Every morning of every day you have taken the time to water this seed and give it proper sunlight and shade. The result is a budding plant a month later.  

An example of negative feedback:

You have this plant with a budding flower on it that you would like to bloom and had been watering from seed.  You decide to go on vacation and in the excitement forget to leave instructions with friends or family to take care of the plant.  It goes for a week without proper sunlight/shade and no water.  When you return the budding flower is dead; dried up.  

Hope this helps.

Positive feedback feeds your ego. Negative feedback makes you face reality.



Or....something like that..........I think..........but......maybe . OK?

Positive feedback is when a process occurs and that strengthens the  factors that causes it so accelerates the process.
eg. when the sun shines it melts the ice. the ice reflects sunlight cooling the planet  so when its melted there is less light reflected so it gets warmer and more ice melts and it gets warmer again.
Negative feedback is where a process does the opposite, it results in the system slowing down and even reversing.
eg. the sun shines and evaporates water making clouds reflecting sun light which cools the planet and less light gets through