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It's when something happens (like ice melting in the Arctic) and the result of that (less shiny reflecting ice) means that the first thing happens faster and faster. Like a loop! (The sun's heat hits more land and dark water where it is absorbed, so land and water capture more heat than the shiny ice did. This makes the atmosphere warmer, so more ice melts!)
Another example:
- Ice melts in the Arctic because we have been burning fossil fuels (coal, oil and natural gas) and adding extra carbon dioxide to the greenhouse gases in the atmosphere.
- Fossil fuel companies fight to drill for oil and gas from the seabed which used to be protected with a floating ice cover. This gas and oil is burnt, releasing MORE carbon dioxide.
- This warms the Arctic more! So more ice melts, and more companies fight for drilling rights!
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Uplift and weathering are two of the processes that shape the features of the earth how are they difference and how are they similar?
uplift-weathering hypothesis is a “proposal that chemical weathering is an active driver of climate change, rather than just a negative feedback that moderates climate". uplift-weathering hypothesis both discuss how chemical weathering is a negative feedback that moderates climate; however, the uplift hypothesis tries to say that chemical weathering is the active driver for climate change and not just a negative feedback
What is a positive feedback loop increasing carbon dioxide?
The Oceanic Solubility Pump.Oceans absorb carbon dioxide (CO2) from the atmosphere.As the oceans get warmer, they absorb LESS CO2 than before.So MORE CO2 remains in the atmosphere.So the atmosphere gets warmer.This makes the oceans warmer.So they absorb less CO2. And so on.This is a positive feedback loop which increases the levels of carbon dioxide in the atmosphere.
What attracts rain?
Near-continuous forests, such as the Congo and the Amazon attract rain. Rainforests attract water vapor, leading to rain, lower local atmospheric pressure and a feedback loop that keeps the whole system going.
How scr can control the temperature for electric hot plate?
One way is to use a microcontroller with an output pen set up with hardware PWM into the scr, the scr then controls the heating element of the hotplate. A thermistor can be added for a control feedback loop.
Why are scientists concerned that a rise in global temperature could start a feedback loop?
Greenhouse gases are trapped in the ocean and in other sinks such as peat bogs and the tundra covering large areas of northern Europe. In the same way as a warmed bottle of soft drink releases dissolved carbon dioxide when warmed, the dissolved carbon dioxide and other greenhouse gases will be released as ocean waters warm. The "ancient" greenhouse gases thus released combine with human-generated greenhouse gases, leading to further warming and more release of gases in what is known as a positive feedback loop. The positive feedback principle is, incidentally, exactly the same as when a microphone is placed too close to a loudspeaker in the same amplifier system. Any minute noise picked up by the microphone is amplified and fed back into the microphone, leading to the increasingly loud and unpleasant "scream" of the system.
Closed loop gain for feedback oscillators?
Feedback oscillators have a closed loop gain of
What is negative feedback of a closed loop system?
Negative feedback is a feedback where it is used in negative side in a closed loop system.Such as a inverting side feedback in op-amp.
What are the ratings and certificates for Feedback Loop - 2008?
Feedback Loop - 2008 is rated/received certificates of: UK:PG
Is the gain same for same system in open loop and closed loop?
A: DEFINITELY NOT Open loop is defined as no feedback. any kind of negative feedback will reduce the gain
What is the endocrine feedback loop?
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What actors and actresses appeared in Feedback Loop - 2008?
The cast of Feedback Loop - 2008 includes: Thomas Couetdic as Thomas Couetdic
Positive feedback loops are usually part of a larger?
negative feedback loop
How is a positive feedback stopped?
The positive feedback loop is terminated by the end of childbirth...
What are four conditions in the cell that must be kept in the homeostatic balance?
- temperature - negative feedback loop - positive feedback loop - water balance
What makes closed-loop op amp unstable?
A: It does not. The loop becomes unstable ONLY if there is positive feedback either voltage or phase. For a close loop to be stable negative feedback is required.
What is an adrenaline feedback loop diagram?
I'm not sure exactly what is in it [sorry, I'm too lazy :*(], but an adrenaline feedback loop diagram is, well, a diagram showing the feedback loop that adrenaline uses to signal itself to pump adrenalin through the body.
Explain the difference between 'radiative forcing' and climate feedback'?
Radiative forcing is how potent a particular term, often a greenhouse gas, is in the atmosphere. It is like turning the sun up or down a little bit, since its units are W/m2 (just like that of solar radiation).Climate feedback refers to processes in the climate system that cause a feedback loop to occur. You might have warming temperatures that melt ice, and that will lower albedo which will cause the surface to heat up even more. That is a feedback (an example of a positive feedback).
