HP 23-24 Feedback Loops

Front

What is a Negative Feedback Loop?

Back

A process that counteracts a change by reducing the output or activity, helping to maintain stability in a system.

Front

What is a Positive Feedback Loop?

Back

A process that amplifies a change by increasing the output or activity, often leading to exponential growth or decline.

Front

Example of a Negative Feedback Loop in the human body?

Back

When blood glucose levels rise, the pancreas releases insulin to lower blood sugar levels.

Front

Example of a Positive Feedback Loop in climate change?

Back

As ice melts, less sunlight is reflected away, leading to more warming and further ice melt.

Front

What role does the pancreas play in blood sugar regulation?

Back

It releases insulin in response to high blood sugar levels, facilitating glucose uptake by cells.

Front

How does increased evaporation affect cloud formation?

Back

Increased evaporation leads to more clouds, which can reflect sunlight and potentially cool the Earth.

Front

What is albedo?

Back

The measure of how much light that hits a surface is reflected without being absorbed.

Front

How does a Positive Feedback Loop affect global temperatures?

Back

It can lead to a self-reinforcing cycle where an initial change causes further changes in the same direction.

Front

What happens during a Negative Feedback Loop in temperature regulation?

Back

An increase in temperature may trigger processes that cool the system down, restoring balance.

Front

What is the significance of feedback loops in ecological systems?

Back

They help maintain homeostasis and can influence the stability and resilience of ecosystems.