Tutor profile: Cindy M.
Subject: Study Skills
What is the study cycle and why is it essential for college learning success?
The study cycle is a model by which students view their learning as an ongoing process, both inside and out of the classroom. The cycle starts with Previewing for today's class by reviewing previous notes and skimming the chapter or powerpoints for today. Then you must Attend class and be an active, engaged learner (take notes!) Step 3 is to Review those notes as soon as possible after class (identify tricky terms/concepts, and look for connection between class and textbook). The 4th step is to Study, which must be a SPECIFIC process, and should happen in several shorter sessions instead of a single extended session. Finally, the last step is to Assess your learning. This should be happening throughout the cycle, but especially when finished- a practice test or interactive session with a classmate or tutor will optimize your assessment of what you REALLY know and what you need more time to study.
Subject: Environmental Science
Explain the first law of Thermodynamics, and demonstrate why it is important for our understanding of resource use, allocation, and disposal.
Matter can neither be created nor destroyed, but merely changes form. That means, in our Earth system, we never get more or less of any given element- but those fundamental elements are constantly undergoing changes in response to environmental changes. For example, living creatures which are made mostly of carbon, will decompose and return that carbon (along with ALL of their constituent elements) into the Earth system with the help of decomposers. Their cellular matter never goes away, it just gets recycled into the ecosystem.
What is the difference between a positive feedback loop and a negative feedback loop, and which is more common in biological systems?
Positive feedback loops increase or amplify a biological system by using the output to perpetuate the process (for example- childbirth... the process gets more and more intense). A Negative feedback loop works to decrease or reverse the system's input, such as sweating to alleviate an elevated body temperature, to bring it back to normal. Negative feedback loops are more common in biological systems because they help us maintain Homeostasis (equilibrium) for things like blood sugar, blood pressure, and even body weight.
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