Answer to Question 1
The sensory register holds virtually all the information we sense in a relatively unencoded form for a second or two (actually, less than a second for visual input and about two to three seconds for auditory input). Working memory is the component that actively processes information. It holds a small amount of information (hence has a limited capacity) for perhaps 5-20 seconds, although information can be kept there longer through the use of rehearsal. Long-term memory has a seemingly unlimited capacity and an indefinitely long duration (it may remain there quite a while, although not necessarily forever). People move new information from the sensory register to working memory by paying attention to it. They most effectively move new information from working memory to long-term memory by connecting it to the things already stored in long-term memory.
Answer to Question 2
A schema is an organized set of facts about a specific concept or phenomenon. A script is a schema that involves a predictable sequence of events related to some activity. (The student should describe a concrete example of each of these.) Schemas and scripts promote knowledge construction by enabling learners to fill in missing information in a manner consistent with how objects typically are and/or how events typically unfold.
An example of a homeostatically controlled variable: blood levels of glucose in a human.
Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye
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