User:Rifasj123/sandbox: Difference between revisions
Solutions |
No edit summary |
||
| Line 1: | Line 1: | ||
{{User sandbox}} |
{{User sandbox}} |
||
<!-- EDIT BELOW THIS LINE --> |
<!-- EDIT BELOW THIS LINE --> |
||
This is a sandbox. |
|||
Interested in: |
|||
==Environmental Science Resources== |
|||
Index of refraction |
|||
http://www.ed.gov.nl.ca/edu/k12/curriculum/documents/science/highschool/ES3205_student_text_chapter_1.pdf |
|||
Snell's law |
|||
https://sites.google.com/a/edtools.psd401.net/millsj/ap-environmental-science/APES-Labs-1 |
|||
Huygens Fresnel principle |
|||
http://www.smrhs.org/page.cfm?p=554 |
|||
Phase velocity |
|||
Newton's laws of motion |
|||
Polonium Hydride |
|||
Covalent bonding |
|||
==Frontal Lobe== |
|||
Solutions |
|||
The frontal lobe is an area of the brain located at the front of each cerebral hemisphere behind the forehead, positioned anterior to the central fissure or sulcus (and thus the temporal and parietal lobes). They play a critical role in the planning and execution of movements and actions. |
|||
Periodic trends |
|||
=Articles in progress= |
|||
===Anatomy=== |
|||
| ⚫ | |||
There are two major boundaries in the brain that define the frontal lobe; the central sulcus is to the posterior between the anterior central gyrus and the posterior central gyrus, while the lateral (sylvian) sulcus is to the inferior of the lobe. These fissures separate it from the temporal and parietal lobes. |
|||
===Functions=== |
|||
The frontal lobe is very involved in planning, memory search, motor control, speech control, reasoning, and emotions. It is also believed to have a very important role in the development of an individual's personality and behavior. |
|||
A story that has reached the status of legend among neuroscientists is that of Phineas P. Gage, a worker who experienced a metal rod tearing through his left cheek bone and out of the top of his skull, destroying a substantial amount of his frontal lobe. This apparently caused a dramatic change in his temperament from someone described by others as "dependable, industrious, and well liked" to "restless, loud, profane, and impulsive." It illustrates the frontal lobes as major players in determining personality, normal social behavior, and inhibition. |
|||
Nevertheless, it can be generally divided into five central cortices, namely the prefrontal, orbitofrontal, primary motor, premotor, and insular, though there are many more cortices that play essential roles in the functions of the frontal lobe. Furthermore, the |
|||
====Prefrontal Cortex==== |
|||
The prefrontal cortex is crucial for the performance of almost all activities that require critical and intelligent thinking. It tends to be larger in primates than in other mammals, especially large in humans, its size being directly correlated with a higher level of mental planning and performance in different animals. |
|||
Most mammals operate mostly on instinct and don’t live in complexly differentiated social groups. Primates, on the other hand, have complex social hierarchies that affect gender, as well as many other social phenomena. Humans build tools, effectively modify their environments, and have specific relationships with up to hundreds of other individuals. These skills, as well as many others, are only some of the many that are specifically orchestrated in this region of the brain. |
|||
====Orbitofrontal Cortex==== |
|||
The orbitofrontal cortex is in the anterior and medial part of the prefrontal cortex. It is essential for a comprehension of risk and reward assessment and for moral judgment. Patients with damage to this area may have normal or superior intelligence as assessed by IQ tests but may be lacking a rudimentary understanding of manners or appropriate behavior in particular social contexts; they also lose almost all risk aversion despite clear knowledge of bad consequences. |
|||
====Primary Motor Cortex==== |
|||
The primary motor cortex is the strip of brain area just anterior to the central sulcus, the most posterior portion of the frontal lobe. The brain can take direct control of the muscles from the spinal cord through projections from the primary motor cortex. Neurons in the primary motor cortex travel down the spinal cord and synapse on the same motor neurons that mediate reflexes. In theory, this direct control allows far more flexibility and adaptability. |
|||
====Premotor Cortex==== |
|||
The premotor cortex monitors sequences of movement, using sensory feedback. After the basal ganglia and prefrontal cortex select the goal, the premotor cortex coordinates the steps to reach that goal. Activity in the premotor cortex helps you learn what to pay attention to while you perform a complicated motor sequence and what to do when you get stuck at some particular point. |
|||
===Insular Cortex=== |
|||
Text |
|||
| ⚫ | |||
{{About|chemical solutions}} |
{{About|chemical solutions}} |
||
| Line 49: | Line 26: | ||
They can be differentiated from suspensions based on the size of the solutes, and ultimately the nature of the mixture (being either homogeneous or heterogenous). |
They can be differentiated from suspensions based on the size of the solutes, and ultimately the nature of the mixture (being either homogeneous or heterogenous). |
||
==Components== |
|||
===Solutes=== |
|||
===Solvents=== |
|||
==Formation Dynamics== |
|||
==Solubility== |
|||
==Colligative Properties== |
|||
http://preparatorychemistry.com/Bishop_Book_15_eBook.pdf |
http://preparatorychemistry.com/Bishop_Book_15_eBook.pdf |
||
Revision as of 00:49, 16 June 2013
Interested in: Index of refraction Snell's law Huygens Fresnel principle Phase velocity Newton's laws of motion Polonium Hydride
Covalent bonding Solutions Periodic trends
Articles in progress
Chemical Solutions
In physical chemistry, a solution is a single-phase homogeneous mixture composed of two or more components. Generally, the majority component (in terms of concentration) is referred to as the solvent, while the minority as the solute, although there is no fundamental distinction between the two. Furthermore, there can be more than one solute in a given solution.
While solutions are generally thought of as existent only in a liquid phase, they can be present in many different phases. For example, our atmosphere is an example of a solution with gaseous components. Solid solutions are additionally incredibly common in the form of most natural minerals and numerous alloys. Moreover, solutions with a liquid solute and solvent are also possible; if oil and water are mixed together, though they may displace in different areas of the container due to their respective densities, the components still have a slight tendency to dissolve in each other. Nevertheless, solutions with solid solutes and a liquid solvent are most frequently encountered.
They can be differentiated from suspensions based on the size of the solutes, and ultimately the nature of the mixture (being either homogeneous or heterogenous).
http://preparatorychemistry.com/Bishop_Book_15_eBook.pdf http://www.markrosengarten.com/files/Download/unit_10_solutions_ae.pdf http://en.wikipedia.org/wiki/Suspension_(chemistry)