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Electronic Poster

Transcript: Earth revolves around the sun once per year, the axis of rotation points in the same direction throughout the yearly year. The heat and solar energy provides a lot of things for the earth. Nutation It is the rotation of the solid Earth around its own axis. The main results of Earth's rotation are day and night. Earth's path about the galaxy The earth moves around the galaxy in a circular path around the sun. Precession Barycenter The seasons in the Southern Hemisphere and Northern Hemisphere are detewrmined by the amount of sunlight they get. The sun's energy affect food webs on earth. References Solar energy essential to plants The sun produce energy which is transferred to the earth by radiation. photo credit Nasa / Goddard Space Flight Center / Reto Stöckli A rocking swaying or nodding motion in the axis of rotation. The seasons in the southern heimisphere opposite to those in the northern hemisphere. The suns energy affects the food web because if the sun was not here everything that is living would die out at some point Revolution of the earth around the sun Are non-rotating cordinates with origin at the center of mass of two or more bodies. -Wikipedia - - - - - - - - - Electronic Poster Explain the rotation of the Earth Energy is essential to plants because solar energy comes from the sun and the sun helps things grow like plants A change in the orientation of the rational axis of a rotating body. Earth experiences precession because it undergoes gravity.

Electronic Poster

Transcript: Why Study History? Industrialization lead to large changes in education and society. Industrialization and technology lead to urbanization which lead to development of social institutions such as charities, reform groups and governmental entities. Industrialization and urbanization lead to social division of labor, class conflict, and a need for a secondary education. (Rury,p 4-9) Cultural capitol-gaining status from knowing how to behave in certain situations Social Status -gaining status through association in a social group.. Human Capitol -- the ability of some groups to gain status through knowledge. Ideologies, such as racism and sexism, are beliefs and ideas; culture is patterns of behavior -- both affect relationship between culture and education. (rury p. 9-15) Urbanization lead to small rural schools being consolidated into larger schools. Industrialization lead to curricular differentiation. Education became an instrument to assign people to social roles. Education became a potent poltical issue. (Rury, p 17-18) In the 19th century schools were coeducational, providing boys and girls educational opportunityies. Female enrollment grew until girls outnumbered boys. Women also attended academies, high schools and colleges. These changes could have lead to first women's rights movement. After Civil War education of African Americans increased. An elite educated population could have contributed to effective challenges to racism and discrimination in 20th century. (Rury,p 19) Many people compare studying history to reading a story. One must remember that the story must be confirmed with facts gathered from the period of time being studied. New evidence will be uncovered making the ideas presented in Rury's book obsolete. Dates and names are presented not for memorizing but to help readers gain perspective. (Rury, p 21-22) Introduction: History, Social Change, and Education (Chapter 1) Angie Lakey-Campbell Educational Change: Historical Perspective Northwest Nazarene University History & Social Change The Evolution of American Education Thinking about Social Change Schools Changing Society Rury, J.L. (2005) Education and social change: Themes in the history of American schooling (3rd ed.). Mahwah, NJ: Lawrence Erlbaum Associates A Final Word About History References: We believe our time is unique Difficult to comprehend changes in present History offers perspective to understand change (Rury, p 2-4)

Moles Electronic Poster

Transcript: The Avogadro constant is named after the early nineteenth century Italian scientist Amedeo Avogadro, who is credited (1811) with being the first to realize that the volume of a gas (strictly, of an ideal gas) is proportional to the number of atoms or molecules. The French chemist Jean Baptiste Perrin in 1909 proposed naming the constant in honor of Avogadro. American chemistry textbooks picked it up in the 1930's followed by high school textbooks starting in the 1950s. Avogadro's number, the number of particles in a mole, can be experimentally determined by first "counting" the number of atoms in a smaller space and then scaling up to find the number of particles that would have a mass equal to the atomic or molecular mass in grams. A chemical mass unit, defined to be 6.022 x 1023 molecules, atoms, or some other unit. The mass of a mole is the gram formula mass of a substance. Moles allow the chemist to weigh out amounts of two substances, say iron and sulfur, such that equal numbers of atoms of iron and sulfur are obtained. Moles By: Christian Stanley Moles Electronic Poster How are moles related to volume, mass and number of atoms? Avogadro's number is a proportion that relates molar mass on an atomic scale to physical mass on a human scale. Avogadro's number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×10 23 mol -1 and is expressed as the symbol N A. What is a mole? How was the value of the mole determined? How are moles used in chemistry?

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