Weekly Blog: 5/16-5/20

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Cladograms, cladograms, cladograms 10/22/17

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Image: Pierre Kleinhouse Summary:  When we think of evolution we see monkeys magically turning into humans, but what is missing from that picture is the portion below it that makes it a cladogram. What is a cladogram? A cladogram is a diagram that shows the common characteristics of certain animals, as well as how closely related they may be. The top of the cladogram includes the organisms name and sometimes a picture. On the side of the cladogram, you will usually see different characteristics. Since a cladogram is drawn at a downward angle, the characteristic applies to everything above that point on the diagram. As you go up the cladogram, the animal at the top has all the characteristics listed throughout the cladogram. Along with this, the points in which two animals meet is not when they evolved from one another, but their common ancestor. Lastly, the diagonal line of a cladogram represents time. S&EP-Models: SliderBase Cladograms are a diagram or model th...
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Elements, Compounds, and Mixtures: 4/2/17

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Image: Google Sites Summary: A pure substance is a sample of matter that has definite chemical properties. An element is a pure substance that cannot be separated. A compound is two or more different pure substances that are joined by chemical bonds. A mixture is two or more pure substances that are not chemically bonded. A heterogenous mixture is the least mixed mixture and is the easiest to take apart. An example or way to visualize this would be a salad. A homogeneous mixture, also known as a solution, can be separated by physical means. It appears the same throughout and is well mixed. A solution could be toothpaste or milk.  A colloid is when the particles are not dissolved, but they are mixed. Dissolving is not a chemical change. Fun fact, all living this are mixtures. S&EP- Conducting Investigations: We were transported to a castle built my the scientist Dmitri Mendeleev and we needed to get out. Each room was made of a different element in the periodic table....
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Stars, Galaxies, & the Solar System: Weekly Blog 05/20/18

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Image: AAS Nova Summary: Gravity is the universal force that holds our galaxy together. There are three kinds of galaxies, spiral, elliptical and irregular. A spiral galaxy has a twisting or winding shape, whereas elliptical galaxies look mostly like circles. As for irregular galaxies, they have indistinct shapes which is why they are recognized as irregular. The Milky Way is a spiral galaxy in which the Earth is located in. Fun fact, elliptical galaxies mostly contain older stars. During nuclear fusion, four hydrogen atoms fuse into one helium atom, making hydrogen the most common chemical element in stars. You can see stars during nighttime because of the light they produce during nuclear fusion. The size of a star controls what happens to it for the rest of its life. Inside the Milky Way, the most common types of stars are main-sequence stars. Also, stars range in different temperatures, blue being the hottest and red being the coolest. S...
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