Stars, Galaxies, & the Solar System: Weekly Blog 05/20/18

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&EP-Analyzing Data:


Our solar system has 8 planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Mercury, Venus, Earth, and Mars are rocky or terrestrial planets, while Jupiter, Saturn, Uranus, and Neptune are gas giants.  I used tables to display and analyze data of different planets based on whether they are rocky or gas. (As shown above) I recognized patterns in data and see relationships between variables. For example, I observed that all gas planets are farther from the Sun, making their years longer than ours. Also, I observed that gas giants are cooler compared to Earth and Rocky planets are warmer because of their distance from the Sun. After analyzing data from multiple sources I was able to come to the following conclusions: Overall, rocky/terrestrial planets tend to be warmer than Earth. They all have longer days and shorter years. They are closer to the Sun compared to Earth. Also, their gravity is weaker compared to Earth's and they're larger. Most rocky planets do not have moons and they do not have rings. Overall, gas planets tend to be colder than Earth. They all have shorter days and longer years. They are farther away from the Sun compared to Earth. Also, their gravity is stronger compared to Earth's and they're larger. Gas planets have rings and moons. Altogether, I was able to analyze the data I collected to draw conclusions about the planets in our solar system.

XCC-Cause and Effect: While watching videos and reading articles about stars, galaxies, and the solar system, I discovered many cause and effect relationships. For instance,  planets made of gas like Jupiter, Saturn, Uranus, and Neptune, have longer years compared to Earth. The cause of this is the fact that they are farther away from the Sun, so it takes longer to make a complete revolution. Another cause and effect relationship is Mercury's varied temperature. Mercury, the planet closest to the Sun is about 450 degrees Celsius during the day and -170 degrees Celsius at night. The cause of this is that Mercury has no real atmosphere. Additionally, there is a cause and effect relationship between a comet and its "tail." As a comet nears the Sun, its temperature increases. This causes gas and dust to be released behind it. This makes it look as if it has a tail. All in all, there are many cause and effect relationships between stars, galaxies, and our solar system.

Multiplier: This week I was a mutant, to be more specific a learner because I wanted to learn as much as I could so I could perform well on the mastery quest. 

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