Bailie Kroll- Science Methods

     Week 9: Earth's Timeline Learning in Lab : This week during lab we looked at the timeline of significant events that happened throughout Earth's existence. We started by hypothesizing five events, creation of the moon, dinosaurs roaming the Earth, first land plants, first land animals, human existence. We placed our hypothesis on the scaled timeline of Earth's existence to launch our lesson for the day. Then, each table was given a time period to look at significant events from Earth's beginning to today. I learned that 4.65 billion years ago Earth was formed and it was not until 4.3 billion years ago that the first water evidence existed. 4 BYA, was the Archean Eon, or the formation of Earth's crust. 3.5 BYA, microorganisms formed and then 2.5 BYA oxidation of the Earth began. 2.25 BYA the Ice Age occurred and Earth became a snow ball. 1.5 BYA land started to come together and 900 million years ago, Pangea, the super continent, formed. 750 MYA glaciers formed ...

    Week 8: Timeline of Our Universe Learning in Lab : This week during lab we listened to six different presentations that cover the timeline of our universe. We started with the origin of the universe, which was my presentation, and we described that our universe was created at one single point called the Big Bang. During the Big Bang, Cosmic Microwave Background Radiation was left behind and protons and electrons combined to from hydrogen atoms. We understand today that space is continuously expanding. Then, we learned about the lifecycle of stars as they go from a nebula to a protostar, to the main sequence and transition into either a high mass or low mass star. Our sun is considered a low mass star. The more mass something has, the greater gravitational pull they have. Then, we learned about galaxies and how there are billions of galaxies out in space. Galaxies have several different shapes such as spiral, elliptical, and irregular. Our galaxy is spiral and our sun is pl...

     Week 7: A Scaled Universe Learning in Lab : This week during lab we started with the question, if you look into the sky at 12:00pm and see a full moon, why might this be shocking? We drew a diagram of the Earth and positioned the sun and moon to make this statement correct. In my drawing, I drew myself in the Northern Hemisphere and the sun is slightly to the right of my position on the Earth. To make a full moon, the moons orbit would have to be on the southeast side of the Earth to reflect the sunlight to for a full moon. Then, we did a discovery activity where we created a scaled version of the sun and the four closest planets: Mercury, Venus, Earth, and Mars. We used a website to accurately scale the size of the planets diameter and their distance from the sun. It was shocking to see the difference in size of the sun compared to each of the planets. After figuring out our scale, we created planets out of playdoh and measured out 80 meters. Mars was 80 meters away...

    Week 6: Intro to Earth Science Initial Thoughts : 1. How do the phases of the moon occur? I think that the phases of the moon occur because the Earth is orbiting the sun constantly, as the Earth orbits it block part of the sun from shining on the moon. When the Earth covers more of the sun, then there is a smaller part of the moon showing at night, but when the Earth covers less of the sun or none at all, it is a full moon.  2. What causes the seasons? The sun is closer to either the Northern Hemisphere or the Southern Hemisphere. In the summer we are closer to the sun in the Northern Hemisphere so it is hotter, whereas in the winter we are further away from the sun so the weather is colder.  3. what causes a lunar eclipse?  I think a lunar eclipse is when the moon goes in front of the sun? Learning in Lab : This week during lab we did hands on discovery over each of these questions. We used a lightbulb, and two balls to see what position the Earth and moon ...