Earth Science
Professor Light
Chapter 1: Research Assignment
Chapter 1: Research Assignment
1.) According to contemporary astronomers, what is the chronological evolution of the universe from its moment of inception at the Big Bang to the formation of the Earth?
Answer:
When we look into outer-space today we see billions upon billions of stars the cover the “universe”, but what may have crossed your mind is how did they get there? Well before, these stars were there it was said that the universe was a very hot, small, and dense with no stars, atoms, forms “singularity”. The way that the universe became what we see today is what scientist calls “The Big Bang Theory” not to get confused with the show. Scientist base the Big Bang theory on many different factors/observations. The most important is the “redshift” of very far away galaxies. Redshift is the doppler reaction that occurs in light. When an object moves away from earth, it looks reddish because the movement stretches the wavelength. The reddish color occurs because; red is the lowest wavelength on the visible. The more redshift there is, the faster the object is moving away. By measuring the redshift, scientists proved that the universe is expanding and can even work out how fast the object is moving. Basically, what happened is that “space” became expanding very quickly about fourteen billion years ago, and which resulted in the formation of atoms, which eventually led to the creation of stars and galaxies. Space as we know it was created, and is still expanding at a very rapid rate while becoming much cooler.
2.) What is the evolution of Earth’s atmosphere? In particular, what has happened to the oxygen levels over the Earth’s 4.6 billion year history?
Answer:
“Breathe in all the positivity, and breathe out all the negativity”, these are some words I say when I’m going through anything that is stressful in life. The process of breathing for has become so second nature,