1. I learned about Muscovite in Journey to the Center of the Earth. It is super thin rock that breaks easily. I also learned that magnesium is very flammable and that humans can't survive in over 130 degrees Fahrenheit
2. Three things that were scientifically untrue were that dinosaurs are completely extinct, there isn't another world at the center of the Earth, and I'm pretty sure there is no such thing as a glowing bird.
Thursday, December 17, 2009
Tuesday, December 15, 2009
Blog Post #5
1. My favorite topic we learned about this year in earth science was astronomy.
2. In this topic I learned about space and the planets. I learned about the terrestrial planets and Jovian planets. The terrestrial planets are Mercury, Venus, Earth, and Mars. The Jovian planets are Jupiter, Uranus, Saturn, Neptune, and Pluto. I also learned about black holes. (which was my topic to research and explain to the class) This was interesting to me because I learned a lot about black holes i did not know before. For example, I learned that the reason black holes have so much gravity is because it is smaller, not because it was more massive. I also learned that the only way for a star to become a black hole is if it is 3 times larger than our sun. (So our sun may never become a black hole.) Astronomy was a very interesting topic to learn about. (:
3. I found it interesting because I learned about stuff I had never even thought about before. I got to understand how the universe works. It was also interesting because Mr. Dunn made it fun! Unlike other teachers in the past (:
2. In this topic I learned about space and the planets. I learned about the terrestrial planets and Jovian planets. The terrestrial planets are Mercury, Venus, Earth, and Mars. The Jovian planets are Jupiter, Uranus, Saturn, Neptune, and Pluto. I also learned about black holes. (which was my topic to research and explain to the class) This was interesting to me because I learned a lot about black holes i did not know before. For example, I learned that the reason black holes have so much gravity is because it is smaller, not because it was more massive. I also learned that the only way for a star to become a black hole is if it is 3 times larger than our sun. (So our sun may never become a black hole.) Astronomy was a very interesting topic to learn about. (:3. I found it interesting because I learned about stuff I had never even thought about before. I got to understand how the universe works. It was also interesting because Mr. Dunn made it fun! Unlike other teachers in the past (:
Monday, December 7, 2009
Blog post #4
I think that before the "big bang" happened there was nothing in our universe. Before it happened it was too cold for any stars or planets to form.
One theory as to what cause the big bang is the m-theory. This suggests that two other universes collided causing another universe to form (ours). So now, they believe there is a multiverse (more than one universe.)
One theory as to what cause the big bang is the m-theory. This suggests that two other universes collided causing another universe to form (ours). So now, they believe there is a multiverse (more than one universe.)
Friday, December 4, 2009
blog post #3
1. Astronomers can detect extra-solar planets by radial velocity, astrometry, transit method, and optical detection.
2. Astronomers detect extra solar planets by radial velocity which is also known as the Doppler spectroscopy. This is when they detect the movement of a star which is caused by the gravitational pull of another planet. They use the Doppler effect to detect the frequency of waves that are coming to or away from us. When it is moving away, the light of the spectrum is red, and vise-versa it is blue. They then can determine the size and orbit of the planet.
3. About 75 planets have been discovered by radial velocity.
2. Astronomers detect extra solar planets by radial velocity which is also known as the Doppler spectroscopy. This is when they detect the movement of a star which is caused by the gravitational pull of another planet. They use the Doppler effect to detect the frequency of waves that are coming to or away from us. When it is moving away, the light of the spectrum is red, and vise-versa it is blue. They then can determine the size and orbit of the planet.
3. About 75 planets have been discovered by radial velocity.
Monday, November 23, 2009
Blog post #2
My favorite planet is Earth. This is because with out Earth I wouldn't be alive today. It is my home and has beautiful landforms. I also think that Earth looks the prettiest from space. (: Earth provides me with the air I need to breathe, the water I need to drink, and the food I need to eat.
Monday, November 16, 2009
Blog post #1
Black Holes: Black holes form from a red star that collapses on itself. They are 10 to 15 times more massive than the sun. Its gravitational pull is so great that even light cannot escape. For something to get sucked into one it has to pass the Schwarzschild radius. Once it passes this point, you cannot escape.
Mars: Mars is the 4th planet from the sun. Its atmosphere consists of mostly carbon dioxide. It has two moons named Diemos and Phobos. At a certain time of year Mars seems to exhibit retrograde motion from Earth's point of view. At one point people thought there might be a possibility that humans could live on mars but it gets to outrageous temperatures.
Pluto: It is debatable if pluto is a planet or not. It actually is classified as a dwarf planet which means it has not cleared it's orbit. Pluto is small and rocky and comes just after Neptune. It is so cold on Pluto that nitrogen and oxygen becomes frozen. It is two-thirds the size of our moon, but is the largest object in the Kuiper Belt.
Asteriod Belt: The asteriod belt comes right after Mars but right before Jupiter. THe asteriod belt consists or, yes, asteriods! Asteriods are chunks of rocks, that sometimes can be metals. Every now and then an asteriod come into Earth's atmosphere and strikes Earth's surface. Some don't even reach the surface, they can burn up because of how fast they come towards Earth.
Milky Way Galaxy: The milky way galaxy consists of Mercury, Venus, Earth, Mars, Asteriod Belt, Jupiter, Saturn, Uranus, Neptune, Pluto, then the Oot Cloud. We, obviously, live in the milky way galaxy. It is about 13 billion years old.
Mars: Mars is the 4th planet from the sun. Its atmosphere consists of mostly carbon dioxide. It has two moons named Diemos and Phobos. At a certain time of year Mars seems to exhibit retrograde motion from Earth's point of view. At one point people thought there might be a possibility that humans could live on mars but it gets to outrageous temperatures.
Pluto: It is debatable if pluto is a planet or not. It actually is classified as a dwarf planet which means it has not cleared it's orbit. Pluto is small and rocky and comes just after Neptune. It is so cold on Pluto that nitrogen and oxygen becomes frozen. It is two-thirds the size of our moon, but is the largest object in the Kuiper Belt.
Asteriod Belt: The asteriod belt comes right after Mars but right before Jupiter. THe asteriod belt consists or, yes, asteriods! Asteriods are chunks of rocks, that sometimes can be metals. Every now and then an asteriod come into Earth's atmosphere and strikes Earth's surface. Some don't even reach the surface, they can burn up because of how fast they come towards Earth.
Milky Way Galaxy: The milky way galaxy consists of Mercury, Venus, Earth, Mars, Asteriod Belt, Jupiter, Saturn, Uranus, Neptune, Pluto, then the Oot Cloud. We, obviously, live in the milky way galaxy. It is about 13 billion years old.
Tuesday, November 10, 2009
Blog post #8
I do believe that Pluto is really a planet. It revolves around the Sun and it is spherical just like all planets. Pluto is not just a block of ice, it even has more than one moons that revolveround it.
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