Wednesday, November 26, 2008
Annie Cannon and her Specta
If I had to do one thing for the rest of my life it would have to be finding the money to cure starvation and malnutrition over the world because many people are dying because of the lack of food or the lack on nutrients. I would like to travel to Africa first and help the sick and homeless with this problem.
Thursday, November 13, 2008
asteroids
asteroids- I think we should be concerned about asteroids because there have been many predictions that one is going to hit the earth and destroy part of it. And if we stay concerned about them we could put the people in danger into a safer place if we have the right system to detect where the asteroid will hit. If you think about Tanguska and how much it would have helped if we knew it was coming then we could have saved somethings.
But then again if we don't have to equipment to figure out when and where the asteroids will hit then we can't save anybody. But I still think it is a good idea to be concerned about them and to keep studying about them just in case one hits the earth. It's never to late to discover something new. And it would be extremely helpful knowing when and where an asteroid will hit.
But then again if we don't have to equipment to figure out when and where the asteroids will hit then we can't save anybody. But I still think it is a good idea to be concerned about them and to keep studying about them just in case one hits the earth. It's never to late to discover something new. And it would be extremely helpful knowing when and where an asteroid will hit.
Wednesday, November 12, 2008
The World of Plate Tectonics
1.
a) Pangaea was when the world was all one land mass.
b) Sea Floor Spreading is when the ocean floor is extending when two plates move apart
c) Plate Boundaries are found at the edge of the plates and there are three types: Convergent, Divergent, Conservitive.
d) The Ring of Fire are a group of volcanoes in the Pacific Ocean from Hawaii to Japan
e) The Mid-Ocean Ridge is an underwater mountain range, it usually has a rift running along its axis formed by plate tectonics.
f) A shifting north and south pole only happens once in a very very long time and they don't know why.
2. The volcanoes on the moon are extinst, which the crust is not moving and its vice versa for mars.
3.
DUBO- 4.26mm/yr
HILO- 35.77mm/yr
KELY- 11.23mm/yr
HOFN- 14.87mm/yr
-It tells us they are slowly moving
4. The momentum of the water displaced by tectonic uplift had also dragged huge rocks. They each weigh a millions of tons
- the shape of ocean is where it originated and there was a sudden vertical rise in the sea bed
-energy released-the same as 26.3 megatons of tnt.
5.
1) the continents fit together like a puzzle
2) found fossils of animals that couldnot have survived unless the contenents were connected
3) found fossils of tropical plants in antarctica
a) Pangaea was when the world was all one land mass.
b) Sea Floor Spreading is when the ocean floor is extending when two plates move apart
c) Plate Boundaries are found at the edge of the plates and there are three types: Convergent, Divergent, Conservitive.
d) The Ring of Fire are a group of volcanoes in the Pacific Ocean from Hawaii to Japan
e) The Mid-Ocean Ridge is an underwater mountain range, it usually has a rift running along its axis formed by plate tectonics.
f) A shifting north and south pole only happens once in a very very long time and they don't know why.
2. The volcanoes on the moon are extinst, which the crust is not moving and its vice versa for mars.
3.
DUBO- 4.26mm/yr
HILO- 35.77mm/yr
KELY- 11.23mm/yr
HOFN- 14.87mm/yr
-It tells us they are slowly moving
4. The momentum of the water displaced by tectonic uplift had also dragged huge rocks. They each weigh a millions of tons
- the shape of ocean is where it originated and there was a sudden vertical rise in the sea bed
-energy released-the same as 26.3 megatons of tnt.
5.
1) the continents fit together like a puzzle
2) found fossils of animals that couldnot have survived unless the contenents were connected
3) found fossils of tropical plants in antarctica
Monday, November 10, 2008
Venus
My video is over Venus. It gives you a lot of information about the planet. It gives important facts about Venus. It told me that Venus is 12104 km and Earth is 12756 km. It is the second nearest planet to the sun. 67,237,900 miles. It is brighther than any other planet or any star. It has sulfuric acid and 97% of it has carbon dioxide. It is a very dry and hot planent. The temperature on Venus is about 470 degrees Celcius or 900 degrees F.
The Moons of Jupiter Lab
The periods of the four moons vary differently from each other. Ganymede had the best orbit because it was farther away and it took more time to make a complete orbit. The farther away the better because the less likely they will run into something. IO probably had the worst orbit because it was close together and it took a very short amount of time to finish one complete orbit.
Galileo would have probably had a difficult time seeing the moons with a 10x telescope because when doing the moons of Jupiter Lab, it was hard to see the moons at 100x. And when you zoomed in, it was hard to get all the moons in. Galileo decided that if Jupiter had its own mini system then why wasn't there one around the sun. Galileo believed the sun was the center of the universe.
Galileo would have probably had a difficult time seeing the moons with a 10x telescope because when doing the moons of Jupiter Lab, it was hard to see the moons at 100x. And when you zoomed in, it was hard to get all the moons in. Galileo decided that if Jupiter had its own mini system then why wasn't there one around the sun. Galileo believed the sun was the center of the universe.
The Moons of Jupiter Lab
The periods of the four moons vary differently from each other. Ganymede had the best orbit because it was farther away and it took more time to make a complete orbit. The farther away the better because the less likely they will run into something. IO probably had the worst orbit because it was close together and it took a very short amount of time to finish one complete orbit.
Galileo would have probably had a difficult time seeing the moons with a 10x telescope because when doing the moons of Jupiter Lab, it was hard to see the moons at 100x. And when you zoomed in, it was hard to get all the moons in. Galileo decided that if Jupiter had its own mini system then why wasn't there one around the sun. Galileo believed the sun was the center of the universe.
Galileo would have probably had a difficult time seeing the moons with a 10x telescope because when doing the moons of Jupiter Lab, it was hard to see the moons at 100x. And when you zoomed in, it was hard to get all the moons in. Galileo decided that if Jupiter had its own mini system then why wasn't there one around the sun. Galileo believed the sun was the center of the universe.
Wednesday, November 5, 2008
Wednesday, 11/5/08
I enjoyed the Physics PheT Lab. I thought it was interesting and it gives a GREAT visual of how the solar system works. It was also easy to understand. After watching the video clip I realized how big of a difference there was in the different planets. It was also a good visual. I noticed though that Venus and the Earth were close and size. I thought the Lab and video clip were great props to have a better understanding about the solar system.
Sunday, November 2, 2008
Ray Davis/John Bahcall
Ray Davis/John Bahcall
(1944-)/(1934-2005)
*suggested that it might be possible to detect neutrinos from the sun as a result of Bahcall's calculations on solar nuclear reactions.
http://archive.sciencewatch.com/interviews/john-n-bahcall.htm
S. Chandrasekhar
S. Chandrasekhar
1910-1995
*developed the theory of white dwarf stars, showing that quantum mechanical degeneracy pressure cannot stabilize a massive star.
http://www.phys-astro.sonoma.edu/bruceMedalists/Chandrasekhar/index.html
Arno Penzias/Robert Wilson
Arno Penzias/Robert Wilson
(1933-)/(1936-)
* they recognized it as what is now called the Cosmic Microwave Background (CMB)
http://www.bnsc.gov.uk/4728.aspx
Annie Cannon
Annie Cannon
1863-1941
*established the system of classifying the spectra stars.
http://astro.berkeley.edu/~gmarcy/women/cannon.html
Johannes Kepler
Johannes Kepler
1571-1630
*discovered that the Earth and planets travel about the sun in elliptical orbits.
*He gave three fundamental laws of planetary motion.
http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Kepler.html
Edwin Hubble
Edwin Hubble
1889-1953
*He discovered that the degree of redshift observed in light coming from a galaxy increased in proportion to the distance of that galaxy from the Milky Way. This became known as Hubble's Law and would help establish that the universe is expanding.
http://en.wikipedia.org/wiki/Edwin_Hubble
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