Questions

Bethany
Mrs. Medenica
Science 7B
May 13, 2013

Questions

1. In my model the large styrofoam ball represented the sun that stayed in one place the smaller one was used for the moon that rotated around the sun.

2. Half of the moon is showing when you shine a light on the moon which looks like the First Quarter or the Third Quarter.

3. The drawing that has no shadow over the circle is a full moon. A new moon has a shadow over the entire thing. A waxing crescent has a shadow over most of it on the lift side. A waning gibbus has most of the moon covered on the left side.

4. Whenever you rotated the light the ball always lit up halfway since the ball was always in one place and the light shone on different parts of the moon.

5. The part that was lit by the lamp was the top and bottom because whenever the sun shines on the moon it always shines on one side. I think that the darkness of the moon is caused by an eclipse because the moon eclipse occurs when the moon passes directly behind the earth into its shadow.

6. I think that this experiment helped solidify the phases of the moon and how they occur. I was also able to get a clearer picture. Some disadvantages were that you couldn't really see where there was always light. Another way to do this experiment is to use two pieces of paper and show the different phases of the moon while covering the piece of paper. 

Jupiter Still Has Water From 1994

Bethany

Mrs.Medenica

Science 7B

May 6 2013

Article by Meggan Gannon

Published: May 6, 2013

URL: http://www.space.com/20796-jupiter-water-comet-crash-1994.html

Jupiter Still Has Water from 1994



      

        It is known that the stratosphere in Jupiter is filled with water. This was delivered by a  cataclysmic comet crash, on July, 1994, the comet, Shoemaker-Levy 9 crashed into Jupiter in more then 20 broken pieces. This crash gave Jupiter scars that are large enough to be seen by small telescopes on earth. Comets are made up of ice which dropped loads of water on Jupiter and a little on Saturn, Neptune and Uranus.  Though the scientists are not sure if those three planets got the water from the comet because there are the other possibilities that there was a steady rain interplanetary (between planets) dust particles.  Water vapor was first spotted in Jupiter's higher atmosphere by the European Space Agency's in 1997. Scientists are still thinking about other possibilities about where the water came from they are sure that the water hadn't risen from the inner part of Jupiters atmosphere because there's a vapor-blocking "cold trap" that separates Jupiter's stratosphere from the clouds in its troposphere that is below. Cavalié states in a report written by the ESA, "According to our models, as much as 95 percent of the water in the stratosphere is due to the comet impact," Cavalie also states, "All four giant planets in the outer solar system have water in their atmospheres, but there may be four different scenarios for how they got it." 

       This relates to what we have been doing in class because we have been talking about the stratosphere and troposphere that are on earth. I chose this article because I thought that it would explain whether or not the layers of the earth are similar, same, or different  on different planets. This also relates on what we have been doing in class because we talked about different planets also the atmosphere on earth though this article talked about the atmosphere on Jupiter which was interesting because you get to compare. Overall I enjoyed this article though sometimes it was a bit hard to understand.