Monday, March 21, 2011

Finding the Denisty of a mineral lab


Guiding Question- Does the density of a mineral depends on the size of the mineral sample?
Hypothesis-   I think it does because the bigger the mineral is the larger the mass is.
Controlled variables- I am always going to keep the same materials.
Manipulated variable- The sample of minerals is going to stay the same but the size of it will.
Minerals used- Galena.
Materials- Type of mineral, graduated cylinder, balance scale
Procedure - We first got 4 samples of the same mineral, Galena. We found the mass of each sample, then found the volume of each one and in the end we divided mass by volume to get the density. In the need when we looked at what we have been working on it really didn’t make sense to us. Density was the smallest number on the chart!
Date Table-
Galena
Sample 1
Sample 2
Sample 3
Sample 4
Mass (g)
105
101.6
89
70
Volume (ml)
15
20
10
5
Density (ml,g)
7
5.08
8.9


Graph-

Data Analysis- The graph mostly shows the mass, volume and the density of the mineral Galena which we used. AS you might have noticed it really doesn’t make sense. I mean the density is suppose to be the biggest number out of the mass, volume and density, but for us it turned out to be the smallest.

Conclusion- I think this project was fairly hard. The only problem that my group and I have is the density. I mean it really doesn’t make sense what we have there. The density is supposed to be the biggest number since it shows how dense an object is. I would prefer us doing it again, and see what we did wrong.
Further Inquiry-
We did our lab report twice and we still got a really low density. Then Miss M. asked us if we are writing the volume down correctly and when we took a close look we saw taht we might need to change some things in order to get close. Then we chacked the "spacific gravity" or the density that scienticts found. It is 7.4 - 7.6, which means that we were not so off. Of course it depends on the size, but since scientists checked many different sizes we should probably believe them.

Mineral Galena









Monday, March 14, 2011

Rocks & Minerals Reflection

In this unit, we learned lots about both rocks and minerals! WE compered them, researched about them, talked about them and more! We took notes on them and answered the following questions-
  • How are rocks created?
  • What types of rocks are there? How are they made? Give examples.
  • What is the rock cycle? Explain and add diagram.
  • How can you identify a mineral?
  • How are minerals created?
  • Can rocks be minerals? Explain.
  • What is the most precious mineral and why.
  • Give 3 types of rocks & minerals and 3 interesting information about each.
Now I will answer all of the questions listed above.
  1. How are rocks created?
  2. Rocks are created of 2 or more minerals.
  3. What types of rocks are there? How are they made and give examples.
  4. There is 3 types of rock. Igneous, Sedimentary & Metamorphic. Igneous is made when these are rocks that solidified directly from molten silicates, which geologists call magma. Examples are: granite, basalt, pumice and flint (which is a form of quartz). Sedimentary is formed when these are formed when igneous rocks are eroded as a sediment under the sea. Fossils are often found in this layer. Examples are limestone, chalk, sandstone. Metamorphic rocks are formed when these are made up of igneous and sedimentary rocks of all ages which have been subjected to intense pressure. Examples are: slate, marble, quartzite. 
  5. What is the rock cycle. Explain and include diagram.
  6. The rock cycle is a collection of process which shape the surface of the earth. Rocks are constantly recycled by burial, melting, uplift and erosion.  These processes are driven from inside the earth and the sun.( In which drives processes in the atmosphere and lends to the weathering of rock)
  7. How can you identify a mineral?
  8. In order to identify a a mineral ask your self the following questions- Is it a non-living material? Is it a solid? Is it formed in nature? Does it have a crystallized strucute?
  9. How are minerals created?
  10. Minerals occur naturally on earth. Each mineral has a specific chemical compound, as compered to rocks, which don't need a special atomic structure.  
  11. Can rocks be minerals? Explain.
  12. I think that rocks can not be minerals, because rocks ARE made out of minerals.
  13. What is the most precious mineral? Explain.
  14. I think the most precious mineral is diamond. It is the most precious mineral because it is the most rare mineral, very hard and also very very hard to find. 
  15. Give 3 types of minerals and rocks and interesting information about them.
  16. There are three types of rocks, which are classified based on their formation. They are identified by comparing various characteristics, including color, hardness, texture, chemical composition and fossil content. The 3 types are- Igneous rocks are formed immediately after cooling down of magma. If the magma cools down underneath the Earth's surface, intrusive igneous rocks are formed (e.g. granite); whereas extrusive igneous rocks are formed after cooling of the volcanic lava or molten rock (e.g. basalt). Read more on igneous rock facts. Sedimentary Rocks - Sedimentary rocks are formed after deposition and compaction of eroded matter and transported sediments (e.g. sandstone, mud stone, limestone). Formation of these rocks takes place on or below the Earth's surface. Read more on sedimentary rock facts. Metamorphic Rocks - A metamorphic rock is formed from igneous, sedimentary or another metamorphic rook, after subjecting it to a very high temperature and pressure (e.g marble). Read more on metamorphic rock facts. As of date, more than 2000 types of minerals have been identified. And with each passing day, new minerals are being discovered by geologists. Hence, it is impossible to remember all the types of minerals. Based on the presence or absence of silica, minerals are categorized into two types. Silicate Minerals - The primary components for silicate minerals are silica and oxygen. They are formed after cooling down molten rocks, either on the Earth's surface or below the surface. Some common examples of silicate minerals are quartz, mica and feldspar. Non-Silicate Minerals - As the name signifies, silica and oxygen are absent in non-silicate type of minerals. They may be formed after cooling down magma or after modification of magma. Examples of non-silicate minerals are oxides, sulfides and carbonates.
That was all that I studied about. Although above I listed only a few of the 1,000 facts, I am pretty sure that the facts are not false. Below I will post some pictures of Igneous, metamorphic and sedimentary rocks. I will also post the rocks cycle and other pictures to help you understand what I was talking about.

                                                           Igneous Rock-












Metamorphic Rock-















Sedimentary Rock-




The rock cycle-

In conclusion, learning about rocks & minerals is fun, BUT can sometimes be difficult! The names especially are very hard to pronounce, but other then that I think it was a pretty fun unit! Rocks and mineral are a very big and interesting topic to study! I hope that I can do some more research and further inquary next time that we do this unit!













Wednesday, March 9, 2011

What is a Mineral?

This unit was all about studying "What is a Mineral". We saw some videos, sideshows, did some worksheets and ended up having a test.

What is not a mineral and why-
  • Wood- because it was once a living thing
  • Fossils- because they were once living
  • Bone- because it is a living material
  • Granite- instructive igneous rock
  • Pearls- because it is made by oysters
  • Coal- because it is made of sedimentary rock
  • Rock Salt- because it is made of sedimentary rocks

What is a mineral-
  • Gold
  • Topaz
  • Quartz
  • Diamond
  • Talc
  • Ice-burg

Those are all minerals, and non- minerals. Now I will tell you how you can recognize a mineral. Ask yourself the following queestions and you will get the naswer.

Questions that will help you determine if the item is a mineral-
  • Is it a non-living material?
  • Is it a solid?
  • Is it formed in nature?
  • Does it have a crystalline structure?
If you answer this questions correctly you will egt the right answer! This unit was, fun and since we will continue it, I am exitied to learn more about it!

Tuesday, March 8, 2011

Volcano Reflection

O.K. Before I even start writing this reflexction I need to tell something. When I answer the questions you will see taht I have Answer 1 and Answer 2. Answer 1 was for my first presentationa nd Answer 2 was for the second time that I presented the same thing. Also if you see any spelling mistakes blame the computer not me, because this computer doesnt have spell check! Hope you enjoy my presentation!

This unit was all about picking a volcano and researching it. We had and option of working in partners or alone. I choose to work with a partner. My partner was Alek. We choose to study Mount Vesuvius and the city Pompeii, which was buried by its huge eruption in 79 A.D. We found lots of interesting facts about the city Pomeii, and mOnu Vesuvius. There was also lots of information about the erouption, but one thing that I noticed there wasnt much information was who descovered the city Pomeii. I searched lots of websites, one of them was Answers.com and it did not have an answer! When I searched even more on 3 other websites I found 3 same answers. It basiclyl said, A group of workers descovered it by exident. Thts was all. No name or anyhting!
Quiding Question- How does the volcano, in this case Mount Vesuvius affect people that live arounf it?
Questions that we need to answer-
1. How you think you did on your presentation?
Answer 1- I think for the first time it went really bed, all because we were not ready. Alek for example was reading clearly, but I personally had problems with reading everything. I have those problems, partly because I was shy, and also because I admitt I didnt prepare myself.
Answer 2-
2. What was missing in your presentation?
Answer 1- I think that was missing is actually adding that voice, and looking at the audienc, not justr eading off the computer. I also could talk about the video that we watched, and tell them something about it.
Answer 2-
3. What grade do you think you deserve and why?
Answer 1- If I were to garde myself know I would give myself a 1 out of 6. I would give myself this garde because, I didnt look at the audience, I read of the computer, I didnt speak loud and clear, I didnt explain what was yhappening in the video, and I was mumbling instead of speaking like a normal person.
Answer 2-
4.  What did you learned about volcanoes and how they affect people who
leave around them?
Answer 1- I learned that people that live next to a volcano can benefit form it. There are also bed sides of it. The bed side is this. When there is an erouption the people that live there, will get shocked by the smoke, or with be burried with lave. The good sides are these. People coem to see the volcano a lot in other words there is a lot of tourism. People can benefit from that, becasue they can give the visitors confort and take care of them.
Answer 2-
5. How do volcanoes affect the world?
Answer 1- Volcanoes have changed the world and they still do. When a volcano erouts or explodes it lets uot hot steam, lava and lots of ash. The ash unables people to see the shy, covers the sun and also we cant use airplanes to fly around the world. BUT, there are also good sides of a volcano erputing. When a volcano eroupts there is a big chance of a rainforest growing on the hard lava. Hard lava has very good posibillites of growing plants on it.
Answer 2-

Conclusion-
I think taht this unit was one of the funest one swe had. I promise myself that next time IF we do this again I will try and do it by myself. I have never worked alone before. I ma sure that it cant be that hard. If I try I will see. I especially liked taht Ms. M let us pick which volcano and topic we wills tudy. Choosin g Pomeii and Mount Vesuvius, was a good idea becasue I have seen Pompeii and I have been standing on Moutn Vesuvius, just last year! I think that this was a very interesting project and I hope to do it again! Soon!

This are soem pictures of Mount Vesuvius and Pompeii!

This is a picture of Mont Vesuvius eropting and the city Pomepii benith.










This is a picture of the burried and killed people who were trying to pretect themselfs from dieing. P.S. They didnt survive.

This picture was taken latter when the camaras where still without color, but it is showing Mount Vesuvius!















This is a picture of Mount Vesuvius and the unburried city of Pomeii after the explosion!