PSA Presentation

I learnt from doing this project many things about inertia in rowing. I also learnt a lot about friction, motion, force and many more. One thing that I learnt from my classmates is that for example if a car suddenly stops, you can get whiplash or go forward. That is why you should ware a seat belt. I think it is important to understand the science between accidents because you have to know what happened in the accident.

From feet to Fathems Lab Report

Guiding Question:  What is the importance of having an International measuring system?  How accurate are old measurements using body parts?

It is important to have a International measuring system because everyone will know it and we will know how long something is. The old measuring was not so accurate and there was many ways of measuring so there were many objects that had a different measurement.

Hypothesis:  (What do you think?)

I think that we won’t get the exact measurement for each one but I think we will be close for all of them. That is because the way of measuring in the old times is different than now.

Materials:

·         Partners Sofia and Maryam

·         Objects in the classroom (whiteboard, desk, hallway, SPACE book, Peep, Crayon box)

·         List of ways to measure: 

Pace:  legs outstretched =1 yard approximately or 1 meter

Egyptian cubit= elbow to tip of the middle finger= 18 inches or 45 cm

Fathom = middle finger to middle finger across the body = 6 feet, 180 cm, 1.8m

Palm = across the palm of the hand = 3 inches or 8 cm

Hand including thumb = 4 inches or 10 cm

Span = from tip of thumb to tip of little finger= 3 palms or 9 inches or 24 cm

English yard = from fingertip of arm to nose = 36 inches or about 1 meter

Foot = 12 “or 30 cm approximately

Fingernail = tip of pinky =1/2 inch = 1 cm.

·         Meter stick or measuring tape

·         Calculator

Procedure: 

1.       Make a data table in your notebook with 7 columns and 7 rows.

2.       Choose one of the six objects or distances you will measure.

3.       Determine what form of measurement you will make with the first object

4.       Measure it with the determined form of measurement 3 times, and then find the average. 

5.       Measure it with the meter stick/or measuring tape and find the actual measurement.

6.       Repeat the same for each of the five objects that are left and measure it with a different type of measurement, 3 times, find the average and again the actual measurement.

7.       Compare class data results.  Find the average of these results.

Data Table:

Object	Way of measuring	Try 1	Try 2	Try 3	Average	Actual
White Board	cubit	6	6	6	240 cm	254 cm
Space Book	Palms	3	3	3	3.4	10.3
Lab Table	cubit	120 cm	120 cm	120 cm	120 cm	136.5
Hallway	Fathoms	42	40	42	41	41
Peep	Span	16	15	15	15	14
Crayon Box	Nail	9 cm	9 cm	9 cm	9 cm	9 cm

Data Analysis: 

What patterns or relationships do you see between the forms of measurement, the averages you and your partner got and the actual measurement for each object? 

 The pattern I see is the one that they are not always exact, but are very close. What I'm trying to say is that almost all of our measurements are very close. We only got 2 correct.

Conclusion:  How effective were the old English forms of measurement compared to using the meter stick or measuring tape?  What is the importance of having an International measuring system?  Answer the guiding question here. Was your hypothesis correct in the beginning?  If no, what do you think now?  Which objects were the easiest or most accurate to measure?  Which form of measurement did you prefer the most?  State why for both questions.  Give examples to help you explain.

  The old way of measurement was quite effective even if they weren't right, because they were off by a few. But comparing to the meter stick the old way is really bad because it wouldn't tell you the exact measurement. So as you can see there is a good and bad side to the old way of measuring. It is important to have a International measuring system because like that if you want to measure something that is important, you have to make the measurement correct. Also, you will know approximately how big or wide something is. My hypothesis was correct. We didn't get the right answers but they were very close. As you can see in my graph we only got 2 correct and the rest were close. For me it was mostly easy to measure the lab table because we didn't have to hold it or lay down (like we did to measure the hallway). I mostly liked measuring with Egyptian cubit because it was just simple for me to measure that way. If they didn't think of the International measuring system I would most likely use the Egyptian cubits.

Further inquiry: What improvements would you make next time? What errors did you and your partner make? Do you have any further questions about measurement?  If so, what were they? 

I wouldn't improve anything. I think we did quite a good job. We only sometimes made errors with finding the average. When we started this project I asked myself: "Why in the world did they ever even make up all these ways to measure? I'd say it was pretty complicated during that time for measurements because there were so many ways of measuring one person might know one way and the other wouldn't know what he is talking about."

Earth's Inner Secrets

We finished the Earths Inner Secrets unit and we had to make a bubble.us. Everyone had to write what they learnt and this is what I know.

Mining Minerals In Your Country

The expansion of mining in this area began in the area when the rulers Nemanjićes brought miners from other countries. Rude, iron, chromium, manganese, molybdenum, cobalt, cadmium, copper, antimony, lead, zinc, coal, oil and cement marl. A special group of minerals are breeders of steel. They are added to enhance some of its most importantbreeders karakteristike. U steel include chromium, manganese, molybdenum, cobalt and kadmijum. Srbija has small amounts of coal. There are deposits of lignite coal, and coal. Three basins:  Kostolac, Kosovo and Kolubara.Two places in Serbia that I found are Bor and Majdanpek. Bor began in 1979. Since then and now, 150,000,000 tons of ore has been lifted. Each year, they take out about 1.9 million tons of ore from the ground. The last production was in 2002. Majdanpek is 80 km away from Bor. It started in 1961. From there people in Serbia get Copper. For this blog post I researched a lot. I feel like I did a good job and I hope you learnt something new!

Mapping earthquakes and volcanoes

In science class we worked on our mapping skills and used latitude and longitude to plot Earthquake and Volcanic occurences on a world map. Since we learnt in Humanities how to find placed on a map using latitude and longitude. The question we were supose to answer was:  Is there a pattern in the locations of earthquakes and volcanoes?  Well...what do you think? My hypothesis is: I think there is a pattern because for example the earthquake in China. It caused a tsunami. So as you can see I believe that volcanoes and earthquakes do have a pattern.

Reflection on questions

For this work I at first found this a bit hard. After I found it easy because I understood it. The question I found hard is How are minerals created and How can you identify a mineral. It took me about 15 minutes for both and about 5 minutes for the rest. I learnt a lot of interesting facts like diamond is the hardest mineral and pumes can flow on water. In conclusion in this unit I learnt many new things.

Reflection On MT Etna

My Prezentation

I think I did very well on my project because I had a lot of information and a video about volcanos. The thing I dodn't like is that my partner was always telling me to shorten it up and he stoped the video in the middle. Our prezentatio wasn't missing anything. I think for my grade I will get a 5 or 6, because I was prepared and had a LOT of information. Unfortunently I only said half of it.

Other Prezentations

I learnt a lot about volcanoes during the prezentations. I think I mostly learnt from Luka's prezentation. He incpiered me about MT St Helen. It affects people because the volcanoes could erupt every minut exept if its extinkt so people should be alert if they are close to the volcano. It affects the world because when it erupts there will be fertile soil.