Public Service Announcements

I my science class everyone had to make a Public Service Announcement or P.S.A. on the safety of doing something and the science behind it. I did the safety of wearing proper gear while riding a motor cycle. A lot of people talked about inertia, force, momentum, and Newtons first law, and friction. From my classmates I learned that momentum is the force an object gets while it is in motion. Also I learned that friction is the rubbing between two different objects, force is a push or pull motion, and Newtons law is that whatever is at rest stays at rest unless acted on by an outside force and whatever is in motion stays in motion unless acted on by an outside force. Another thing I learned was how dangerous things are that we do in our everyday life. I think it is very important to know the science behind accidents. That is because if you don't know what happens when there is an accident you could think that it was the person who jumped out of the car window when they actually flew out of the window because they wanted to stay in motion. If they didn't know that force waspushing people oout of a window they might not have made seat-belts or air bags which saves lives. So, yes it is very important to know the science behind crashes.

Marble motion

In my science class we did a lab about motion. we were seeing how hard you had to blow on marbles for them to move. Me and my partner had no problem with that because they always moved.

Guiding question- Does the mass of the marble affect how it moves?
When given a force, what happens to it's motion?

Hypothesis- I think that the smaller and lighter ball will move easier and faster.

Materials

• small marble
• big marble
• tennis ball
• metal marble
• ping pong ball
• small foam ball

Data my partner and I got

Small marble- light breath- moved 10inches

Hard breath-40+inches

Big marble- light breath - 22in.

Hard breath-40+ in.

Metal marble- light breath- 22in.

Hard breath- 40+ inches

Ping pong- ball light breath- 40+ in.

Hard breath-40+ in.

Small foam ball- light-40+ in.

Hard breath-40+ in.

Tennis ball- light breath- 6 in.

Hard breath- 16 in.

Data analysis

I can tell from the data I got that  the weight is a big factor in how far and fast the ball will move.  Also all the balls moved left and right they did not go in a straight line. It was not so much how big it was if it was light. The one that moved the least was the tennis ball because it was heavy and big, but it did move. One that was not that small was the ping pong ball, and it moved the farthest. It was hollow and very light.

 Conclusion

From my data I can tell that my hypothesis was incorrect. Actually it does not really matter on a balls size when it is moving unless it is really big of really small. It really only matter on it's mass. If it is light it will move far and fast, but heavy it will move a bit and slowly.  I also noticed that the balls almost never went in a straight line they would always be going to the left and the right. When you give the balls a  lot of force they move much faster, easier, and slower. If you do not really give to much force it will not move too much unless it is really light.

Further inquiry

If I were to do this project again I would use a bigger variety of balls. Another thing that  I would do is to make a track so it could not curve too much. Also I would weigh each of them to get a better answer. All in all I am happy with how I worked with my partner and did in general. If I did this again though I know there are ways I could do better.



           

From Feet to Fathoms Lab Activity

Guiding Question:

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

 Hypothesis

I think that the old way of measuring was not correct and is a bit harder to use. It was not correct because everyone is different is size so when measuring things like a fathom, pace, or English yard they can be the same, small, or really big difference in length.

Materials:

·         A white board

·         A space book

·         A desk

·         A hallway

·         A peep

·         A ruler

·         A calculator

·         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.

Procedure:

1.       Make a data table with 7 rows and 7 columns.

2.       Choose six items to measure.

3.       Decide which unit of measurement you will use.

4.       Now measure it three times then calculate the average.

5.       Next you measure the actual length with a ruler.

6.       Repeat the steps 3-5 with the rest of the items.

7.       Now compare the answers you got.

This is what the table should look like

Item	Type of measurement	Try 1	Try 2	Try 3	Average	Real measurement
White board
book
desk
hallway
peep

Record & Analyze 

Data Analysis:

I know that the data we got is right because there is not really any way to make a mistake in this. Half of the time the lengths were the same or really close. They were the same or really close on the space book, crayon box, and the peep. I think the measurements of the bigger objects were off.  Because  on bigger objects you would use fathoms(6 feet) to measure it quicker and when both of your arms are stretched out it is your height, so not everyone is different height so it does not really equal six feet.

Conclusion:

In this project to measure everything we used a meter stick and we measured in inches. It is important to have an international measuring system because when there is something important and you need to measure something and you do not have any way to measure it, but with the international measuring system you can.  The answer to the guiding question is that it is not very accurate but the measuring system can work for some people and you already know why it is important to have an international measuring system. It is the easiest to measure smaller items like the peep, space book, and the crayon box. Those were also the most accurate. When we were measuring were mostly used fathoms and inches. With the peep we used inches, and with the hallway we used fathoms.. For the forms of measurement they used a long time ago I think was good then but now we have an even better way of measuring.

Further inquiry:

If I had done this lab again I would change how I did a few things. I would have used other measurements to just try them. Something we did that was wrong was that the first time we did the measuring we only measured each thing once, but we went back and fixed it. The only question that I have is, were there any other measurements they used.

Forces and Motions

In my science class we are stating a new unit on forces and motions. I already know a few things about them. They  are kinetic and potential energy.  Kinetic energy would be if you put a ball on a hill and it was rolling down because it has and is using energy. Potential energy is when a ball is at the top of a hill next to the slant so it has energy but it is not using it because it is not moving. I also know that gravity is what can make us float of stay down. In space there is low gravity so we float, on Earth we a quite a bit of gravity but not to much because then we would be scrunched down.  Another thing I learned was that heavy things fall down quicker than light things. I want to learn more about positive and negative energy, how when you spin a bucket of water nothing comes out. I want to learn these by doing some tests, for example, dropping multiple things with multiple weights off a even height.

Earths Inner Structure

 

Throughout the unit I just did I have learned a lot.as you can see. For example, I know know that now the value of rocks can differ all over the place, like geiods are  valuable because they have many minerals on the inside. The things that I learned to support my answer were, the value of most minerals, the amount of crystals in a geiod, their beauty, and that you sell minerals for a higher profit. Our Area of Interaction of the unit was called Environments because minerals do in fact effect the environment. That is because, when you mine it can damage the ground which is part of the environment and minerals are made by the environment not humans. Throughout this unit I think I did quite good. That is because,I understood almost all of the information, I listened, and I took part in all of the activities we did.  I learned a few new skills in this unit such as, how to find out a minerals streak, (Dragging it on a streak plate) mesuring hardness by scratching one mineral on another and the one that got a scratch is the softer one, and how to calculate density.  This unit had many interesting parts in it. The things I found most interesting was learning minerals characteristics, and making the mineral project in which we chose a mineral and made any type of presentation we wanted, and gave all of their characteristics and more. I think the part that was least interesting for me was the mining because , we only learned a bit of it and we really did not do much with it. Next year the things I would change would be; I would maybe do a project like making a miniature model of a  subsurface mine,  try testing how to measure hardness,  table discussions on mining, and Learning a bit more about mining and how it works.

Science disscusion

In my Science class we had a table discussion about ocean minerals. My thoughts while doing this had not been changed at all. That is because we all had the same or very similar answers. I think right once we started doing the discussions it was a bit rough but once we got into it a bit more.

Here is they summery  we wrote at the end of each question.
Why are these minerals so valuable?

We think that the reason minerals are valuable is because they have many uses, and they are hard to get
to and require a lot of money to get to, and we do not know who owns the minerals

Who should have the right to receive them or the profits?

We think that whoever gets them should have the power them, but should barging with other countries
that are poor and cannot afford t mine in the trade for the Oceans minerals. Also that the Ocean does
not belong to anyone, but for example maybe Cleveland want some minerals, and it is a landlocked state
so it gets permits from California to mine in the ocean that borders it. That country has money so they
do not have to make deals, but maybe Iran is poor and is landlocked so they can make a deal with a
country that borders an ocean and in return give them oil, because they are rich in oil.

What are the problems with mining in the Ocean?

Mining for minerals is deep and it costs a lot of money to get down there and if you get down there,
there may not be minerals and then you would have wasted a lot of money and time. It is also risky
because it can be life threatening. With its costs a country can lose a lot of money and then not be able
to gain it back, because there may not have been minerals down there and cannot sell them to gain
more money or even the money they spent on it. That can then put a country in an economical crisis if it
makes the same mistake a few times.

Who owns the Oceans minerals?

We think that no one owns them, and if they can go there they can mine there. Also have to have the
money for it and then the can split the funds. Also that no one owns them because there are no borders
on the oceans.

What are the rights?

We think that the rights are who goes there, mines there, if they have money, and then they can trade
with other countries so that it is available in other countries.

Quartz

      Quartz is one of the most mined mineral in America. To mine them you pull them out of a big hole. Sometimes you need dynamite in this equation. Quartz is surface mining. That means you mine at the surface or very close to it. You can say in one way that it is valuable because it has many uses, but there is so much of them so they are not rare. You use them for; radios, jewelery,  sandpaper, glass,  soap, and many, many more. They can be transparent or opaque.  You cannot say America only depends on quartz because there are many others that we need but they do play a big role in our life.  For all almost all minerals you you export them to get others. I think you should not export quartz the most but you should because quartz is very abundant.