2010 Wilson IB 6

When we started class off, we talked about a picture of a rock. We had to answer the question “How did this rock form?” and we found out a couple things like the different sediments or particles of this particular rock were coming together. Another thing that we learned was that the farther down the layer of rock, the older it is, and the more close the layer of rock is to the top, the younger it is. Also, we were shown an image of a meandering river or stream and were asked about why the sand was deposited at certain spots of the river/stream. We found out that at these particular spots, the sand was deposited because of the bends. This is, because the streams velocity is slower (inside bend) than the spots where there wasn’t any sand or very little of it (outside bend). Another thing that we were shown was a cut bank in the middle of both Arkansas and Mississippi and were asked why the border just doesn’t follow the rivers route, and concluded that this is because the landscape changes and the world is continuously changing. The last thing we did was we used sand to make our own stream with a flow of water along with a few different sizes of sediments to see which ones would travel to what spot of our stream.

During class on 11/12/10, we went over our review packets for our up-coming test on 11/15/10. Also, that day, we started to look at something new to us. This was Speed, Velocity Problems. We didn’t get very far, but we did get to take a look at the first problem. For this problem, we used the formula v=s/t. The question was “A motorist travels 406km during a 7.0-hour period. What was the average speed in km/h and in m/s?” By doing this speed, velocity problem, we found out that the motorists average speed in km/h was 58 km/h (we weren’t told to convert it into m/s). Another thing that I looked at was the acceleration formula. This formula was a= the change in v/t.

In class today we talked about models. Models help us predict things that will happen in the future and they help us huderstand things. models are a representations of how things work. Timelines are an example of a model.

We also talked about heat. Heat is not made up of atoms. The question, Which has a higher temperature, Lake Ontario or a hot metal rod, was asked. A hot metal rod has a higher temperature but Lake Ontario would have more heat because there are more molecules.

The Kelvin scale is an absolute temperature scale, it is based on absolute zero. It was named after physicist and engineer William Thomson or Lord Kelvin (1824-1907).  Water freezes at 273.15 K and water boils at 373.15 K. The markings on the scale aren’t called degrees but are called simply Kelvin. The Kelvin scale was made so that equations ( like the ideal gas law) could be expressed simply. Zero Kelvin is the absence of all heat and no colder temperature is possible.

Time is a one-dimensional quantity used to quantify the duration of events, sequence events, and to quantify and measure the motions of objects. It can be quantified with comparative terms such as longer, shorter, faster and numerical terms such as seconds, hours, days, etc. Throughout time, people have used different inventions to measure time, but now we use clocks and the standard unit of measurement that we use for time is seconds.

Posted by Chris Rush

The Standard Units Of Temperature That Is Currently Used Besides The U.S, Uses Kelvin Or Celsius. The Kelvin Temperature Uses 1/273.16 Or As In The Text Books 1/273 Of Thermodynamic Temperature To Tell Triple Points Of Water. Unlike The Other This Contains An Absolute Zero!

Kelvin & Celsius, They Run Hand In Hand Together As One, Whatever The Temperature At Celsius Is Just Add On 273 More And You Will Get That In Kelvin.

The Celsius Scale In Other Words Is Used By Two Points, 0 Degrees Celsius Is The Freezing Point And 100 Degrees In The Boiling Point In Water. Which This Uses The Metric Scale In For Going Up In Temperature.

Celsius Is Equal To Kelvins Units.s

In the late 16th century Galileo invented the first modern thermometer. Later on Anders Celsius made a system in which he made his 2 fixed points 100 freezing and 0 boiling. Carl Linnaeus suggested reversing it. this made it alot easier to interpret. The systems of measuring temperature that most scientist perfer is Kelvin, which makes 0 the lowest degree also known as absolute zero. Celsius has the freezing point of water as 0, and Fahrenheit, which has the freezing point is 32. a degree really cant be define because in each scale a degree has a different version.
created by Kaitlin Lu and Geordy Aponte

Volume is needed to know the exact amount of any commodity but weight is the measure that is more likely to be relied upon. Volume can be measured by using mathematical equations or by measuring liquid displacement. The standard unit for measuring volume is milliliters (mL).  1000 milliliters is equal to 1 liter.

*Volume is the amount of 3-dimensional space occupied by an object (solids, liquids, gases, plasma, or vacuums are how much 3-dimensional space it occupies).
          – A metric unit for volume is a liter.
*Liter: equal to 1,000 milliliters, a metric unit of capacity, formerly defined as the volume of one kilogram (the base unit of mass) of pure water under standard conditions. A liter is now equal to 1,000 cubic centimeters or approximately 1.75 pints.

*Did you know?: A question is “why do we use cubic units when describing volume?”

          – An answer to that would be “You use cubic units when describing volume because a cube is measuring 1 unit on each edge and the edge has a volume of 1 cubic unit.” in this case with a cube.
*The history of measuring volume:
          – Although volume is needed to know the exact amount of any commodity, weight is the measure more likely to be relied upon (weight is more based on mass).
*The current standard unit of measuring volume:
          -Milliliters (mL) or 1/1,000 of a liter.
*Volume is used to find the amount of liquid inside of an object and soon, and is still widely used to this day.

        Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid or gas.Throughout history there has been many measurements created for sound which were measured in units of decibels, sones, mels, phons and hertz. These measurements of sound measure sound intensity, loudness, and frequency.The current standard unit of measuring sound is hertz which measures the number of cycles per second of a periodic phenomenon.

        Hertz were invented by Heinrich Hertz. Heinrich was a German physicist who made important scientific contributions to the study of electromagnetism. Hertz was the first to satisfactorily demonstrate the existence of electromagnetic waves by building an apparatus to produce and detect VHF or UHF radio waves. He was born in 1857 and died in 1891 of Wegener’s granulomatosis.

By: Ayaan Haji and Sophie Gallivan