Lab+and+HW

**Materials :**

 * ======four 8 cm conduction bars (//steel, brass, copper, aluminum//)======
 * ======felt pen======
 * ======ruler======
 * ======wax strips or candles======
 * ======matches======
 * ======hot plate======
 * ======brick of block of wood======
 * ======stopwatch======
 * ======graph paper======
 * ======coloured pens or pencils crayons======


 * Procedures :** see page 432

**//__Conductivity Rate of Metals__//**

 * || Time(s) ||  ||   ||   ||
 * Distance (cm) || Graphite || Tin || Copper || Zinc ||
 * 0 || 0 || 0 || 0 || 0 ||
 * 2 || 47 || 10 || 14 || 12 ||
 * 4 || 62 || 23 || 24 || 24 ||
 * 6 || 82 || 33 || 35 || 35 ||
 * 8 || 1:01 || 1:00 || 56 || 49 ||

//** __Analyze__ ** //
//1. Heat was being conducted along the metal bars because each bit of candle wax would eventually melt. The conduction of heat was like a chain reaction once one drop of wax was fully heated the heat was heating up the rest of the metal causing the other points to melt as well. This reaction shows the theory of conduction that heat transfers from matter with high temperatures to matter with low temperatures.

2. A) No not all of the metals conducted heat equally because they all have different reaction rates.//

//b) Zinc, Tin, Copper, Graphite//

====**__//Conclude and Apply//__ **====

//1. Kinetic molecular theory explains that all particles in matter are in constant motion. During conduction, heat transfers from high temperature to low temperature. The fire making the metal strips hot increased the kinetic energy of the molecules. Fast moving molecules begin to collide with the slower-moving particles as the collisions happens, heat transfers to the cold parts of the metal strips which make it feel hot.

2. I would most likely use Copper because it was the slowest conductivity rate. This way, the rod would heat up slower, making the chance of burning yourself less.//

//** __Conclusion__ ** //
//In this experiment I learned that when metals have high conductivity the heat transfers a lot more easily and a lot more quickly. When heat is transferred in a metal, it goes from an area of high temperature to an area of low temperature.//

//__PIECING TOGETHER PANGAEA__//

 * Purpose: ** Use various pieces of evidence to reconstruct the supercontinent Pangaea.


 * Materials : ** See page 515


 * Procedures : ** See page 515


 * Analyze **

1. The continents South America and Africa because there shape was the easiest to fit together and the fossils made a clear path that was basically common sense to fit those two together.

2. The best clues to fit all the pieces together were some of the shapes, but mostly the fossil lines that were on it, and a lot of guess’s until you found the lines that matched.

3. A) North America, Greenland was hard to place. b) I don’t really know what would help other than a lot of guess’s and not guessing the same thing twice.


 * Conclude and Apply **

1. A) I started with the pieces I knew would fit together (South America and Africa) then followed the fossil lines to reconstruct the rest of the land. I went mostly by shape and what seemed to fit together other then piecing together all the lines. B) The process I took is similar to what Alfred Wegener thought because I looked at the map thinking what pieces were close to each other and looked like they fit and he thought they were too close to just be coincidently put there.

2. Because with only one pieces of evidence such an shape a lot of them would not of fit.. or would of taken a long time to fit together, so that’s why we used more then one piece of evidence to find the rest of the pieces without the other evidence.

3. a) North America might collide with eastern Asia and Russia.. b) The ecosystem would be badly damaged due to the cold temperatures in Russia that we would receive because we would be so close to them.


 * Conclusion **

In this activity I learned that all continents at one time fit together. And will eventually all collide with each other again, but not for millions of years. It’s weird to think that all these bodies of water that separate the continents today, at one time did not exists, and may not exists in the far future. I also learned that fossils, glacial deposits, matching folded mountains and coal deposits were all used to figure out that the earth was al once connected, and due to tectonic plates in approx. 2 million years the earth’s geography will change once again. _____________________________________________________________________________________________________________ 15)** //a)Composite Volancoe b)Rift Eruption c)Shield Volancoe//
 * __Check Your Understanding P.537__

12) Contiental Dirft theory. 13)
 * __P.538 #12-21__**