SCAVENGER HUNT
Scavenger Hunt Questions:
1. What are electrons?
2. What is a cathode ray tube?
3. Why did Thomson concluded that the cathode rays are negatively charge?
4. Describe and illustrate Sir Joseph John Thomson’s model of an atom
Search Engine: http://www.yahoo.com
Keyword(s) or Phrases used to conduct search:
1. Atom
2.Charge particles
3. Sir Joseph John Thomson
4. Cathode rays
5. Atom Model
Address and brief description of site visited:
1. URL: http://en.wikipedia.org/wiki/Electron
Description:
This site gives information on electron’s charge and mass. It also discusses about the discovery of the electron.
2. URL: http://en.wikipedia.org/wiki/Joseph_John_Thomson
Description:
This site provides a short biography of J.J. Thomson and his work on cathode rays.
3. URL: http://en.wikipedia.org/wiki/Plum_pudding_model
Description:
This site discusses and illustrates J.J. Thomson’s model of an atom.
4. URL: http://en.wikipedia.org/wiki/Cathode_ray
Description:
This site describes a cathode ray tube. It also gives historical information and applications of cathode ray tubes.
5. URL: http://web.lemoyne.edu/~giunta/jthomson.html
Description:
This site tells about Thomson’s experiment with the cathode rays and how the charges of the rays were discovered.
3 comments:
1. The electron is a fundamental subatomic particle that carries a negative electric charge
2.Cathode rays are streams of electrons observed in vacuum tubes.
3.Thomson's conclusions were bold: cathode rays were indeed made of particles which he called "corpuscles", and these corpuscles came from within the atoms of the electrodes themselves, meaning they were in fact divisible. Thomson imagined the atom as being made up of these corpuscles swarming in a sea of positive charge; this was his plum pudding model.
4.The plum pudding model of the atom was proposed by J. J. Thomson, the discoverer of the electron.In this model, the atom is composed of electrons (which Thomson still called "corpuscles," though G.J. Stoney had proposed that atoms of electricity be called electrons in 1894). The plum pudding model of the atom — negative charges (electrons) embedded in a larger structure of positive charge.
In Thomson's mathematical model the "corpuscles" (or modern electrons) were arranged non-randomly, in rotating rings.
sarah marie tabaculde ZSNHZ
from IV-oriole.
1.The electron is a fundamental subatomic particle that carries a negative electric charge. It is a spin-½ lepton that participates in electromagnetic interactions, its mass is approximately 1 / 1836 of the proton..
for d nxt time...
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