As you know our theme for the year is "Turning Points." I want you to pick a turning point in science history and describe how the scientific method was used in this discovery. How many times did they have to go through the method? How was the method modified for this discovery? What kind of other influences interfered with the discovery (i.e. politics, sexism, etc.)?
One turning point in science history that I remember from 2nd grade was when Madame Curie found radioactivity. The scientific method was used because POHTS= The problem was that no one knew where radioactivity came from. Observation was that she had to observe the radium closely in order to understand it. Her hypothesis was that the radium was not yet discovered, so she researched and was exposed to it. She tested her hypothesis by researching and observing and working on the radium. In the end, her solution was that she discovered that radioactivity came from radium!!!!! The only thing that interfered with this was that it is deathly if you are exposed to it, so she died at the end.
mr. Casey
9/10/2012 08:09:09 am
Excellent work Ashdon! Great example, and well explained.
Samantha Bodger
9/10/2012 10:35:31 am
One turning point in science is the atomic theory, which began as philosophical concept in ancient Greece and India and was introduced into science in the early 19th century when matter was looked at as if it was actually made of particles!!! No wonder! The scientific theory was used in this way (POHTS)- P= Everybody was starting to advance in the scientific field and people started wondering if matter was really a compound of a bunch of tiny particles, O=They had to observe all matter very closely to identify the atoms. The word atom originated from the ancient Greek adjective atomos, 'indivisible'. H- John Dalton's atom theory remained controversial throughout the 19th century. While the law of definite proportion was accepted, the hypothesis that this was due to atoms was not so widely accepted. T= Many scientists tested this theory by using microscopes and looking closely at objects in everyday life S=Many scientists studied this subject and came up with the answer that one tin atom will combine with either one or two oxygen atoms. Dalton also believed that the atomic theory could explain why water absorbed different gases in different proportions. Long explanation, huh?
Mr. Casey
9/11/2012 02:18:40 am
Nice addition. We'll be learning about Dalton this year. You've given us a head start!
matthew engelhardt
9/11/2012 12:06:58 pm
MY NAME IS MATTHEW
Lisa Robertson
9/10/2012 12:56:31 pm
I think a major turning point in history was the lightbulb.He did not use the scientific theory, he used the Trial and error discovery.His method was to invent systems rather than components of systems. He did not just invent a light bulb, he invented an economically successful system of lighting including its generators, cables, metering, etc.
dakota
9/12/2012 08:06:15 am
i agree with you on this the light bulb was a major turning point in history
Lisa Robertson
9/10/2012 12:57:49 pm
I hope that is what you were looking for!
Mr. Casey
9/11/2012 02:19:36 am
This is exactly what we're looking for! Can you add some of the other details I was asking for?
Lisa Robertson
9/11/2012 07:29:55 am
His first successful test was on October 22, 1879. It lasted 13.5 hours. He also did many other tests with other metal filaments than the one he used.
Stevens, Anthony. Period 4
9/11/2012 09:14:01 am
In 1869 they came out with the first periodic table. At the time, the elements that they had found were known to be found in three states. A Gas, a liquid, or a solid. But that all changed when Demetre Evonovitch (I think that's how you spell his name) made a huge discovery. He wrote the 65 known elements on cards with barotomic weights. He shuffled them around putting them in rows with similar propertys. What he found was a pattern. He found a repitition of propertys that became known as the periodic table. But he had gaps in it. He predicted what the propertys would be and time proved him correct.
Stevens, Anthony
9/11/2012 09:16:27 am
He went through this process hundreds of times and still kept getting the same answer.
Cory
9/12/2012 09:36:33 am
Thats good info
Daniela
9/12/2012 01:49:23 pm
One of the turning point of science history was when Galileo proved Copernicus theory was correct. Galileo used homemade telescope to prove the planets revolve around the sun.Newton continued Galileo and Copernicus work, by using mathematics to describe gravity that the force was keeping the planets revolving around the sun. When Galileo told the Catholic church that planets revolve around the sun instead of the earth. They said that he was wrong and put him in jail because they thought he didn't believed in god. They arrested him till he died old.
Mr. Casey
9/13/2012 07:43:49 am
This is good work Daniela, but without a last name and period I can't give you your extra credit!
Darcy
9/15/2012 06:13:03 am
Invention of Dynamite! Dynamite is made with Nitroglycerin but impure nitroglycerin could blow up at anytime so another guy fixed it so it could be used to blasting through rocks in mining. The weird this is that nitroglycerin is used for chest pain and other medical uses
Carson Bolter
9/15/2012 06:20:14 am
I think the Invention of gunpowder forever changed the science of warfare because it radically changed how wars were fought. before gunpowder, armies were armed with melee weapons such as spears and swords, with gunpowder weapons, enemies could be engaged and large distances and forever changed tactics and strategies of warfare.
Danielle Gomez
9/23/2012 01:43:18 pm
haha i just wanted to post something lalalaal ok done!
Mr. Casey
9/24/2012 12:11:17 am
You are a BIG goober! :) ...come visit Comments are closed.
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