Mass Energy equivalence Thursday, April 23, 2015

Unit 10: Atomic Physics Thursday, 4/23  Pick up a handout from the Physics bin and…  Read the handout  Complete the last section of your atom and radioactivity notes Upcoming dates:  Monday, 4/27 – open note atomic physics quiz (note: I will not accept any late work related to atomic physics after the quiz has been taken)  Tuesday, 5/12 – Rube Goldberg presentations (project is a test grade)  Friday, 5/22 – Last day to turn in 6SW extra credit  Wednesday, 5/27 – Bottle rocket launch (project is a test grade)  Tuesday, 6/2 – 4 th period final exam (11:25 to 12:45)  Wednesday, 6/3 – 2 nd period final exam (10:00 to 11:20)

Modern Physics and Society  We will watch the video as a class  As we watch the video, complete the guiding questions

Movie Questions 1. What was the name of scientist who approached Einstein at the beginning of the movie? Leo Szilard 2. Why did he approach Einstein? He was worried that the Nazis would be able to create a nuclear weapon and in the hands of Hitler could be devastating. He wanted Einstein to write a letter to Franklin Roosevelt in an effort to get the Americans to create a nuclear weapon before the Nazis. 3. What was the societal impact of the letter they wrote? The birth of the Manhattan Project – the creation of a nuclear weapon. Used against the Japanese. 4. What do you think the world would be like if the letter was never written? 5. Why did Einstein initially believe his famous equation was theoretical and would never have a practical use? When the equation was originally created it took more energy to unleash the mass than the actual energy realized. 6. In the movie they discuss the concept of fission and the use of neutrons to accomplish fission. How did this impact the creation of nuclear weapons? Using neutrons to split up a nucleus to cause a chain reaction. This process required minimal energy (compared to output) to convert mass to energy.

Philosophical Chair The scientist’s responsibility to society is different from that of other citizens. Explain how this statement might be true. (California Institute of Technology college essay writing prompt) Do you agree or disagree?

Philosophical Chairs  “An organized dialogue between people to actively engage in constructive dialogue with one another” What is Philosophical Chairs?

Classroom Set Up Class is divided into like positions on the topic Ex: The scientist’s responsibility to society is different from that of other citizens.. Class is divided into like positions on the topic Ex: The scientist’s responsibility to society is different from that of other citizens.

The Mediator Remains neutral Calls on sides to speak May paraphrase arguments made by each side for clarification Ensures participation by as many students as possible The Mediator’s role

Rules of Engagement  Understand the statement and choose a side.  Listen carefully when others speak and seek to understand their argument even if you don’t agree.  Wait for the mediator to recognize you before you speak; only one person speaks at a time.  You must first summarize briefly the previous speaker’s arguments before you make your response. Rules of Engagement

 Be sure that when you speak, you address the ideas, not the person stating them.  Keep an open mind and move to the other side or the undecided section if you feel that someone made a good argument or your opinion is swayed.  Support the mediator by maintaining order and by NOT dominating the Philosophical Chairs debate. Rules of Engagement

Philosophical Chair