What Keeps Us Together When We Want To Be Apart? Task Chemistry Standard Internet Resources Questions Evaluation Conclusion   Introduction Since ancient times, humankind has wondered what makes up the world around us. A little over 100 different atoms make up everything you see around you. In this activity, you will learn about the forces that hold the nucleus of these atoms together. The Task The Task To understand the forces that hold the nucleus together, you will visit different Web Sites and answer questions to demostrate your understanding of this concept. Chemistry Standard Back to the top of the Page   The California Chemistry Content Standard 11.Nuclear processes are those in which an atomic nucleus changes, including radioactive decay of naturally occurring and human-made isotopes,nuclear fission,and nuclear fusion.As a basis for understanding this concept:   a.Students know protons and neutrons in the nucleus are held together by nuclear forces that overcome the electromagnetic repulsion between the protons. Internet Resources Back to the top of the Page   Internet Resources   Forces Four Forces with Spanish Translation GCSE Physics:Forces Atoms & Subatomic Particles Atomic Structure

American Nuclear Society

Electrical Charge Repulsion

	Electrical Charges
	Atoms and Static Electricity
	British Broadcasting Company Electrostatics Animation

Nuclear Strong Force and the Standard Model

	From Atoms To The Standard Model
	Atoms: The Inside Story (Standard Model)
	Standard Model of Particle Physics

 

Questions

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Questions

 

What is a force?
 
What are the four forces that govern interactions in the universe?
 
Which of these four forces is the strongest?
 
What is an atom?
 
What is the nucleus of an atom?
 
What subatomic particles are in the nucleus of the atom?
 
What are the electrical charges of each subatomic particle in the nucleus?
 
Is there a electrostatic attraction or repulsion between these subatomic particles?
 
What force keeps the subatomic particles in the nucleus together?

Analysis Question

 

How is the nuclear strong force (interaction) represented in the EdCenter's Nuclear Strong Force Battery Animation ?
   

EdCenter's Nuclear Strong Force Battery Animation

If You Finish Early

 

What is meant by the Standard Model of Particle Physics?
 

Evaluation

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Evaluation

Scoring Guide For Nuclear Forces Project

Each student will be graded on their own efforts according to the following:

Advanced	Proficient	Basic	Below Basic	Far Below Basic
Mastery of the problem presented in the project	Strong understanding of the problem presented in the project	Basic understanding of the problem presented in the project	Limited attempt to solve problem presented in the project	Minimal attempt to solve problem presented in the project
Excellence in written expression	Written expression is very good	Written expression indicates basic communication skills	Errors in presentation limit effective communication	Gross errors in presentation prohibit effective communication
All aspects of the task are thoroughly and thoughtfully completed.	All aspects of the task are thoroughly completed.	All aspects of task are completed but some may be incorrect	Aspects of task are incomplete	Aspects of task are missing
Presentation is error free.	Presentation contains few errors.	Presentation contains some errors	Presentation contains multiple errors	Presentation is poor
All deadlines are met.	All deadlines are met.	All deadlines are met	Some deadlines are met.	Most deadlines are not met.

Conclusion

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Conclusion

As you gaze into the night sky, it can easily be imagined that the universe is infinitely large. Is it not unreasonable to imagine that the universe can at the same time be infinitely small?

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Last updated August 17, 2005

by rnorth

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