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Chemie in het vierde jaar : Startpagina
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Deze website is een startpagina voor leerlingen met links naar oefeningen en video's die aansluiten bij de leerstof. Deze website wordt geleidelijk aangevuld.


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Warm Fronts
Video shows how warm fronts are shown on weather maps and what warm fronts are. The video also includes the cloud types that are seen before a warm front occurs, the temperature changes, the wind changes, and the air pressure changes. Video gives all basic information needed to understand warm fronts. Video is of good quality and appropriate for elementary age students, especially for students who are studying weather in science.
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NCL-Chinese Read into China -grammar -lesson 5
NCL-Chinese Read into China -grammar -lesson 5.
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Protestant Reformation
This video describes the causes of the Protestant Reformation. backround knowledge is explained in regards to key individuals involved as well.
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Conclusion

The theme of this course has been the impact that information and communication technologies have had on the news industry. I introduced this theme with a short historical overview of technology in the news industry followed by a look at how technology is used for newsgathering.

We have been looking in some detail at aspects of the underlying technologies used in newsgathering, including the basic components of digital camcorders and the methods of signal transmission over wires. We hav
Author(s): The Open University

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Work
A circus strongman and a clown help present the physics definition of work. Concept: Work = force x distance. Eureka was a series of short cartoons on physics that ran on public television in the 1980's.  The video explains the concept in simple and well illustrated way.  Good for students of any elementary school level. 
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1.5 Obesity

At the time of writing (2004) 20% of the adult population of the UK is classified as obese. The number of obese children has doubled since 1982, 10% of six year olds and 17% of fifteen year olds are now classified as obese. As shown in Table 4, obesity is recognized when the BMI exceeds 30 and occurs quite simply wh
Author(s): The Open University

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Symbiosis by StudyJams
Symbiosis describes a relationship between two organisms in an environment.  There are three main types of relationships:  mutualism, parasitism, and commensalism.  Learn more about symbiosis with this cartoon animation from StudyJams.  A short, self-checking quiz is also included with this link.
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Statistical Mechanics
Elements of the classical and quantum statistics, the partition function, ideal Fermi gas, ideal Bose gas, Ising model and some applications of statistical mechanics.
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1 International human rights: an introduction

There are many examples of claims for rights in the international sphere.

One example was reported in September 2002. The British government was asked to make efforts to have a British man held by the Americans at Guantanamo Bay deported to Britain to face charges of terrorism there in connection with the attacks on 11 September 2001. Concerns were expressed about the denial of this man's human rights at Guantanamo Bay. Are alleged terrorists entitled to human rights? Can the denial of
Author(s): The Open University

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Personal Computer Mouse Care & Cleaning Tips
Watch an expert demonstrate some great tips on cleaning the computer's mouse in this free how-to video on cleaning personal electronics.  This video shows how to clean both types.
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The Ante-Bellum Period: A Nation Divided: The American Civil War
A short selection from a documentary about the Antebellum Period.  This video shows footage and information about the period before the U.S. Civil War. There were over 3 million slaves doing the labor in the South.  (02:00)
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Babbage: Elevated intelligence
Google launches a handful of hardware to deliver its artificial intelligence. We speak to Professor Chris Phillips about this year's Nobel prize for physics, and research analyst Alberto Noel discusses how machine learning is enhancing factory automation and what the global implications are in the world of work
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Becoming the Best: Excellent Customer Service Always Wins
If you build a customer-centric business, the money will come. That’s the message in a new book by Horst Schulze, co-founder of luxury hotel chain The Ritz-Carlton.
Author(s): Knowledge@Wharton

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1.1 Composition and improvisation in the world's musics

I want to begin with some general issues. Since the words composition and improvisation will play an important role in this chapter, where better to start than with definitions of these two terms?

Activity 1

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6.5 Do our answers depend on who the groups are?

Finally, perhaps our intuition about how to deal democratically with country Y depends on who we think the As, Bs and Cs are. Consider three possibilities:

  • (i) A is the UK, B is Scotland, C is the Shetland Islands

  • (ii) A is the EU, B is the UK, C is Scotland

  • (iii) A is a world government, B is the EU, C is France.

Does your intuition about the rights of communities A, B and C shift from case to case? If s
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#386: Global warming's companion crisis: Reactive nitrogen and its threat to human and planetary hea

Environmental physicist Prof Mark Sutton explains how our fast growing "nitrogen footprint" from agriculture and industry is reaching crisis levels as reactive nitrogen pollutes our air and soil and is a direct threat to human health. A leading researcher and advisor on nitrogen policy, Prof Sutton argues that smarter nitrogen management is not
Author(s): up-close@unimelb.edu.au (University of Melbourne)

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7.7 Physical hazards

In any laboratory, potential hazards arise from the use of electrical equipment. The legal requirements relating to the use and maintenance of such equipment are contained in the ‘Electricity at Work Regulations 1989’ (EAW). The regulations require certain safety objectives to be achieved but do not prescribe in detail the measures to be taken. Instead, precautions should be selected appropriate to risk depending on particular work activities.

‘Portable’ electrical equipment –
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1.3.4 Hormonal control of sperm production

The most important hormone involved in controlling sperm production is a steroid called testosterone. This is produced in the testis itself, by the Leydig cells (see Figure 12a). The testosterone is released from the Leydig cells between the tubules, and taken up by the neighbouring Sertoli cells. The Leydig cells are stimulated to make testosterone by two other hormones, luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which are both produced by the pituitary gland and
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Occupation-based Community Development Framework

Authors: 
Roshan Galvaan and Liesl Peters