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Activity Title: Page 3 Title
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This page will probably be split into 2 pages eventually.
Perhaps one page for vector stuff and one for line stuff.
[I want to set this button so that it becomes visible, or active,
only after the user has clicked the "What's the hidden force?" button]
[Find another picture; with permissions]
[Find another picture; with permissions]
[Add some buttons to make this interactive. For example, user could change the charge to see the effect on the field. Or remove the charge altogether. ETC Potential Field Contour Plot does not update automatically as particles are moved around. Can this be done?]
[The 2D simulator needs to be updated to show longer vectors for stronger fields before the first
question can be interpreted correctly. Qian said this should be possible.]
1
org.concord.modeler.text.LineIcon750.03010105<html>
<head>
</head>
<body face="verdana">
<font size="5" color="white"><strong>Activity Title:</strong> Page 3 Title</font>
</body>
</html>
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org.concord.modeler.PageTextBox
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<html>
<head>
</head>
<body marginheight="0" background="topNavBarLeftMargin.jpg" marginwidth="0">
<table id="Table_01" cellpadding="0" cellspacing="0" border="0" width="100%">
<tr>
<td>
<img src="topNavBarLeftMargin.jpg" width="14" height="26">
<a href="page2.cml"><font><img src="prev.jpg" border="0" height="26" width="60">
</font></a><font><a href="page4.cml"><img src="next.jpg" border="0" height="26" width="59">
</a></font>
</td>
<td align="right">
<img src="page.jpg" width="54" height="26">
<a href="index.cml"><font><img src="index.jpg" border="0" height="26" width="46">
</font></a><font><a href="page1.cml"><img src="page1.jpg" border="0" height="26" width="28">
</a><a href="page2.cml"><img src="page2.jpg" border="0" height="26" width="28">
</a><a href="page3.cml"><img src="page3Selected.jpg" border="0" height="26" width="28">
</a><a href="page4.cml"><img src="page4.jpg" border="0" height="26" width="29">
</a><a href="page5.cml"><img src="page5.jpg" border="0" height="26" width="28">
</a><a href="page6.cml"><img src="page6.jpg" border="0" height="26" width="28">
</a></font><font><img src="topNavBarRightMargin.jpg" width="7" height="26">
</font> </td>
</tr>
</table>
</body>
</html>
false
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1
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1
20
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1
org.concord.modeler.text.LineIcon750.0105101015<html>
<head>
</head>
<body face="Verdana" marginheight="10">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td>
<img width="98" src="mainIdea.png" height="58">
</td>
<td>
<b>An introduction to fields:</b> There are many forces of nature
that we simply cannot see. Some cannot be seen even with specialized
equipment [Is this statement true?]. We only know they exist because
we see their effects. In order to help us deal with these invisible
forces we have devised a method of "visualizing" them.
</td>
</tr>
</table>
</body>
</html>
-231326
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1
20.0
1
org.concord.modeler.PageTextBox
750.0
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<html>
<head>
</head>
<body face="verdana" background="subHeadingBackground.png">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td>
<img width="33" src="bullet.png" height="23">
</td>
<td>
<font size="5" color="#5c7b67"><b>Fields: A Vector Approach </b></font>
</td>
</tr>
</table>
</body>
</html>
false
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20.0
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org.concord.mw2d.activity.AtomContainer
page3$0.mmlfalsefalse
org.concord.modeler.PageTextBox
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<html>
<head>
</head>
<body face="verdana" marginheight="10">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<color size="1" color="#5c7b67">
Notice how the direction of the vectors suggests the presence of
some hidden force in the middle of this model. Click on the button
below the model to find out what this hidden force is.
<p>
</p>
<p>
Now, go ahead and move the charged particle around and watch the
vectors move.
</p>
<p>
</p>
<p>
Finally click on the button to change the charge of the particle
and observe what happens to the vectors.
</p>
</td>
</tr>
</table>
</body>
</html>
false
20.0
org.concord.modeler.PageButton
What's the hidden force?
org.concord.mw2d.models.MolecularModel
0
Execute MW script
20.0
org.concord.modeler.PageButton
Change the Charge
org.concord.mw2d.models.MolecularModel
0
Execute MW script
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20.0
1
org.concord.modeler.PageTextBox
750.0
30.0
<html>
<head>
</head>
<body face="verdana" background="subHeadingBackground.png">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td>
<img width="33" src="bullet.png" height="23">
</td>
<td>
<font size="5" color="#5c7b67"><b>Fields: A Line Approach </b></font>
</td>
</tr>
</table>
</body>
</html>
false
20.0
1
org.concord.modeler.PageTextBox
750.0
240.0
<html>
<head>
</head>
<body face="verdana">
<table cellspacing="10" cellpadding="10" border="0">
<tr>
<td>
<img width="200" src="topography.gif" height="200">
</td>
<td>
<color size="1" color="#5c7b67">
<b>In a topographic map, lines close together indicate a large
altitude gradient - such as mountains and cliffs. Lines spaced far
apart indicate flat lands. </b>
</td>
</tr>
</table>
</body>
</html>
false
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1
20.0
1
org.concord.modeler.PageTextBox
750.0
240.0
<html>
<head>
</head>
<body face="verdana">
<table cellspacing="10" cellpadding="10" border="0">
<tr>
<td>
<img width="200" src="weather-map.jpg" height="200">
</td>
<td>
<color size="1" color="#5c7b67">
<b>In a weather map, lines close together indicate a large pressure
gradient - expect high winds. Lines spaced far apart indicate small
pressure gradients and mild winds. </b>
</td>
</tr>
</table>
</body>
</html>
false
20.0
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20.0
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20.0
1
org.concord.modeler.PageTextBox
750.0
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<html>
<head>
</head>
<body face="verdana">
<table cellspacing="10" cellpadding="10" border="0">
<tr>
<td>
<color size="1" color="#5c7b67">
<b>Charged particles create fields around themselves. And as in the
examples we just saw, lines close together suggest a large gradient.
For charged particles this gradient is a force gradient that acts on
other charged particles that enter their field. </b>
<p>
</p>
<p>
<b>Michael Faraday introduced the concept of the electric field in
the 19th century to aid in the visualization of these fields. His
method also allows us to make predictions about behavior within
these fields.</b>
</p>
</td>
</tr>
</table>
</body>
</html>
false
20.0
1
org.concord.modeler.PageMultipleChoice
true
4
371
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<html>
<head>
</head>
<body face="Arial" marginheight="5" marginwidth="5" bgcolor="rgb(230, 230, 230)">
<strong>Prediction: What would you predict if you placed 2 electrons on
the following model, one near the negative charge and one far away.</strong>
</body>
</html>
true
<html>Nothing. They would stay where you placed them.
<html>They would both move away at the same velocity.
<html>The near one would move away faster.
<html>The far one would move away faster.
2
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org.concord.modeler.PageTextBox
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<html>
<head>
</head>
<body face="verdana">
<table cellspacing="10" cellpadding="10" border="0">
<tr>
<td>
<color size="1" color="#5c7b67">
<font size="4"><b>Now click on the button to add two electrons and
observe what happens. Was your prediction correct?</b></font><font size="5">
</font>
</td>
</tr>
</table>
</body>
</html>
false
20.0
1
org.concord.modeler.PageButton
Add 2 electrons
org.concord.mw2d.models.MolecularModel
1
Execute MW script
20.0
1
org.concord.mw2d.activity.AtomContainer
page3$1.mmlfalsefalsetrue
20.0
1
org.concord.modeler.PageButton
Run
org.concord.mw2d.models.MolecularModel
1
Execute MW script
20.0
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20.0
1
20.0
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20.0
1
org.concord.modeler.text.LineIcon750.0150101015<html>
<head>
</head>
<body face="Verdana" marginheight="10">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td>
<img width="98" src="mainIdea.png" height="58">
</td>
<td>
<b>Introduction to Electric Fields:</b> Electric fields can be
created in one of two ways: they can be the result of a charged
particle, or they can result from the movement of magnetic fields. A
field is a representation of the forces that a charged particle
would feel if it was in proximity of the field.
</td>
</tr>
</table>
</body>
</html>
-231326
20.0
1
org.concord.modeler.PageTextBox
750.0
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<html>
<head>
</head>
<body face="verdana" background="subHeadingBackground.png">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td>
<img width="33" src="bullet.png" height="23">
</td>
<td>
<font size="5" color="#5c7b67"><b>Gravitational fields: An analogy </b></font>
</td>
</tr>
</table>
</body>
</html>
false
20.0
1
org.concord.modeler.PageTextBox
750.0
370.0
<html>
<head>
</head>
<body face="verdana">
<table cellspacing="10" cellpadding="10" border="0">
<tr>
<td>
<img width="320" src="earth_vector.jpg" height="300">
</td>
<td>
<color size="1" color="#5c7b67">
<b>Most of us are much more familiar with gravitational fields than
we are with electric or magnetic fields. As shown in this image the
gravitational field always points towards the center of the earth.
That is, your body always feels a net force pulling you towards the
center of the earth. The arrows shown indicate the direction and
magnitude of the force. Note that the direction is always toward the
center of the earth. However, the magnitude increases the closer you
get to the earth. This would be represented by longer arrows in this
figure as you moved closer to the earth and shorter arrows as you
move away from the earth. </b>
</td>
</tr>
</table>
</body>
</html>
false
20.0
1
20.0
1
org.concord.modeler.PageTextBox
400.0
250.0
<html>
<head>
</head>
<body face="verdana">
<table cellspacing="10" cellpadding="10" border="0">
<tr>
<td>
<color size="1" color="#5c7b67">
<b>Similarly, charged particles can alter the surrounding space.
Electric fields are used to visualize this space. However, electric
fields differ from gravitational fields in that the vectors (the
direction and magnitude of the electrostatic force) is away from
positive charges and into negative charges as shown in the next
figure.</b>
</td>
</tr>
</table>
</body>
</html>
false
20.0
1
20.0
1
org.concord.modeler.PageTextBox
750.0
30.0
<html>
<head>
</head>
<body face="verdana" background="subHeadingBackground.png">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td>
<img width="33" src="bullet.png" height="23">
</td>
<td>
<font size="5" color="#5c7b67"><b>Models of field lines and vector
spaces</b></font>
</td>
</tr>
</table>
</body>
</html>
false
20.0
1
org.concord.modeler.PageTextBox
750.0
370.0
<html>
<head>
</head>
<body face="verdana">
<table cellspacing="10" cellpadding="10" border="0">
<tr>
<td>
<img width="300" src="field_lines.jpg" height="300">
</td>
<td>
<color size="1" color="#5c7b67">
<b>Vectors and field lines are just different ways of representing
the same thing.</b>
</td>
</tr>
</table>
</body>
</html>
false
20.0
1
field_lines.JPG
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1
20.0
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org.concord.modeler.PageTextBox
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<html>
<head>
</head>
<body face="verdana" background="subHeadingBackground.png">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td>
<img width="33" src="bullet.png" height="23">
</td>
<td>
<font size="5" color="#5c7b67"><b>Heading </b></font>
</td>
</tr>
</table>
</body>
</html>
false
1
1
org.concord.modeler.PageMultipleChoice
true
4
371
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<html>
<head>
</head>
<body face="Arial" marginheight="5" marginwidth="5" bgcolor="rgb(230, 230, 230)">
<strong>Based on your explorations above, which of the following is false?</strong>
</body>
</html>
true
<html>Electric field vectors point away from positive charges.
<html>Electric field vectors point toward negative charges.
<html>Electric field vectors are longer close to the source of the charge.
<html>Electric field vectors are shorter close to the source of the charge.
3
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org.concord.modeler.PageTextArea
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<html>
<head>
</head>
<body face="Arial" marginheight="5" marginwidth="5" bgcolor="rgb(230, 230, 230)">
<strong>Question title</strong>
</body>
</html>
false
Line
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org.concord.modeler.ImageQuestion372300<html>
<head>
</head>
<body face="Arial" marginheight="5" marginwidth="5" bgcolor="rgb(230, 230, 230)">
<b>Question title</b>
</body>
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false
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org.concord.modeler.ImageQuestion372300<html>
<head>
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<body face="Arial" marginheight="5" marginwidth="5" bgcolor="rgb(230, 230, 230)">
<b>Question title</b>
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<html>
<head>
</head>
<body marginheight="0" background="topNavBarLeftMargin.jpg" marginwidth="0">
<table id="Table_01" cellpadding="0" cellspacing="0" border="0" width="100%">
<tr>
<td>
<img src="topNavBarLeftMargin.jpg" width="14" height="26">
<a href="page2.cml"><font><img src="prev.jpg" border="0" height="26" width="60">
</font></a><font><a href="page4.cml"><img src="next.jpg" border="0" height="26" width="59">
</a></font>
</td>
<td align="right">
<img src="page.jpg" width="54" height="26">
<a href="index.cml"><font><img src="index.jpg" border="0" height="26" width="46">
</font></a><font><a href="page1.cml"><img src="page1.jpg" border="0" height="26" width="28">
</a><a href="page2.cml"><img src="page2.jpg" border="0" height="26" width="28">
</a><a href="page3.cml"><img src="page3Selected.jpg" border="0" height="26" width="28">
</a><a href="page4.cml"><img src="page4.jpg" border="0" height="26" width="29">
</a><a href="page5.cml"><img src="page5.jpg" border="0" height="26" width="28">
</a><a href="page6.cml"><img src="page6.jpg" border="0" height="26" width="28">
</a></font><font><img src="topNavBarRightMargin.jpg" width="7" height="26">
</font> </td>
</tr>
</table>
</body>
</html>
false
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