AY Honors/Bubbles/Answer Key - Revision history

Jomegat: Add a better formula (yes, I tried it)

2025-09-19T22:59:06Z

Add a better formula (yes, I tried it)

Jomegat at 10:18, 22 July 2023

2023-07-22T10:18:55Z

W126jep at 21:13, 1 January 2023

2023-01-01T21:13:03Z

W126jep at 19:03, 4 October 2021

2021-10-04T19:03:47Z

W126jep at 22:50, 27 May 2021

2021-05-27T22:50:01Z

W126jep: Marked this version for translation

2021-04-05T08:22:48Z

Marked this version for translation

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W126jep at 08:22, 5 April 2021

2021-04-05T08:22:00Z

Jomegat bot: Bot: Automated import of articles * existing text overwritten *

2021-03-19T01:45:15Z

Bot: Automated import of articles *** existing text overwritten ***

Jomegat bot: Bot: Automated import of articles * existing text overwritten *

2020-12-25T19:26:54Z

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Jomegat bot: Jomegat bot moved page Adventist Youth Honors Answer Book/Nature/Bubbles to AY Honors/Bubbles/Answer Key: Bot: Moved page

2020-12-19T15:03:42Z

Jomegat bot moved page AY Honor Bubbles to AY Honor Bubbles Answer Key: Bot: Moved page

@@ Line 251: / Line 251: @@
 '''Glycerin''' This is the secret ingredient that gives a bubble its extra strength.
-====Formula # 1==== <!--T:37-->
+====Formula # 1====
-*2/3 cup (150 ml) Dawn dishwashing soap
+*1/2 gallon (2 liters) water
 *1 gallon (4 liters) water
 *2 to 3 tablespoons (30-45 ml) of glycerin (available at the pharmacy or chemical supply house.)
-====Formula #2==== <!--T:38-->
+====Formula #3==== <!--T:38-->
 * 1 cup (250ml) dish soap
 * 14 cups 3.4 liters) water

@@ Line 127: / Line 127: @@
 <noinclude><translate></noinclude>
 ====Experiment #1 Float a Paper Clip==== <!--T:81-->
-*Gently place a DRY paper clip flat onto a small piece of paper towel or use a bend paper clip in an “L” shape.
+*Gently place a DRY paper clip flat onto a small piece of paper towel or use a paper clip bent into an “L” shape.
 *Slowly lower the paper into the water.
 *Remove the paper from under the paper clip.

@@ Line 1: / Line 1: @@
 {{HonorSubpage}}
 <section begin="Body" />
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 <noinclude><translate><!--T:57-->
@@ Line 346: / Line 346: @@
 [[Category:Instructor Required{{GetLangSuffix}}|{{SUBPAGENAME}}]]
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 <noinclude><translate></noinclude>
 ==References== <!--T:55-->
 <noinclude></translate></noinclude>
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@@ Line 48: / Line 48: @@
 </noinclude>
 Low humidity equals low life of a bubble. Higher humidity is the key. Even ordinary solutions will perform better in high humidity. Humidity is even more important than temperature, though cold air tends to be less humid than warm air.
-Good Conditions:  60% and higher humidity.
+Good Conditions: 60% and higher humidity.
 <!--T:67-->
@@ Line 100: / Line 100: @@
 <!-- 4. List safety rules about bubble blowing. -->
 *Soap solution will sting your eyes- avoid getting it in your eyes.
-*Soap Solution is very Slippery-  areas might still be slippery long after you are gone, so clean up any spills
+*Soap Solution is very Slippery- areas might still be slippery long after you are gone, so clean up any spills
 *Never make bubbles near moving traffic.
 *Soap solution can damage grass- dilute with water when finished.
@@ Line 126: / Line 126: @@
 {{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=5b}} <!--T:13-->
 <noinclude><translate></noinclude>
-====Experiment #1  Float a Paper Clip==== <!--T:81-->
+====Experiment #1 Float a Paper Clip==== <!--T:81-->
 *Gently place a DRY paper clip flat onto a small piece of paper towel or use a bend paper clip in an “L” shape.
 *Slowly lower the paper into the water.
@@ Line 155: / Line 155: @@
 Possible Variant: Perform this experiment with identical glasses, but use different types of coins in each glass. Use the results of how many can go in to determine a ratio of the volumes of different coins
-====Experiment #3  Floating Needle==== <!--T:21-->
+====Experiment #3 Floating Needle==== <!--T:21-->
 Another nice surface tension trick, this one makes it so that a needle will float on the surface of a glass of water. There are two variants of this trick, both impressive in their own right.
@@ Line 243: / Line 243: @@
 <noinclude><translate><!--T:95-->
 </noinclude>
-'''Water'''  Use good quality water that does not contain high levels of iron or minerals.
+'''Water''' Use good quality water that does not contain high levels of iron or minerals.
 <!--T:35-->
@@ Line 298: / Line 298: @@
 <!--T:44-->
-Interference   All waves including light, have a curious property. If two waves combine, the waves meet each other crest to crest, adding up and reinforcing the effect of each other or they can meet crest to trough canceling each other out so that they have no effect.
+Interference: All waves including light, have a curious property. If two waves combine, the waves meet each other crest to crest, adding up and reinforcing the effect of each other or they can meet crest to trough canceling each other out so that they have no effect.
 <!--T:45-->

@@ Line 37: / Line 37: @@
 {{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2a}}
 <noinclude><translate></noinclude>
-Low humidity equals low life of a bubble.  Higher humidity is the key.  Even ordinary solutions will perform better in high humidity.  Humidity is even more important than temperature, though cold air tends to be less humid than warm air.
+Low humidity equals low life of a bubble. Higher humidity is the key. Even ordinary solutions will perform better in high humidity. Humidity is even more important than temperature, though cold air tends to be less humid than warm air.
 Good Conditions:  60% and higher humidity.
@@ Line 44: / Line 44: @@
 {{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2b}} <!--T:5-->
 <noinclude><translate></noinclude>
-When you increase the temperature of a bubble solution, the molecules in the liquid and the gas inside the bubble are moving more quickly.  This can cause the solution to thin faster.  Also the film that forms the bubble will evaporate more quickly, causing it to pop.
+When you increase the temperature of a bubble solution, the molecules in the liquid and the gas inside the bubble are moving more quickly. This can cause the solution to thin faster. Also the film that forms the bubble will evaporate more quickly, causing it to pop.
 <noinclude></translate></noinclude>
@@ Line 50: / Line 50: @@
 {{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2c}} <!--T:6-->
 <noinclude><translate></noinclude>
-More wind puts a stain on the bubble and dries out the bubble.  The main effect of wind is pretty simple and obvious: it puts a mechanical strain on the bubble and is likely to burst it.
+More wind puts a stain on the bubble and dries out the bubble. The main effect of wind is pretty simple and obvious: it puts a mechanical strain on the bubble and is likely to burst it.
 <!--T:7-->
@@ Line 59: / Line 59: @@
 {{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=2d}} <!--T:8-->
 <noinclude><translate></noinclude>
-Hail is totally destructive of bubbles, as is heavy rain.  Gentle rain will make a thick raft of bubbles thin down, by diluting and draining the soap solution from the top layers.
+Hail is totally destructive of bubbles, as is heavy rain. Gentle rain will make a thick raft of bubbles thin down, by diluting and draining the soap solution from the top layers.
 <noinclude></translate></noinclude>
@@ Line 66: / Line 66: @@
 {{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=3}}
 <noinclude><translate></noinclude>
-<!-- 3. Make a model or drawing of a soap molecule.  Show why the molecule is either Hydrophilic or Hydrophobic. -->
+<!-- 3. Make a model or drawing of a soap molecule. Show why the molecule is either Hydrophilic or Hydrophobic. -->
 [[File:Soap_molecule.png|400px|left|thumb|Soap molecule]]
 [[File:Soap bubble.png|300px|right|thumb|Soap molecules forming a bubble]]
-A soap molecule has a hydrophobic end and a hydrophilic end.  In other words, it is both hydrophilic ''and'' hydrophobic, and because of this, it corrals water, separating it from the air as shown here.
+A soap molecule has a hydrophobic end and a hydrophilic end. In other words, it is both hydrophilic ''and'' hydrophobic, and because of this, it corrals water, separating it from the air as shown here.
 <!--T:10-->
@@ Line 94: / Line 94: @@
 <noinclude><translate></noinclude>
 Surface Tension is the property of the surface of a liquid that allows it to resist an external force.
 When you blow a soap bubble, you are creating a pressurized bubble of air which is contained within a thin, elastic surface of liquid.
 In a soap-and-water solution the hydrophobic ends of the soap molecule do not want to be in the liquid at all so they find their way to the surface and push their hydrophobic ends out of the water. This separates the water molecules from each other.
 Since the surface tension forces become smaller as the distance between water molecules increases, the intervening soap molecules decrease the surface tension.
@@ Line 103: / Line 103: @@
 <noinclude><translate></noinclude>
 ====Experiment #1  Float a Paper Clip====
 *Gently place a DRY paper clip flat onto a small piece of paper towel or use a bend paper clip in an “L” shape.
 *Slowly lower the paper into the water.
 *Remove the paper from under the paper clip.
 *Add some soap water to the clear water.
 *What Happens?
 ====Experiment #2==== <!--T:14-->
 This is a neat trick! Ask friends how many quarters can go in a completely full glass of water before it overflows. The answer will generally be one or two. Then follow the steps below to prove them wrong.
 <!--T:15-->
@@ Line 132: / Line 132: @@
 ====Experiment #3  Floating Needle==== <!--T:21-->
 Another nice surface tension trick, this one makes it so that a needle will float on the surface of a glass of water. There are two variants of this trick, both impressive in their own right.
 <!--T:22-->
@@ Line 145: / Line 145: @@
 <!--T:24-->
 Place the needle on the fork, gently lowering it into the glass of water. Carefully pull the fork out, and it is possible to leave the needle floating on the surface of the water.
 <!--T:25-->
 This trick requires a real steady hand and some practice, because you must remove the fork in such a way that portions of the needle do not get wet ... or the needle will sink. You can rub the needle between your fingers beforehand to "oil" it increase your success chances.
 <!--T:26-->
@@ Line 154: / Line 154: @@
 <!--T:27-->
 Place the sewing needle on a small piece of tissue paper (large enough to hold the needle). The needle is placed on the tissue paper. The tissue paper will become soaked with water and sink to the bottom of the glass, leaving the needle floating on the surface.
@@ Line 247: / Line 247: @@
 <!--T:42-->
 Similar to the way we perceive the colors in a rainbow or an oil slick, we see the colors in a bubble through the reflection of interfered light waves off the inner and outer surfaces of the bubble wall.
 <!--T:43-->
-White light is made up of all colors, all wavelengths.  If one of these colors is subtracted from white light (by interference, for example) we see the complementary color.
+White light is made up of all colors, all wavelengths. If one of these colors is subtracted from white light (by interference, for example) we see the complementary color.
 <!--T:44-->
-Interference   All waves including light, have a curious property.  If two waves combine, the waves meet each other crest to crest, adding up and reinforcing the effect of each other or they can meet crest to trough canceling each other out so that they have no effect.
+Interference   All waves including light, have a curious property. If two waves combine, the waves meet each other crest to crest, adding up and reinforcing the effect of each other or they can meet crest to trough canceling each other out so that they have no effect.
 <!--T:45-->
 [[File:Interference of two waves.svg|250px]]
 {{clear}}
-Constructive interference is when two waves are in phase.  The waves come together and make a bigger wave.
+Constructive interference is when two waves are in phase. The waves come together and make a bigger wave.
 <!--T:46-->
@@ Line 264: / Line 264: @@
 <!--T:47-->
 If we were to look at a highly magnified portion of a soap bubble membrane, we would notice that light reflects off both the front (outside) and rear (inside) surfaces of the bubble. But the ray of light that reflects off the inside surface travels a longer distance than the ray which reflects from the outside surface.
 <!--T:48-->
-When the rays recombine they get “out of phase” with each other and interfere.  Given a certain thickness of the bubble wall, a certain wavelength will be canceled and its complementary color will be seen.
+When the rays recombine they get “out of phase” with each other and interfere. Given a certain thickness of the bubble wall, a certain wavelength will be canceled and its complementary color will be seen.
 <!--T:49-->
@@ Line 276: / Line 276: @@
 {{ansreq|page={{#titleparts:{{PAGENAME}}|2|1}}|num=8c}} <!--T:50-->
 <noinclude><translate></noinclude>
-Soap bubbles will assume the shape of least surface area possible containing a given volume.  No matter what shape a bubble has initially, it will try to become a sphere.  The sphere is the shape that minimizes the surface area of the structure, which makes it the shape that requires minimum energy to achieve.
+Soap bubbles will assume the shape of least surface area possible containing a given volume. No matter what shape a bubble has initially, it will try to become a sphere. The sphere is the shape that minimizes the surface area of the structure, which makes it the shape that requires minimum energy to achieve.
 ====Experiment==== <!--T:51-->
 Bend pipe cleaners into several different shapes. Make as many different shapes as you can. You might want to make some square, some circles, some squares, some triangles, some heart-shaped or some even the shapes of letters. Make sure each one has a handle.
 <!--T:52-->

AY Honors/Bubbles/Answer Key - Revision history

Jomegat: Add a better formula (yes, I tried it)

Jomegat at 10:18, 22 July 2023

W126jep at 21:13, 1 January 2023

W126jep at 19:03, 4 October 2021

W126jep at 22:50, 27 May 2021

W126jep: Marked this version for translation

W126jep at 08:22, 5 April 2021

Jomegat bot: Bot: Automated import of articles *** existing text overwritten ***

Jomegat bot: Bot: Automated import of articles *** existing text overwritten ***

Jomegat bot: Jomegat bot moved page Adventist Youth Honors Answer Book/Nature/Bubbles to AY Honors/Bubbles/Answer Key: Bot: Moved page

Jomegat bot: Bot: Automated import of articles * existing text overwritten *

Jomegat bot: Bot: Automated import of articles * existing text overwritten *