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      <title>Period B Waves Questions  by </title>
      <link>https://padlet.com/alapane/1mmszbtkzob0yv2i</link>
      <description>Our questions to help us figure out, &quot;How do light and sound behave and travel? How can we use this knowledge to explain what happens to the bell and light when air is removed from the jar?&quot;
</description>
      <language>en-us</language>
      <pubDate>2021-03-21 19:38:17 UTC</pubDate>
      <lastBuildDate>2021-03-23 12:43:27 UTC</lastBuildDate>
      <webMaster>hello@padlet.com</webMaster>
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      <item>
         <title>Do different sounds have different effects?</title>
         <author>trottkamp</author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342533357</link>
         <description><![CDATA[<div>Tyler Rottkamp</div>]]></description>
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         <pubDate>2021-03-23 12:38:52 UTC</pubDate>
         <guid>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342533357</guid>
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      <item>
         <title>How does air change the pitch of something?</title>
         <author>otheberge</author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534230</link>
         <description><![CDATA[<div>OT</div>]]></description>
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         <pubDate>2021-03-23 12:39:03 UTC</pubDate>
         <guid>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534230</guid>
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      <item>
         <title>Why do the light and the speaker not get smaller or bigger in form/shape? Is it because they aren&#39;t really made of air like the balloon and the marshmallow?</title>
         <author></author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534434</link>
         <description><![CDATA[<div>KS</div>]]></description>
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         <pubDate>2021-03-23 12:39:06 UTC</pubDate>
         <guid>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534434</guid>
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      <item>
         <title>MK</title>
         <author>mkalafus</author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534459</link>
         <description><![CDATA[<div>Why do only certain things change when air is being added/removed?</div>]]></description>
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         <pubDate>2021-03-23 12:39:06 UTC</pubDate>
         <guid>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534459</guid>
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      <item>
         <title>RG</title>
         <author>rgorbenko</author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534538</link>
         <description><![CDATA[<div><strong>Why did the sound slowly come back and not right away from the speaker.</strong></div>]]></description>
         <enclosure url="" />
         <pubDate>2021-03-23 12:39:07 UTC</pubDate>
         <guid>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534538</guid>
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         <title></title>
         <author></author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534593</link>
         <description><![CDATA[<div>Why does the sound of the bell get high pitched when air is removed? CP<br><br></div>]]></description>
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         <pubDate>2021-03-23 12:39:08 UTC</pubDate>
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      <item>
         <title></title>
         <author>eklyukin</author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534966</link>
         <description><![CDATA[<div><strong>What effects light and sound waves/ when can we see them?<br>EK</strong></div>]]></description>
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         <pubDate>2021-03-23 12:39:12 UTC</pubDate>
         <guid>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342534966</guid>
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      <item>
         <title>How did the amount of air in the jar have no affect on the light? </title>
         <author></author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342536022</link>
         <description><![CDATA[<div>SE</div>]]></description>
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         <pubDate>2021-03-23 12:39:26 UTC</pubDate>
         <guid>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342536022</guid>
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      <item>
         <title>What propels sound and light to travel</title>
         <author></author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342536145</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-03-23 12:39:28 UTC</pubDate>
         <guid>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342536145</guid>
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      <item>
         <title>How can you affect light?</title>
         <author>pquinn8</author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342537737</link>
         <description><![CDATA[]]></description>
         <enclosure url="" />
         <pubDate>2021-03-23 12:39:46 UTC</pubDate>
         <guid>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342537737</guid>
      </item>
      <item>
         <title>Why did the balloon gain heat after being in the jar?</title>
         <author></author>
         <link>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342542692</link>
         <description><![CDATA[<div>Juliana Cavanaugh</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-03-23 12:40:50 UTC</pubDate>
         <guid>https://padlet.com/alapane/1mmszbtkzob0yv2i/wish/1342542692</guid>
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