We studied air pressure and air compression using the pop-off activity. It was hard at first, but once we discovered the trick everyone was able to pop-off!
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| We worked with our partner to use two syringes to find out even more about air! |
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| We learned that the amount of air in a system doesn't change; it stays the same all the time. |
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| No air can get out of the system and no new air gets in. |
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| What happens is the air gets pushed or compressed into a smaller space. |
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| When all of the air is pushed into one of the syringes, we say it is compressed. Compressed air pushes back with pressure. |
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| It is the air pressure that can push the plunger back out when you release it. |
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| What will happen if I increase the pressure in the system by pushing one of the plungers in? |
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| Plunging one syringe compresses the air, creating pressure and pushing the other plunger out. This picture shows the exact moment when the air pressure pushes the plunger out! |
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The syringe is made of these two parts: the barrel and the plunger.
Our word bank: syringe, plunger, barrel, tube, compress, pressure, and system.
Focus on Standards:
Record observations and data with pictures, numbers, or written statements. (I&E4B)
Students know solids, liquids, and gases have different properties. (PS1A)
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