How will you construct a simple barometer?
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take one test tube and import in the pot take some water and dip that SQL in the water when the water came up in test tube level level so that you get parameter is ready because this pressure is
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hey friend
1- Cut the neck off of a balloon. Using scissors, just snip the end of the balloon right off. There’s no precise place to make the cut. You just want to make sure that the opening will be large enough to fit over the mouth of your jar.
2- Stretch the balloon over the top of a jar. Use your hands to pull on the opening of the balloon and put it over the mouth of the jar. Pull it down all around so that the balloon is stretched flat over the mouth, with no wrinkles.[2]
When the balloon is taut over the mouth of the jar, stretch a rubber band over the rim of the jar to hold the balloon in place.
A glass jar is best, but you can also use a metal can.
Whether you use a jar or can, the exact size isn't critical. Just make sure that the mouth is not so big that the balloon can't easily stretch over it.
3- Glue the straw on top of the jar. If your straw has a bent end, go ahead and cut that off first. Place a small amount of glue on one end of the straw, and place it so that the end touches the middle of the balloon. The rest of the straw should hang over the edge of the jar. This straw will serve to hold the pointer, allowing you to track changes in atmospheric pressure.[3]
Silicon glue will work well. You can use super glue, craft glue, or even a glue stick in a pinch, however.
Make sure to let the glue dry before you move on.
The longer the straw, the better (as long as it is a straight one). You can even insert the end of one straw into another to make one longer straw.
4- Attach a pointer. You could tape a needle to the other end of the straw, so that the sharp tip hangs off. If you want something less sharp, cut a small arrow out of cardstock or an index card and insert it into the hollow end of the straw. Make sure it fits snuggly into the end and won’t fall out. This pointer will show how much the straw moves up and down when pressure changes.[4]
5- 5
Stand some stiff paper next to the pointer. To make things nice and easy, tape a sheet of paper to a wall, and place the jar next to it so that the pointer aims at the paper. Mark the pointer’s position on the paper. Above it, write “high.” Below it, write “low.”[5]
Stiff paper like cardstock or cardboard will stand up better, but you can use regular paper if that's all you have. You can find lots of options at any store that sells stationary or office/school supplies.
The pointer should be close to the paper, but not actually touching it.
6- Record changes in the pointer’s position.
7-Image titled Make a Simple Weather Barometer Step 7
7
Interpret the results. Make notes about the weather conditions associated with each change in the barometer's position. When the pointer rises in times of high pressure, is the weather cloudy or clear? What about when the pointer drops during low pressure?
Low pressure is usually associated with rainy weather. High pressure can mean mild or cooler weather.
1- Cut the neck off of a balloon. Using scissors, just snip the end of the balloon right off. There’s no precise place to make the cut. You just want to make sure that the opening will be large enough to fit over the mouth of your jar.
2- Stretch the balloon over the top of a jar. Use your hands to pull on the opening of the balloon and put it over the mouth of the jar. Pull it down all around so that the balloon is stretched flat over the mouth, with no wrinkles.[2]
When the balloon is taut over the mouth of the jar, stretch a rubber band over the rim of the jar to hold the balloon in place.
A glass jar is best, but you can also use a metal can.
Whether you use a jar or can, the exact size isn't critical. Just make sure that the mouth is not so big that the balloon can't easily stretch over it.
3- Glue the straw on top of the jar. If your straw has a bent end, go ahead and cut that off first. Place a small amount of glue on one end of the straw, and place it so that the end touches the middle of the balloon. The rest of the straw should hang over the edge of the jar. This straw will serve to hold the pointer, allowing you to track changes in atmospheric pressure.[3]
Silicon glue will work well. You can use super glue, craft glue, or even a glue stick in a pinch, however.
Make sure to let the glue dry before you move on.
The longer the straw, the better (as long as it is a straight one). You can even insert the end of one straw into another to make one longer straw.
4- Attach a pointer. You could tape a needle to the other end of the straw, so that the sharp tip hangs off. If you want something less sharp, cut a small arrow out of cardstock or an index card and insert it into the hollow end of the straw. Make sure it fits snuggly into the end and won’t fall out. This pointer will show how much the straw moves up and down when pressure changes.[4]
5- 5
Stand some stiff paper next to the pointer. To make things nice and easy, tape a sheet of paper to a wall, and place the jar next to it so that the pointer aims at the paper. Mark the pointer’s position on the paper. Above it, write “high.” Below it, write “low.”[5]
Stiff paper like cardstock or cardboard will stand up better, but you can use regular paper if that's all you have. You can find lots of options at any store that sells stationary or office/school supplies.
The pointer should be close to the paper, but not actually touching it.
6- Record changes in the pointer’s position.
7-Image titled Make a Simple Weather Barometer Step 7
7
Interpret the results. Make notes about the weather conditions associated with each change in the barometer's position. When the pointer rises in times of high pressure, is the weather cloudy or clear? What about when the pointer drops during low pressure?
Low pressure is usually associated with rainy weather. High pressure can mean mild or cooler weather.
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