Rain Water Storm Case Study

Physics pg194-195 2.why does barometric pressure drop when there is a storm? -Barometric pressure drops because there are powerful winds in the higher atmosphere that blows in or suck out in any direction and change at random times.
3.Our ears pop when we ride in an airplane or when we drive to the mountains,why? - Our ears pop when we ride in an airplane or when we drive to the mountains because the air high above the surface of the earth is less dense than air near the surface.As you ascend in an airplane(or go up in the mountains)the air pressure decreases,and the air trapped in your inner ear will cause your eardrums to push outward.This expansion causes not only the discomfort you feel before your ears "pop",but also a decrease
-This is usually a screen in the faucet outlet.When the waters leaves the faucet there are air spaces where the water has to go around the wires in the screen.Then as the water travels down the skin effect(the nature of a liquid to stick together) takes over and draws the water back together,eliminating the space cause by the screen.The water from the faucet increases the speed because of acceleration due to gravity.The formula for flow rate is:cross-sectional area*velocity.In the formula we can say that the velocity and cross-sectional area are inversely proportional .Since velocity increases because of acceleration due to gravity ,cross-sectional area decreases.That's why water coming out of the faucet becomes narrower.As the water increase in speed,it's area decreases.it is also vice versa,when you lessen the water area of the water ,the water gains speed.
10.Why are people in buildings threatened by a tornado told to open windows to minimize damage? -For me,the people in the building threatenedby a tornado told to open windows to minimize damage so that the air caused by a tornado cannot immediately go inside the building and to change the direction of the
4.Which will cause more severe burn:steam or boiling water? -Steam because more burn,at the same temperature water vapor(steam)contains more heat than liquid water(boiling water).In addition,to sensible heat steam contains latent heat due to phase change.Boiling water contains sensible heat only thermodynamics.
5.Can you cite some daily experiences that will prove that water expands on freezing? -when you make an ice and freeze it in a freezer,when you place the melting ice in a freezer,when you put a glass of water in freezer.
6.The sparks from a firecracker are red hot yet they do not burn your skin,Why? -Because they are not hot enough and do not have enough energy in them to heat the skin for long enough to cause a burn. At works the same way as running your finger through the flame of a candle.
7.When a piece of metal with a cavity inside it is heated,will the hole gets bigger or smaller?Explain. -It will get bigger,This can be a small hole, maybe just the size of a quarter. If the hole is too big, the