Air pressure and Bernoulli's principle basics

1. 1In what direction does air pressure push?

   1. Aup
   2. Bdown
   3. Call around
   4. Din
2. 2Which of the following words is used to describe air molecules that have been squished together?

   1. Acompressed
   2. Bdepressurized
   3. Csquished
   4. Daerodynamic
3. 3what did the investigation during which the candle was blown out from the other side of a tin can prove?

   1. Aair flows around objects
      
   2. Bair is blocked by objects
   3. Cair changes in direction
   4. Dair cannot change directions
4. 4How does air pressure affect lift?

   1. Ahigh pressure below pushes things up
   2. Blower pressure above lets things rise
   3. Chigh pressure above pushes things up
   4. Dboth a and b are correct
5. 5Which examples below best illustrates the compression of air?

   1. Aflying a kite
   2. Binflating a tire
   3. Cblowing out a candle
   4. Dusing a vacuum cleaner
6. 6When a student kicks a soccer ball, the air particles inside the ball are compressed for a very short time. An inference that can be made about the air particles inside the ball is that when they are compressed, they

   1. Aare colder than uncompressed air particles
   2. Bhave less mass than uncompressed air particles
   3. Chave more mass than uncompressed air particles
   4. Dare closer together than uncompressed air particles
7. 7Bernoulli's principle states that as the _ of a fluid increases, the pressure exerted by that fluid _

   1. Aspeed increases
   2. Bspeed decreases
   3. Cvolume increases
   4. Dvolume deceases

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Quiz sobre Sem título, criado por Mrs. Mendes em 19-06-2015.

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Mrs. Mendes

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