How Can an Object overcome Gravity ? Lesson #5 Flight Demonstrate and describe how lift is affected by the shape of a surface.(301-17) ID situations which.

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How Can an Object overcome Gravity ? Lesson #5 Flight Demonstrate and describe how lift is affected by the shape of a surface.(301-17) ID situations which involve Bernoulli’s principle (106-4)

 Airfoil – a streamlined shape  Horizontally – flat, left-right direction  Principle – is a rule of science  Bernoulli – that Swiss Guy  Lift – an upward force  Gravity – strong force that pulls everything down toward earth vocabulary

 A hot air balloon rises into the air and floats because the heated air inside it is lighter than the air around it. It is called a lighter-than-air flying device. How can heavy objects fly ?

 Gravity is a strong force pulling down, but it can be overcome by an upward force called lift.  If the air pressure on the bottom surface of an object is higher than that on the top, lift is produced.  Page 17 in your student book. Read it. Try the paper blowing. What is gravity ? LIFT?

You will have a hand out and materials for three tests. We will proceed to the lab where you can conduct the experiments and do your write up on the sheet. In the lab

 Watch this link   Ask the teacher for a bernoulli bag to try the experiment shown. Done ?

   Try these links after you have handed in your work.