| 1 | ||
| #1 | 3 adapations on a bird |
Tail used for steering, Hollow bones, powerful chestmucles |
| #2 | What does exerts mean? |
gives off |
| #3 | What are 5 other words for compressed? |
squished, contracted,squashed, Pressed,Squeezed |
| #4 | What are 3 properties of air |
1 Air takes up space 2 Air exerts pressure 3 Air hcan be compressed |
| #5 | What are the 4 forces of flight? |
gravity thrust drag lift |
| 2 | ||
| #1 | What is Bernoulli's principle? |
fast moving air creates low air pressure |
| #2 | What happens if lift is greater than mass? |
the plane ascends |
| #3 | What happens if thrust becomes greater than drag? |
the plane goes forward |
| #4 | What happens lift, thrust, drag and mass are equal? |
the plane goes at a steady flight |
| #5 | What happens if thrust becomes less than drag? |
the plane slows down |
| 3 | ||
| #1 | What happens if lift becomes less than mass? |
The plane descends |
| #2 | Describe how a bird gets thrust? |
When a bird flaps it's wings it actually pushes the air backwards away from it's path |
| #3 | Describe the shape of a aircrafts wing |
airfoil - curved on the top and flat on the bottom |
| #4 | Is there more or less air pressure under the aircraft's wing |
more |
| #5 | What happens when air is heated? |
It expands |
| 4 | ||
| #1 | What are 2 ways that aircraft propel themselves? |
bloopers
|
| #2 | What are two processes that use up oxygen? |
Rusting and Burning |
| #3 | Airplanes and sports cars are streamlined to reduce |
Drag |
| #4 | What happens to wind as it passes in between large buildings and skyscrapers?
|
It speeds up. |
| #5 | An ostrich can not fly because the force of ______ is greater than the force of ______ that can be generated by their _____. |
gravity / lift / wings |
| 5 | ||
| #1 | What gas makes up the largest component of air? |
Nitrogen |
| #2 | What is created when air is removed? |
googoooooooooooogleeooooooooooogleoooooogleooooogleoooogleooooogleooooogleooooogleooooogleooooogleoooogleoooogleooooogle
|
| #3 | You and your friend are having a race to see who’s paper will fall to the ground the fastest. You crumple up your paper into a ball and your friend leaves their paper as is. Why does your balled up piece of paper reach the ground first? |
It has less drag. |
| #4 | As you drink from a juice box through a straw, the juice moves up the straw because the air pressure is |
lowered inside the straw |
| #5 | Place a piece of cardboard on top of a full glass of water. Holding the glass and the cardboard quickly flip the glass upside-down and slowly let go of the cardboard (none of the water escapes).
Which property of air does this experiment show? |
Air exerts pressure. |
| Final Question | |
If you were to blow air through a straw between two cans, what would happen? Why? |
The can's would move together.
Bernoulli's Principle states that the fast air between the cans create low pressure. The higher pressure air around the cans pushes the cans together. |