1 / 20

Rocket Science Forces and Streamlining

Rocket Science Forces and Streamlining. Before you start your mission you must first launch into space. But how do you do that?. We all know that rockets have thrusters and rocket fuel, but how do they take off?. Let’s recap the forces work you did in primary school….

jyoung
Download Presentation

Rocket Science Forces and Streamlining

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Rocket Science Forces and Streamlining

  2. Before you start your mission you must first launch into space. But how do you do that? We all know that rockets have thrusters and rocket fuel, but how do they take off? Let’s recap the forces work you did in primary school…

  3. Forces can affect objects in a number of ways. Forces can make an object: Stay still Start moving Stop moving Change direction Deform Speed up Slow down

  4. Forces can be both visible… Like a child pushing open a door

  5. Forces can be both visible… or a knockout punch

  6. Forces can be both visible… or pulling on a rope

  7. Or forces can be invisible… Like the wind

  8. Or Invisible… Like the forces felt by magnets

  9. Or Invisible… Or the forces due to gravity, which makes things fall!

  10. Every object on Earth has a downwards force due to gravity and we call this force Weight. The more mass an object has, the bigger it’s weight will be.

  11. On Earth we always say that weight is acting towards the centre of our planet… Which is why Australians don’t just fall off Earth and float into space!

  12. For our rocket to take off we must apply another force in the opposite direction (up). What do we call this force which acts upwards and where does it come from? It’s called thrust and it is caused by the jet engines! It will only take off if the thrust is bigger than the weight.

  13. Now answer this question: Which car can travel the fastest? B A Correct A is the fastest, even if we put a supercharged engine in B it still wouldn’t win, But why?

  14. There is always a force that tries to stop you moving on earth which is called friction! You feel this as heat when you rub your hands together (try it) and it’s the reason that most things slow down. When an object is moving through air the frictional force is called ‘air resistance’. Air Resistance Thrust An object which is designed to reduce air resistance (and therefore go faster) is said to be streamlined. So car A

  15. They design rockets to be streamlined. A B C D Which rocket is designed to be the most streamlined?

  16. EXPERIMENT TIME! Your mission is to design a test to see how streamlining effects a rocket taking off. You have the following equipment at your disposal…

  17. Acetic Acid NaHCO3 Paper Bicarbonate of Soda Vinegar Acetic Acid Tissue paper Sodium Hydrogen Carbonate Pipette Spatula Film canister (with lid) Sellotape Scissors

  18. How good is your plan?

More Related