THRUST:Forward Motion

Lesson 7 – How are flying objects propelled?

6B: Tuesday April 17th 6A: Wednesday April 18th

Propulsion Lab!

Squid & Octopus Propulsion!

Squid & Octopus Propulsion!

http://www.arkive.org/north-pacific-giant-octopus/enteroctopus-dofleini/video-10b.html

http://footage.shutterstock.com/clip-226813-stock-footage-an-octopus-octopus-vulgaris-using-jet-propulsion-shot-captured-in-the-wild-in-the-mediterranean.html

http://www.youtube.com/watch?v=O0iqRah3N0I

http://www.youtube.com/watch?v=9qmBx6Kn9mU

http://www.pond5.com/stock-video-footage/1/octopus-jet-propulsion.html

Jet Engine Propulsion!

a) _____ enters at the front of the engine and is compressed.

b) The air is mixed with _______ and the gases are ignited.

c) The gases _________ and rush out the jet’s tailpipe at very high speeds.

d) This force thrusts (propels) the plane __________.

http://www.youtube.com/watch?v=p1TqwAKwMuM&feature=related

Airplanes vs.

Rockets

Rocket Propulsion! Tremendous thrust is needed for space shuttles to lift off

and escape the gravitational pull of earth.

Since there is no air in space, rockets must carry boosters containing oxygen as well as fuel.

The boosters drop off when their fuel is used up (2 minutes after being launched).

They land in the ocean and are retrieved by boat.

The external fuel tank is released 8 minutes into flight and burns up re-entering Earth’s atmosphere.

http://www.youtube.com/watch?v=vPQvTgD2quQ&feature=player_embedded

JournalThe most interesting thing I

learned in Science class today that I did not know before is…

This is interesting to me because…