Defensive Structures | Special Guest

This week Wednesday a special guest from Defence Force, came to talk to us about what he does and bombs, guns, and explosives. His name was Mr Ching, but preferred us to call him his first name, Issac. This would help us with our inquiry because it's based around the topic we're learning about.

First he talked about the 4 layers of a defensive mechanism. The first one was camouflage. This means to blend in with your environment. This is important to be disguised. With some, you are able to tell from in the sky or you can spot it when you get closer. The thermal scope is very useful and can spot something living, by being able to pick up there warmth.

Shape is apart of the materials. The shape is important, because you know what you are defending from or what you are trying to do like shoot or bomb something. Dumb-bombs and Smart-bombs are also apart of the materials. Dumb-bombs you have not much control of, it goes whatever it goes. Smart-bombs are the opposite, you have control of them and if you aim somewhere, that is where it will most likely go.

After explaining and talking about explosives, and other defences like turrets, and showing us videos about a shock wave, we had to get into small groups of 5 to create a defensive structure to defend a helicopter in a shock waves using only a piece of paper and 8 straws. If asked, we could get a few more too. We went away with the materials and scissors to make the defence mechanism with only limited time. In the end, they were all taped to the flat surface of the bench for a bit more stabilisation and then the teachers used kicking board to create a strong wind to try and blow it down with the helicopters inside. Our was stable and was able to stand up with the wind blowing one way, and blowing back too.

It was a very interesting day and fun to create the defences and learn more about explosives, bombs, and guns that the information would be useful for other subjects too.