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Sunday, 2 July 2017

Week 9

This week we have been working on 3 different types of projectiles. The 3 types of projectiles are angle launchers, slingshot rocket and the final one is flipping frogs.

Slingshot rocket
On one of the activities we made slingshot rockets. We made them out of masking tape, paddle pop sticks, elastic bands paddle pop sticks, straws, paper clips, blue tack and cardboard. I found that it went a lot further when you flick your wrist as you fire it, because if you don’t flick your wrist it gets caught in the elastic band.

Angle launchers
So this week and the previous weeks,we have been testing a projectile launcher called the angle launcher. The angle launcher like in its name,it has to have an angle and there is a mini firing stick. The angle launcher go up to 90 degrees as it's max angle which practically means if you put it on 90 degrees it will go straight up. My group has been recording its best length. My group decided that we shouldn't count where it rolls to so we decided that we should just measure where it lands instead. To load it you would have to put the ball in the angle launcher and then there was a stick that you would have to push it in and there was 3 options, the first one was to push it into short distance, the second option was to put it into medium distance and the last option was to put it into long distance. The forces that were acting on it was a push force to load it and a push force to launch the projectile.

Flipping frogs
Another thing we did was making our own frogs powered by elastic potential energy they can be made simply. There is a rubber that builds up elastic potential energy to make the frogs fly in the air. The elastic potential energy builds up by the rubber band stretching. When let go the energy goes onto the cardboard making friction then push force makes the frog fly up.  I wonder why the drag does not make the frog on the ground? Other thoughts, does making the frog smaller make the frog go higher? Does changing the cardboard, rubber band or strength make the frog go higher?

Thursday, 22 June 2017

Week 8

This week we have been working on the trebuchet and onager. The difference with the trebuchet is it can fly further than the onager because they have different forces. The trebuchet arm flings the tennis ball higher than the ball on the Onager.

The onager is powered by string which is twisted tight to make it fire.  This is called torsion. The trebuchet is powered by gravity, which pulling the bucket of weights down, called a counterweight, which makes the throwing arm fling up and fire the tennis ball.

The trebuchet goes slowly at the start but then it will go fast at the end.
But with the onager the arm goes fast all the time.

Wednesday, 14 June 2017

Wainui camp

When I was at archery at Wainui Camp and I had my first go, I was so proud because I got black, but at Woodend I got white.  So it means I did better at Wainui camp than Woodend camp. I wonder if next year I may get bulls-eye.

At high ropes I wonder why the girls went so slow. They went so slow that they got two goes and me and my friend got one.

 Now I will tell you about orienteering it was so fun because I like using maps and I also like running around looking for controls. Evidence: we got all of the controls. I wonder if next year I will get all of the controls  again.

Tuesday, 30 May 2017

Week:4 trebuchet

Week:4 trebuchet
This week we have used a trebuchet for our science experiments. On the first few tests the tennis ball didn't go that far because we had less weight but when we put more weight in the tennis ball went further. When we used a harder tennis ball the ball didn’t go that far. Why because the harder tennis ball it would of made it harder for the trebuchet to fling the harder tennis ball.
My data gathering is multistructural because I am confident about the accuracy and reliability of my observations-e.g. Would other people see what I see/measure what I measure etc.

Sunday, 21 May 2017

Balloon rocket

Week 2: Balloon Rocket experiment
Today Flynn, Solomon, the whole class and I did balloon rocket experiments. We did it in groups of 3 or 2. We could do it from different heights but Solomon and Flynn and I didn't try it from different heights, we stayed at the same height. Sometimes it spiraled but sometimes it didn't.

Week:3 Drag
Today's experiment  was about balloon rockets with a small piece of paper attached.  The the distance was 3.46, that was how long the string was. Then we did another experiment with a bigger piece of paper and the weird thing was that with the bigger piece of paper it stopped in the middle of the rope and then it started again and it went to the end but it went very slow.  I think it acted differently because the paper was a different size.  I think the wind pushed it.

Wednesday, 17 May 2017

Staying up

Are they going to catch me or not? I will just start at the beginning. It was 5.00 am in the morning and I was awake. As I walked downstairs, I heard the creaks of my footsteps. I was coming downstairs to watch TV, even though I am not allowed to watch Tv until 7.00 am in the morning. As I sit down on the couch I gasped. Are my parents going to catch me or not? As I look around the room I see shadowI trembl. It's like my parents are looking over me. Are they going to catch me or not? If they do they will ground me for a month. It just turned 7:00 and my parents didn't catch me.

I am learning how to use punctuation and brightsparks.
My learning is multistructural because I had used punctuation but I don't know if I had put them in the right spaces.

Tuesday, 16 May 2017

Science journal

Week 1: Starting to think about science: Gathering and Interpreting Data.
After today's experiment which was about slime that we poured over Mr Anderson, I rated my learning about science multistructural because I volunteered to stir the slime. It was hard to stir because when I put pressure on it the pressure made it hard when you take the pressure off it turned into liquid. If I were Mr Anderson I would be so cold and shivering and I would like to have a nice warm shower.