Stone Carving

Chantae -Group B

Today in stone carving and I have some information on my stone. when we go into the workshop, we have to put on some old clothes or pe gear and get our stone. Mister then tells us our next step. Some tools that we used are the cheese grater, sandpaper, files, and the saw. We first used a pencil to sketch out our design then we outline it. The saw helped us cut the bits that we didn't need. Then we used the cheese grater to scrape the rest of the pieces. The sandpaper was used to make our stone soft and not rough. Once we finished, we moved it into the girls changing rooms where mister can add on the finishing touches.

After that, we could move onto our next design. My other design was a harakeke. My mates designed a bigger piece for the school.

These designs are cultural, and some can represent the school by making it into an H for Hornby. Christchurch was built under a lake and is now Otautahi.

Stone Carving

Today we had to get into groups and make a big design. We searched around the internet looking for a cool design that involves the culture. We have some sketches of each one that we found interesting.
Although we have some mistakes we can fix them up in the workshop

Stone Carving

Today I finished the last of my stone. We had to use sandpaper to make it soft. Scrapping the edges to define the texture. And adding the curve in the middle. At first, we got a fat piece of rock looking stone. Then we had to grab a pencil and outline our design. We then used a saw to cut the outline, but it turned out hakatere. We used the cheese grater to make it better. The next step was to sandpaper the design. making it smooth and not rough.

Stone Carving

Today I woke up and walked to school. I went to the shops to get a fizzy and bk for lunch. In class, we were talking about what different types of shapes and sizes based on the designs we drew. Next period we had to carve out our stones.

Water Rockets - Aerodynamics

At its simplest, a water rocket is basically an upside down fizzy drinks bottle, which has had a ‘nose’ cone and some fins added.

The nose cone 
The job of the nose cone is to make the rather snub-nosed end of the fizzy drinks bottle more aerodynamic. Also if you have ‘payload’ on your rocket, or a parachute mechanism, this is probably where it will be placed.

The fins
Others might disagree, but I think the fins are the parts of a rocket that really give a rocket its character. Technically, the fins are important for ensuring that the rocket flies smoothly

Once we have added the fins and the nose cone, we have something which looks like a rocket. But how do we make it go like a rocket?

First we need to add some water, and some kind of release mechanism, that will keep the water in the bottle, until we choose to release it. The water will then leave the bottle through its nozzle.

Typically the bottle will be between about one quarter and one third filled with water.

Launch 
To launch the water rocket, we need to pump air into the rocket: this provides the energy for the launch. As the air enters, it bubbles up through the water and pressurises the ‘empty’ space above the water. You can see that the release mechanism has to be really quite clever, allowing air into the rocket, while not allowing the water to escape until we activate a trigger.

Aim: To look at the 4 main forces of flying and how these can be overcome.

Hypothesis: I think that.......

Method: Working in pairs you are going to make a paper wing and experiment with it.

1. Make a paper wing out of A4 paper 
2. On the field you will need to record and observe how 5 different changes affect the way it flies.

Plane type	How does it behave?	Time ( secs)
Paper sheet, drop	gravity	3
Paper with fold down middle, drop	falls down quickly	2
Paper with fold and 1 paper clip, drop	falls gently	4
Fold, 2 clips, rudder, drop	falls normaly	2
Fold, 2 clips, rudder throw	it ailed	3

Brainstorm: What are the forces acting on an aircraft?

1.   Drag
2.   Lift
3.   Gravity / Weight
4.  Thrust

How can we overcome some of these forces?

Force	Their effect on a plane	How to overcome them?
Gravity / Weight	pulls it down	makes things light
Drag	makes it go solwer	making something go faster, streamline
Lift	makes it go up	gravity & weight
Thrust	pulls it away	powerful engine