Wednesday, 21 June 2017

Science Blogs

Science Blogs

Week 9/10
Science Blog 
I am designing a playground model.
The things that are working well are that I have made things the right size for my 7-8 cm dolls because before I made them a bit too big.
I am not rushing it to get it finished I am taking my time.

My struggle was that I made the playground equipments look big for my dolls so I had to restart because I couldn't fit all my equipment on my painted canvas. I took everything down. This time I made things a little smaller.

I think I am working well. I am enjoying working by myself because I could make the playground look exactly how I want it to look like.

Improvements I made were that I was more responsible with bringing the things I need because if I had a buddy she would maybe bring it and I don't have to worry. But if I’m working by myself I have to make sure that I bring all the things I need.

Next science making time I would be making.
(In order)
Flying fox. climbing wall, swing, see-saw, merry go round and a basketball hoop.
I probably won't finish it all.
This is my plan⤵️
Playground Model Plan
Playground Equipments 
I will make:
Slide, see-saw, swing, monkey bars, merry-go-round, climbing wall, flying fox, basketball hoop, fireman pole.
Connecting Parts:
crawl tubes, climbers, platforms and bridges.
Picnic table and water fountain.

Who I will work with:
By myself. 

Things I will need:
Popsicle sticks in different sizes
String and rope
Modelling clay
Bendable wire
Wooden dowels
Cardboard tubes 
Cardboard and paper
Scissors ✂️,glue and rulers
Coloured pencils ✏️
Funny shaped straws
Square canvas
Bottle caps

Before I start crafting:
Have my plan done, bought everything that I don't have, collected cardboard, bottle caps and paper tubes.

Finished my plan.
Gather all my materials.
Cover the bottom of my square pot with green paper.
     Make small marks on the green paper to show where I want my playgrounds equipments to be.
Start making my playground equipments.
Add final details.

Steps to make the...
Cut a long piece of thin cardboard. 
 Cut a sides for the slide.
Glue the long piece of thin cardboard to the sides.
Cover with paper and decorate.
Cut a skewer to fit two big popsicle sticks.
Thread beads on the skewer.
Glue the ends of a big popsicle stick to the skewer.
Glue the two popsicle sticks to two beads.
Make the handle.
Monkey bars:
Cut skewers for the bars.
Glue the cut skewers to another skewer.(not cut) 
Glue the skewers to a popsicle stick.
Add a popsicle sticks on each end of the popsicle stick.
Merry go round:
Make four clay chairs. Wait to dry.
Make a cross with two popsicle sticks and make a hole in the middle.
Put a 3-4 cm straw through the hole.
Put a 4-5 cm skewer in the straw.
When the chairs are dry paint them and glue them on each end of the popsicle stick.
Climbing wall:
Make drops of hot glue on coloured pieces of paper. Wait to dry.
When dry peel off and glue on cardboard.
Glue the cardboard to a platform.
Flying fox:
Thread a bead through wire.
Cut string and glue on the bead.
Glue a piece of cardboard on the end of the string.
Fireman’s pole
Glue a skewer to a popsicle stick.
Glue the popsicle stick on a platform.

How this use force:
Slide: A slide uses push, gravity and acceleration. The gravity is pushing you from the top of the slide down to the ground. It also uses acceleration, you traveling down the slide.
See-saw: A see-saw uses gravity and balance. The two people on either end have to be roughly the same weight to keep it balance. Each person take turns to be pushed by gravity.
Monkey bars: Monkey bars use gravity. Gravity pulls you and that's why it is hard to get across to the end.
Swing: The swing force is gravity, deceleration and acceleration. Once you start to pump your legs you start to pick up speed and start to swing then gravity pulls you and the swing back towards the ground. But if you stop pumping 
you start to de accelerate.
Merry-go-round: The merry-go-round uses push deceleration and acceleration. It starts to accelerate when you start pushing it. When you stop pushing it starts to decelerate. 
Climbing wall: Climbing walls use both push and pull because your hands pull you up to reach the next plank or your feet will push you to help reach the next plank.
Flying fox: The flying fox uses gravity, push and friction. You have to push yourself to the other side while the gravity is pushing you down. The friction between the handle and the wire makes it not last forever.
Fireman’s pole: The fireman’s pole uses gravity. Let the pole slide between your hands and the friction between you and the pole will slow you down so you won't go to fast. Gravity will push you down to the ground.

Week 8
Science Blog
Introduction: What is force?
Everything needs a force to make it move.
Force is push or pull.
Push is a forward force and pull is a force that goes towards you.
Example of force being used is when a door opens and closes. It uses push and pull.
Gravity is a force that keeps us and everything on the ground.
Without gravity everything would just float away.
Friction is the force that makes it difficult for things to move freely when they are touching each other.
These are Isaac Newton’s three laws of motion:
Inertia: When an object will continue to be the same, until a force changes it.
Acceleration: When an object is increasing speed.
For every action there is a reaction.

What I did:
I have explored rocket balloons with Seohyun and Shileen. The materials we used were a balloon, a 3m string, tape and 10cm straw. 
Our steps:
We needed to find a suitable area to work in.
Thread the straw to the string.
Tape our balloon to the straw.
 Tape our 3m string on two objects to make it 180 degrees.
Blow the balloon and hold.
Let go!!! And watch the balloon travel.

What we changed:
Time 1,2,3 were all the same variables. 
String 3m, angle 180 degree, balloon size 25cm by 19cm, straw 10cm and firm tension. Time 1 was 1.35 seconds, time 2 was 1.01 seconds and time 3 was 1.38 seconds.
First we change the size of the balloon to 20cm by 15cm to see if the acceleration slows down. The time was 1.28 seconds and 1.78 seconds . It didn't go slower so we tried changing the tension to a loose tension. I was surprised because the time was 7.90 seconds and 2.65 seconds. We achieved making the balloon travel slower. Then we tried making it go faster. We changed the balloon type. The balloon looked like a big sausage. The size was 27 cm by 7 cm when blown up.
It was so fast that it was less that 1 second, 0.73 and 0.95. We still wanted it to go faster so we made the balloon bigger. The size was 32 cm by 10 cm but it didn't go faster the time was 0.78.
I learnt that the sausage like balloon goes faster than the regular balloon because the sausage like balloon was smaller when it was not blown up so it is trying harder to get back to his original size, the air from the balloon travels faster.

How can I use this new learning:
I can show this to my brothers and make it so they can play with it. I can also use this learning to make a balloon powered cardboard car.

My wonderings:
I wonder what would happen if we added two balloons.
I also wonder why the second try of loosening the string went faster.

How does my activity use force:
The air from the balloon pushes the balloon to the end of the string.

Week 7
Science Blog
What I’ve done:
I have explored rocket balloons again. The materials that we used to make it was a 3 meter string, a 10 cm straw and a balloon. I worked with Shileen and Seohyun. I also designed a pulley system. I worked with Seohyun in the tiered seating.

What I found out:
I found out that reducing some air from the balloon to make it a few centimetres smaller doesn't affect the acceleration of the balloon. 

What I wonder:
I wonder if the balloon would go faster if I added 1 more balloon.
I wonder how we can slow the acceleration of the balloon but the balloon reaches the end.

Week 6
Science Blog
What I’ve done:
I got to choose between three activities and they are basketball bounce, ping pong ramps, or chair pulley. I chose to make a ping pong ramp because it looked fun. I worked with Seohyun, Shileen and Grace in the tiered seating. The materials we used were bookholders, meter rulers, phone pipes, clipboards and books. 

What I've found out:
I found out that the ball goes down the ramp because gravity pushes it down.
I also found out that the ball will go down a ruler that is horizontal, the ruler has ⅔ hanging at the end of a chair and ⅓ on the chair so the part that is hanging gives it weight and the ruler bends a little so it's not completely straight. That's how the ball goes down.
I learnt that there is science in everyday things you do.

What I wonder:
I wonder if will the ball go down if the ramp was on the moon.

Week 5
Science Blog 
What I’ve done:
I have explored rocket balloons again with Kiri in the room 12 end. We used string, a balloon and a straw. I also made a chair pulley with Vanessa we used rope, basket and two chairs.

What I found out:
I found out when I was doing the chair pulley that the basket moves because it grips on the string and goes to the direction that it is moving.

What I wonder:
I wonder what kinds of things do they use the pulley for.

Week 4
Science Blog
What I’ve done:
I have explored rocket balloons. I used a balloon, a straw and string. I also explored catapults. Grace, Seohyun and I used popsicles sticks, rubber bands, a spoon and cotton balls.

What have I found out:
I have found out that it was not easy to make a catapult that shoots the cotton ball far it was easier to make one that shoots the cotton ball high.

What I wonder:
I wonder if I change the design of the catapult would the cotton ball go further?

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