Sunday, December 3, 2017

Spaghetti Bridge Explanation


We designed this structure in tinkercad
We have triangles because they are the strongest shape.
We used pillars because they hold the weight that is travelling on the deck and holds the structure together.
We choose the anchor at the bottom of the pillars because it would make it stable.

Thursday, November 9, 2017

Bridge loads

Dead Load:
The weight of the structure itself is called a dead load. Anything permanently attached to the structure  is part of a dead load including the columns, beams, nuts and bolts


Live Load:

The weight of the stuff on the structure is called the live load. Things that move in or on a structure, like people, cars are
all  examples of a live load.


Settlement Load:
When the soil beneath settles unevenly, it is called the settlement load. Structures will sink and change shape when they experience settlement load.
Thermal Load:When a structure expands
or shrinks with the temperature, it is  experiencing thermal load. The temperature causes beams and columns to change the shape and push and pull on other parts of the structure.


Earthquake Load:
When the ground beneath a structure jerks back and forth during a n earthquake, it is called an earthquake load. Earthquake  loads push and pull horizontally on a structure.


Dynamic load:
Loads that change shape over time are called a dynamic load. Dynamic loads from wind gusts to pounding objects create vibration that can become bigger and more dangerous over time.


Thursday, September 7, 2017

The time I lost my breath

 Cross country. Feeling pumped to try out the new course; my heart thumping as I approach the  starting  line; butterflies swirling around as the horn blows.

 My feet pound on the muddy surface. Wind blowing hard on the surface of my face. Creeping  up the hill. Making my way into the bush. Running on the crippling gravel. Voices echoing behind me saying´Wait up for me´.

Rushing up and down hills. Running round the field as I make my way to the bridge. My legs trying to stay strong. As I walk across the bridge and up the hill. Seeing sunlight I started to run again.

My sister trailing behind me. As my breath trembles as I try to speak. I ran across the finish line. My legs trembles with pain. Breathing hard trying to catch my breath. My legs aching as I try to walk. One of my heels crying with pain. I slowly walk back to my mum. The audience cheering loud.


How energy is transferred between states of matter!!!

How energy is transferred between states of matter!!!


Solids- Heat energy is conducted through the solid in this way. As atoms of the solid gain kinetic energy the temperature of the solid increases.


Liquids- Convection occurs when particles with  a lot of heat energy in a liquid or gas move and take place of particles with less heat energy.  Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated.

Gases- Gas is a common state of matter. Compound gases contain a combination\of different atoms. Pure gases are made up of one atom. In gases, the atoms are  much more spread out than solids and liquids and the atoms collide randomly with one another.

Monday, September 4, 2017

Spring awakes

The birds chirping as the bright early sun walks by.
Smells of muddy grass floats in the air.
So many white fluffy clouds and the blue of the sky is cold.
Glossy green leaves wave their tenderest green from the trees above.
Scarlet pink blossoms glow with the sunlight.
Bright colours fly over the meadows.
Tenderest green fields wave their glossy green.  
Image result for spring





Tuesday, August 29, 2017

Convection: Convection means the movement caused within a fluid. Convection is the circular motion that happens when warmer air or liquid which has faster moving mole clues, making it less dense rises, while the cooler air liquid drops down.

 Conduction: Conduction is when heat or electricity moves from one place to another. If you’re ever felt a shock while putting on a sweater, you have participated in electrical conduction.

 Radiation: Radiation is energy transmitted in waves or a stream of particals. The first thing you think of as radiation is probably X-rays, but what cooks your food in the microwave oven is also radiation.

Sunday, August 13, 2017