For the first activity(forces) I learned that a bridge (the Tacoma bridge) got twisted and got torn apart in 1940! I thought that strong structures like bridges were not that light enough to be twisted.
For the second activity, (loads) I learned many ways you could strengthen a table against wind, soft soil, earthquakes, vibration, and temperatures.
For the third activity, (materials) I learned that bricks were very easy to bust under tension.
For the fourth activity (shapes) I did not really learn that much because I already know that squares and rectangles are very weak, and triangles are strongest. Then I guessed that arches are stronger than squares and not as tough as triangles.
For the forces activity I learned that the more you squeeze the heavier the compression force acts. For the loads activity I learned that temperature effects some buildings/structures. For the materials activity I learned that steel loses is strength in hot temperature.I also learned that bricks have a bad tension power. Finally in the shape activity I did not really learn anything, I already knew that triangles were stronger that squares.
1. I learned that the sliding action, that pulls parts of the ground, during an earthquake, is called shear. 2. I learned that loads, that change over time, are called dynamic loads. 3. I learned that there's magnesium, and copper inside Aluminum. 4. I learned that as an arch tries to spread outward, external forces, called 'buttresses', push back on the sides of the arch, and prevent it from spreading apart.
Part 1: forces I learned that strong winds can cause torsion on strong structures, even bridges, and cause them to colapse. Part 2: loads I did not know that thermal heat (and other temeperature/weather forces) could have such an effect on objects that are not properly strenghthened. Part 3: materials I find it amazing that bricks can break so easily, seeing as they are often supporting a house! Part 4: shapes I thinks that it's interesting that of all the basic shapes in structures (rectangles, circles, triangles) that rectangles are the weakest shape because you need something in order to keep it stable.
In the "Forces" section I learned that sometimes when there is an earthquake, one part of the land slides one way and the other part moves the other way, and that this is called "Sheer". In the "Loads" section I learned that a structure can shrink or expand because of the temperature and that this is called "Thermal load". In the "Materials" section I learned that wood is easy to break because if you don't pull it in the direction of it's fibers it will break. In the "Shapes" section" I learned that the top of a triangle is the strongest part because all of the force is spread to the other 2 lines.
The triangle was the strongest shape and the rectangle was the weakest. Steel was very strong in both compression and tension. So was aluminium. Cast iron was strong in compression and reinforced concrete was strong in tension. -Jacob
Winds and other strong forces can use torsion to twist and/or break something, even a bridge and that manmade structures (such as a skyscraper) are always affected by forces, even if they are on solid ground and/or there is no wind or water rushing against them.
The weight of a structure itself is called the Dead Load and the name of the stuff on the structure is the Live Load.
There are many, maaannyyy materials for building, but they all have weaknesses. E.g. spruce wood is light, cheap and moderately strong, but it rots and burns very easily.
Rectangles are easy to break, while triangles support each side with the other sides, so each side only experiences one force at a time. It can still be bent on its sides, though.
In Forces, I learned that the sliding force is shear, a force that cause parts of a material to slide past one another in opposite directions.
In Loads, I learned soft soil can affect buildings and structures by making them in bad shape, but to avoid this, you add heavy concrete pillars or piles
In Materials, I learned that steel is one of the strongest materials in construction and it's strong in compression and tension, but it rusts, and loses strength in extremely high temperatures.
In Shapes, I learned that the triangles weakest point is its side and its strongest point is the top of it.
I learned from the "Forces" section that there is a force called shear. Shear is a force that causes parts of a material to slide pass one another in opposite directions.(from the website)
What I learned from the "Load" section was that when a structure expands or shrinks with the temperature, it is experiencing thermal load. The temperature causes the beams and columns to change shape and push and pull on other parts of the structure.(from website.)
What I learned from the "Materials" section Its not easy to break a block of wood sideways because wood is strong when you pull it in the direction of its fibers. It would have been three times easier for you to break the block of wood if you'd stretched it from the top in bottom - across the direction of its fibers.(From the website when you were testing how it would be when you tried to brake different materials)
And last but not least, what I learned from the "Shapes" section, was, if you push a triangle from its side, it is stronger if you were to push it from the top point.That is because when you poke the top point of the triangle, the two sides squeeze together and the bottom side pull apart. The triangle does not bend because each side experiences only one force at a time.(also from the website)
14 comments:
I learned that the more tension you put on an object, it becomes longer, and the more compression you put, the more shorter it gets.
so this activity is basically showing you an animation of bending, stretching, squeezing, sliding and twisting
For the first activity(forces) I learned that a bridge (the Tacoma bridge) got twisted and got torn apart in 1940! I thought that strong structures like bridges were not that light enough to be twisted.
For the second activity, (loads) I learned many ways you could strengthen a table against wind, soft soil, earthquakes, vibration, and temperatures.
For the third activity, (materials) I learned that bricks were very easy to bust under tension.
For the fourth activity (shapes) I did not really learn that much because I already know that squares and rectangles are very weak, and triangles are strongest.
Then I guessed that arches are stronger than squares and not as tough as triangles.
- There is a force called shear.
- Tempature can affect builldings.
- Steel is the strogest.
- You can put buttress to strenghnen it
~ Andra
Twisting can be actually stay together depending which materials
The two other things I learned, is that cast iron can be pulled easily, put it is really hard to squeeze it.
The next thing I learned, is that an earthquake vibrates an object too much that it breaks.
For the forces activity I learned
that the more you squeeze the heavier the compression force acts.
For the loads activity I learned that temperature effects some buildings/structures. For the materials activity I learned that steel loses is strength in hot temperature.I also learned that bricks have a bad tension power. Finally in the shape activity I did not really learn anything, I already knew that triangles were stronger that squares.
~Ronan
1. I learned that the sliding action, that pulls parts of the ground, during an earthquake, is called shear.
2. I learned that loads, that change over time, are called dynamic loads.
3. I learned that there's magnesium, and copper inside Aluminum.
4. I learned that as an arch tries to spread outward, external forces, called 'buttresses', push back on the sides of the arch, and prevent it from spreading apart.
Part 1: forces
I learned that strong winds can cause torsion on strong structures, even bridges, and cause them to colapse.
Part 2: loads
I did not know that thermal heat (and other temeperature/weather forces) could have such an effect on objects that are not properly strenghthened.
Part 3: materials
I find it amazing that bricks can break so easily, seeing as they are often supporting a house!
Part 4: shapes
I thinks that it's interesting that of all the basic shapes in structures (rectangles, circles, triangles) that rectangles are the weakest shape because you need something in order to keep it stable.
In the "Forces" section I learned that sometimes when there is an earthquake, one part of the land slides one way and the other part moves the other way, and that this is called "Sheer".
In the "Loads" section I learned that a structure can shrink or expand because of the temperature and that this is called "Thermal load".
In the "Materials" section I learned that wood is easy to break because if you don't pull it in the direction of it's fibers it will break.
In the "Shapes" section" I learned that the top of a triangle is the strongest part because all of the force is spread to the other 2 lines.
The triangle was the strongest shape and the rectangle was the weakest. Steel was very strong in both compression and tension. So was aluminium. Cast iron was strong in compression and reinforced concrete was strong in tension.
-Jacob
I learned:
Winds and other strong forces can use torsion to twist and/or break something, even a bridge and that manmade structures (such as a skyscraper) are always affected by forces, even if they are on solid ground and/or there is no wind or water rushing against them.
The weight of a structure itself is called the Dead Load and the name of the stuff on the structure is the Live Load.
There are many, maaannyyy materials for building, but they all have weaknesses. E.g. spruce wood is light, cheap and moderately strong, but it rots and burns very easily.
Rectangles are easy to break, while triangles support each side with the other sides, so each side only experiences one force at a time. It can still be bent on its sides, though.
In Forces, I learned that the sliding force is shear, a force that cause parts of a material to slide past one another in opposite directions.
In Loads, I learned soft soil can affect buildings and structures by making them in bad shape, but to avoid this, you add heavy concrete pillars or piles
In Materials, I learned that steel is one of the strongest materials in construction and it's strong in compression and tension, but it rusts, and loses strength in extremely high temperatures.
In Shapes, I learned that the triangles weakest point is its side and its strongest point is the top of it.
I learned from the "Forces" section that there is a force called shear. Shear is a force that causes parts of a material to slide pass one another in opposite directions.(from the website)
What I learned from the "Load" section was that when a structure expands or shrinks with the temperature, it is experiencing thermal load. The temperature causes the beams and columns to change shape and push and pull on other parts of the structure.(from website.)
What I learned from the "Materials" section Its not easy to break a block of wood sideways because wood is strong when you pull it in the direction of its fibers. It would have been three times easier for you to break the block of wood if you'd stretched it from the top in bottom - across the direction of its fibers.(From the website when you were testing how it would be when you tried to brake different materials)
And last but not least, what I learned from the "Shapes" section, was, if you push a triangle from its side, it is stronger if you were to push it from the top point.That is because when you poke the top point of the triangle, the two sides squeeze together and the bottom side pull apart. The triangle does not bend because each side experiences only one force at a time.(also from the website)
Post a Comment