Experiments
True or False: A Tall tower with a narrow base is stable
False
Name 2 Natural structures
bee hive, honey comb, tree, shells, nests etc.
How does a Tie work?
It holds two things together so that they do not separate when a force is applied. It stops two parts of a structure from being pulled apart
What is the difference between STRONG and STABLE
Strong means an object can support a lot of weight. Stable means an object will not fall over easily. It is well balanced.
Tell us a fact you learned from the Paper Bridge experiment.
Responses will vary
Name 5 man made structures
Any 5 that everyone else agrees on to be correct
How does a Strut work?
A strut keeps a structure up. It keeps it from collapsing or falling down when a force is applied. Use to stop two parts of a structure from being pushed together
What does Unstable mean?
An unbalanced structure. Something that can easily fall down or fall over
What is the strongest shape? Why?- Reflect on the Paper Bridge experiment
Triangles are the strongest shape. When you press the corners of a triangle the it does not change shape. Each side acts as a tie and a strut
Is a bridge a natural or man made structure?
man-made
What is a structure?
An object with a definite shape and size used to support a load
What would be more stable? A structure that is tall and skinny or short and wide?
Short and wide
In our experiment what was an effective way of making the paper tubes more stable?
Add beans to the tubes to make the bottom heavier.
What is the purpose of structures built by animals?
Name three famous structures
Responses will vary
2 Tricks to making a strong structure
Making a strong base. Making a wide base. Using triangles. Using ties and struts. Making sure the top is not too heavy.
What do you need to do to make a structure stable?
It is not easily moved or knocked over. It has a strong wide base and stands up on its own. It can also support a load without falling over. It is steady
Name an stable natural structure
egg shell, tree, mountains etc.
Define what a load is
A weight that is supported by something or someone
What is a structure that we see or use every day that we depend on to be strong and stable?
Office buildings, roofs, houses, stairs, ladders, chairs, desks, cars, etc.