Bridges
What are bridges made out of?
Wood, Stone, or Metal
What is an engineer?
a person who designs, builds, or maintains engines, machines, or public works.
What can you use as a joiner material when building?
Tape, Plasticine, glue, etc
What is the strongest shape (Not for pillars but for everything else)
Triangle
What are three things a bird needs from a house?
Shelter, food, and water
Name three kinds of bridges
Suspension, Truss, Beam, Arch
What does it mean when something is strong?
able to withstand great force or pressure.
Name 3 things you could you build with recycled materials?
All sorts of answers!
Is a shape with a wide base or narrow more stable (feet apart or feet together?)
Wide base
What was the first way we tested the birdhouses for durability?
We hung them inside
Name a famous bridge
Many answers! Up to Mr. Hennessey
What does stable mean?
(of an object or structure) not likely to give way or overturn; firmly fixed.
Which material made the strongest little pig's house?
Brick/lego
What was more stable the short tube, medium, or tall (when we lifted them on a tray)?
Short
What's the second step we took in testing the birdhouses durability?
We hung them outside
How do suspension bridges work?
Up to Mr. Hennessey if good answer
What is a structure?
the arrangement of and relations between the parts or elements of something complex
What are two way you can stay safe when building in class?
Listen to instructions, don't touch the glue gun, be careful cutting, ask Mr. H to cut hard plastic, etc
Why is the cylinder the best shape for a pillar?
Because it doesn't have corners so the weight goes around evenly.
How did we keep track of the changes to our bird houses?
We used a log
What is the stone at the top of an arch bridge called?
Keystone
What does durable mean?
able to withstand wear, pressure, or damage; hard-wearing.
What materials could you use to make a tree house strong, stable, and durable?
many answers
Why is the arch such a strong shape?
Because the weight is evenly spread from the top down into the ground.
What were the first steps we took when building the bird houses?
We researched and planned