Grade 7 Science, Topic 5 - How Structures Fail Study Guide With Complete Questions And Answers.
2 views 0 purchase
Course
FALI
Institution
FALI
What will happen if a great enough force acts on a structure? - correct answer The structure will begin to fail.
What is a lever? - correct answer A lever is a device that can change the amount of force needed to move an o...
What will happen if a great enough force acts on a structure? - correct answer The
structure will begin to fail.
What is a lever? - correct answer A lever is a device that can change the amount of
force needed to move an object.
What is the pivot called that is used in some types of levers? - correct answer
Fulcrum
Explain how the wind pushing against one side of a flagpole can act as a lever. - correct answer
The flagpole acts as a lever with the force of the wind pushing and bending the top of the pole. This
external force causes an internal force which pushes the pole at the bass in the opposite direction.
External forces can cause what in a structure? - correct answer Internal forces.
Each type of internal force can cause different kinds of what? - correct answer
Different kinds of damage.
Name 3 types of internal forces that can cause a structure to fail. - correct answer 1.
Shear
2. Bend and Buckle (which is a combination of tension and compression)
3. Torsion
Solid materials are never perfectly uniform. What flaw do they all contain? - correct answer
Microscopic cracks or weaknesses
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller RealGrades. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
