Unit D Section 3

What property would you test to see if a material can be shaped easily?

• 
  Hardness

• Plasticity

• Brittleness

• Resistance to water

Which material is more ductile?

• 
  Copper

• Plastic

• 
  Wood

• Glass

Which material demonstrates greater resistance to water?

• Wool

• 
  Silk

• Rubber

• Cotton

What is deformation?

• A change in color of a material

• A change in temperature of a material

• A change in shape in a structure

• A change in weight of a structure

Rigid joints are:

• Flexible

• 
  Useless

• 
  Found in our elbows

• 
  Immovable

The MOST common types of joining used in modern building construction are

• staples and glue

• 
  mass and cement

• 
  nails, screws, rivets

• 
  interlocking pieces

An example of a fixed joint is...

• a door hinge

• 
  an elbow

• 
  a knee cap

• a staple

Ligaments in your body are...

• hard and rigid

• 
  strong under tension and hard

• flexible and rigid

• strong under tension and flexible

Glue is an example of a...

• 
  friction joint

• movable joint

• bonding joint

Nails, screws, nuts and bolts are all examples of...

• 
  fixed friction joints

• 
  fixed bonding joints

• movable joints