Science 7 Unit D: 3.0 + 4.0 Review

Classifying materials based on their properties is very important. Check off all of the characteristics for classifying materials.

• Brittleness

• Force

• Ductility

• Load

• Resistance

True or False: Aesthetics, cost, and impact on the environment are also important factors to consider when designing a structure.

• True

• False

Deformation is...

• a change in shape of a structure or one of it’s part because it can support a load acting on it

• a change in shape of a structure or one of it’s part because it can’t support a load acting on it

True or False: Flexibility is the ability of a material can bend under force with breaking.

• True

• False

The advantage to nails, screws, rivets, tacks, and staples is...

• They rely on mass

• They can easily be removed if needed

• They are rigid and do not move

I am a rigid joint and do not move. Like the joints in a wooden box. What am I?

• Moveable joint

• Flexible joint

• Sturdy joint

• Fixed joint

I am a moveable, flexible joint, like the ones in your body, or hinges.

• Moveable joint

• Flexible joint

• Sturdy joint

• Fixed joint

In your opinion, why would it be important to have muscles, tendons, joints, and skin for the structure of the human body?

Choose the correct statement about structural safety.

• Before we allow the population to use the bridge, we first need monitor structural safety, and then test for structural safety after it is being used.

• The only question we are concerned about is "will this bridge work?"

• Before we allow the population to use the bridge, we first need test for structural safety, and then continue monitoring structural safety after it is being used.

• None of the above

Choose all of the environmental risk factors.

• Aesthetics

• Climate conditions

• Terrain conditions

• Cost and benefits

• Earthquake risk