Science 7 Year End Review - Unit D

Science 7 Year End Review - Unit D

Multiple Choice

The human skeleton is an example of a:

• natural frame structure

• natural shell structure

• artificial frame structure

• artificial shell structure

Multiple Choice

Which of the following statements is true?

• All structures should consider their functions when being designed.

• All structures should be aesthetically pleasing.

• Environmental impact describes how a structure affects taxes in the neighbourhood where it is located.

• Operating within a budget does not generally impact choice of building materials.

Multiple Choice

The evolution of the design of the human home over history is largely due to:

• Greater amounts of people living in the world.

• Different levels of wants and needs.

• Improved materials and engineering abilities.

• None of the above.

Multiple Choice

Which of the following structures most likely inspired the design of scuba flippers?

• Snail shells

• Waves

• Duck Feet

• Tree bark

Multiple Choice

When creating a box with a lockable lid, which sorts of joints would best be suited for the structure?

• Fixed joints everywhere.

• Moveable joint everywhere.

• Fixed joints on the lid and moveable joints for the sides.

• Moveable joints for the lid and fixed joints for the sides.

Multiple Select

When Mrs. Hill drives her car to work she loads he teaching bag in the vehicle and goes. Check all the dynamic loads IN or ON the car when she drives her car to work.

• The frame of the car.

• Mrs. Hill's teaching bag.

• Mrs. Hill

• The road the car drives on.

Multiple Choice

When lifting a box that weighs 500g, a person would need to apply how much force?

• 10 N

• 5 N

• 20N

• 15 N

Multiple Choice

Which of the following joint types is best if you want to be able to remove the joint eventually?

• Welding

• Adhesive

• Interlocking pieces

• Natural joints

Multiple Choice

Mrs. Tabachniuk crushes a can of diet pepsi in a can crusher. The can collapses because it cannot withstand which internal force?

• Tension

• Compression

• Shear

• None of the above.

Multiple Choice

Which of the following statements are true?

• Structural failure always leads to structural stress.

• Structural failure sometimes leads to structural stress.

• Structural stress always leads to structural failure.

• Structural stress sometimes leads to structural failure.

Multiple Choice

In the attached image, which statement is true relating to the centre of gravity?

• In the symmetrical structure, the centre of gravity is off to one side.

• In the asymmetrical structure, the centre of gravity is in the centre line.

• In the symmetrical structure, the centre of gravity is at the very bottom.

• In ANY asymmetrical structure, the centre of gravity is ALWAYS off to one side.

• None of the above.

Multiple Choice

Ligaments need to be flexible materials because:

• Without flexibility, joints would not be able to move.

• Ligaments are not flexible.

• They prevent bones from breaking.

• They protect tendons from stress.

Multiple Choice

A student creates a bridge for a toy car to cross by folding the paper into an accordion shape. This allows the car to cross. This is an example of:

• Corrugation

• Lamination

• Design change

• Altering of joint arrangement.

Multiple Choice

In areas prone to land slides, it is best not to:

• Build houses on hillsides.

• Build houses near water.

• Farm or develop in the area.

• Create a foundation with cement.