F&D Materials revision 2

Creep is the _____

• slow gradual extension of material under a constant load.

• failure of a material due to repeated alternating stresses over a long period of time.

• failure of a material where it separates due to excessive stress

Fatigue is the _____

• slow gradual extension of material under a constant load.

• failure of a material due to repeated alternating stresses over a long period of time.

• failure of a material where it separates due to excessive stress

Fracture is the _____

• slow gradual extension of material under a constant load.

• failure of a material due to repeated alternating stresses over a long period of time.

• failure of a material where it separates due to excessive stress

Simple sugars are the building block of?

• Lipids

• Proteins

• Carbohydrates

Amino acids are the building block of?

• Lipids

• Proteins

• Carbohydrates

Fatty acids are the building block of?

• Lipids

• Proteins

• Carbohydrates

The shelf life of a product can be determined by?

• using a rough estimation.

• using storage trials to estimate the chemical and physical stability of the food.

• waiting for customers to complain.

• using feedback from a university.

Select two environmental factors that affect the shelf life of a food product.

• Temperature

• Humidity

• Sound level

• Room height

Select three food property factors that affect the shelf life of a food product.

• Water activity

• Density

• Presence of preservatives

• Taste

• Total acidity

An example of a composite material used in the food and drink industry would be?

• A carbon fibre kayak

• Kevlar fibre long sleeved gloves worn when using knives to cut food.

• Fibre glass food tanks

• MDF pipe work