Heat transfer march 2021

Which of the following is not an example of raw food which must be cooked to make it safe to eat.

• Chicken

• Beef burger

• Carrots

• Sausages

Which of the following changes occur when food is cooked?

• Meat fibres are tenderised

• Starch is gelatinised

• Cellulose is softened

• All of the above

Which of the following are ways in which food can be made more appealing?

• Flavour can be improved

• Textured can be altered

• Colour can be changed

• All of the above

Which of the following are the three ways that heat is transmitted to the food.

• Conduction, boiling, microwaving

• Conduction, convection, frying

• Conduction, convection, radiation

• Absorption, boiling, microwaving

Which of the following best describes the term ‘conduction’?

• When heat is directly transmitted through a material or a substance

• The movement caused within a fluid by hotter particles rising and colder sinking

• Heat energy transferred in the form of radiation waves

• The cooling of a substance through freezing

Which of the following is an example of conduction?

• Frying

• Heat transfer from the hob to a pan

• Boiling of water

• Microwaving

Which of the following best describes the term ‘convection’?

• When heat is directly transmitted through a material or a substance

• The movement caused within a fluid by hotter particles rising and colder sinking

• Heat energy transferred in the form of radiation waves

• The cooling of a substance through freezing

Which of the following is an example of convection?

• Heat transfer from the hob to a pan

• Boiling of water

• Microwaving

• All of the above

Which of the following best describes the term ‘radiation’?

• When heat is directly transmitted through a material or a substance

• The movement caused within a fluid by hotter particles rising and colder sinking

• Heat energy transferred in the form of radiation waves

• The cooling of a substance through freezing

Which of the following is an example of radiation?

• Grilling

• Frying

• Heat transfer from the hob to a pan

• Boiling of water