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Year 7 food science and heat transfer

Total questions: 10

Worksheet time: 6mins

Name
Class
Date
1.

Select the two conditions needed for dextrinisation to occur:

a)

Starch

b)

Baked products

c)

Grill heat

d)

Dry Heat

2.

Dry heat is required for dextrinisation

a)

True

b)

False

3.

Which term best describes the browning of apples when exposed to oxygen in the air?

a)

Encyclopaedic browning

b)

Extreme browning

c)

Enzymic browning

d)

Exciting browning

4.

Define the term 'Raising Agent'

a)

An ingredient that is added to make the product rise.

b)

A process that adds CO2 to a mixture.

c)

An ingredient or process that introduces a gas into a mixture so that it rises when cooked.

d)

An ingredient or process that has magical powers.

5.
What is the transfer of heat by movement of liquids or gases?
a)
conduction
b)
convection
c)
radiation
6.
What is the transfer of heat by direct contact?
a)
conduction
b)
convection
c)
radiation
7.

Which best explains why a wooden spoon can be used to stir hot soup on the stove?

a)

Wood is a good conductor of heat and transfers energy to the spoon.

b)

Wood is a poor conductor of heat and transfers energy to the spoon.

c)

Wood is a good conductor of heat and does not allow the transfer of energy to the spoon.

d)

Wood is a poor conductor of heat and does not allow the transfer of energy to the spoon.

8.

Sarah is stirring her hot chocolate with a metal spoon, and she notices that the spoon is getting hot. This is most likely caused by which type of heat?

a)

conduction

b)

convection

c)

radiation

d)

insulation

9.

How is heat transferred in radiation?

a)

through solids

b)

through liquids

c)

through time

d)

through air

10.

What is the function of fat in shortcrust pastry making?

a)

It adds colour

b)

It adds flavour

c)

It limits the amount of gluten formed

d)

It makes the pastry rise