Science ILLA 19th Sep

What is viscosity?

• A liquid's resistance to flow.

• a liquids flow.

• a liquid

• gas to solid.

Low viscosity can be described as...

• liquids that flow quickly

• liquids that flow slowly

Peanut butter is an example of a...

• High viscosity liquid

• Low viscosity liquid

• Isnt a liquid at all! Don't be silly.

Which of these factors affects Viscosity?

• Temperature

• Color

• Taste

Which material would have the lowest viscosity at normal temperatures?

• Peanut Butter

• Jelly

• Milk

• Marshmallow Fluff

What will help prevent the yeast dough from forming a crust or drying out during fermentation?

• applying oil

• applying sugar

• applying salt

• applying flour

If the temperature of the liquid is is too high when preparing yeast bread, it will:

• cause the yeast to overproduce steam

• will not activate the yeast

• will not allow the yeast to produce enough steam

When making yeast bread, punching down the dough releases:

• carbon dioxide

• carbon monoxide

• hydrogen

• oxygen

If fermentation fails to occur when baking yeast bread products, what will happen?

• dough will have too much gas and explode

• dough will not rise

• dough will be dry

• dough will not be elastic

Diagram shows the food for a teenager at tea time.

Which of the following microorganisms is used to produce the food?

• Yeast

• Virus

• Bacteria

• Protozoa