Heat Transfer - Food Science

What type of heat transfer is used when cooking in a microwave?

• convection
• conduction
• radiation

When ice melts to water, it is called a ______ of state

• change
• calorie
• joules

Energy that travels as electromagnetic waves is called ______

• conduction
• convection
• radiation

Energy that is transferred from an object at a higher temperature to an object at a lower temperature is called______

• Heat
• Temperature
• Radiation

One _____ is equal to the amount of energy needed to raise the temperature of 1g of water by 1 degree C.

• Calorie
• Heat
• Thermal Energy
• Temperature

An ______ is a material that is a poor conductor of heat.

• Conductor
• Insulator

______ occurs when a cooler, denser mass of a liquid or gas replaces a warmer, less dense mass of a gas or liquid by pushing it upward.

• Conduction
• Convection
• Radiation

Which will most likely occur when raw egg is placed on black pavement on a hot, summer day?

• The pavement will conduct the heat and cook the egg.
• The egg will reflect the heat and make the pavement hotter underneath.
• The egg will absorb the heat  and leave the pavement hotter underneath.
• The pavement will absorb the heat from the egg, and the egg will stay raw.

Which best describes the process of convection?

• Convection is the primary way  heat travels  through rays.
• Convection is the primary way heat travels  through metals.
• Convection is the primary way heat travels  through appliances.
• Convection is the primary way heat travels  through liquids and gasses.

Which best explains how bacon is fried on a stove burner?

• The bacon creates a convection current, the  heat rises to the pan, and then rises to the stove burner.
• The bacon transfers heat directly to the pan, and the pan transfers heat directly to  the stove burner.
• The stove burner radiates heat to the pan,  and the pan radiates heat to the bacon.
• The stove burner transfers heat directly  to the pan, and the pan directly  transfers heat to the bacon.