Question

independent practice (ip): kitchen chemistry: ratios, energy transfer, and temperature
name: luzmaria date: 2/11/20

part 4: energy transfer
match each example with the correct type of heat transfer.

heat transfer types
a. conduction
b. convection
c. radiation

1. a cookie sheet touching cookie dough ______
2. hot air moving around inside an oven ______
3. heat coming from the ovens heating element ______
4. a frying pan heating an egg ______
5. warm soup circulating in a pot ______

Explanation:

Define heat transfer types

Heat transfers via three main mechanisms:

• Conduction: Direct contact transfer.
• Convection: Fluid movement circulation.
• Radiation: Electromagnetic wave propagation.

Analyze direct contact examples

• Question 1: A cookie sheet directly touches cookie dough. This direct contact represents conduction.
• Question 4: A frying pan directly touches and heats an egg. This direct contact represents conduction.

Analyze fluid circulation examples

• Question 2: Hot air moves around inside an oven. Air is a fluid, and its circulation represents convection.
• Question 5: Warm soup circulates in a pot. Soup is a fluid, and its circulation represents convection.

Analyze electromagnetic wave examples

• Question 3: Heat comes from the oven's heating element. This infrared electromagnetic wave propagation represents radiation.

Answer:

Question 1

• A. Conduction (Correct answer)
• B. Convection
• C. Radiation

Question 2

• A. Conduction
• B. Convection (Correct answer)
• C. Radiation

Question 3

• A. Conduction
• B. Convection</mcq-correct>
• C. Radiation (Correct answer)

Question 4

• A. Conduction (Correct answer)

<mcq-option>B. Convection

• C. Radiation

Question 5

• A. Conduction
• B. Convection (Correct answer)
• C. Radiation