Conduction, Convection, Radiation1-4-12

I STARTER:

Tape in your warm up, show your work, and properly grid you answer.

II PRACTICE:

Today we will be participating in a lab in which you will decide if we are using

conduction, convection, or radiation in cooking demo’s. You will summarize the steps for the lab in your practice section.

II PRACTICE: Demo # 1:

1. Check to make sure hotplate is on and preheating.

2. Pour a small amount of oil in metal pan and drop in a small pinch of popcorn kernels.

3. Place pan on hot plate inside of vent hood & close vent hood.

4. Draw and label results in Application Section

* Make sure you tell us whether this is an

example of conduction, convection, or

radiation.

II PRACTICE: Demo # 2:

1. Pour a small amount of oil in glass beaker and drop in a small pinch of popcorn kernels.

2. Heat beaker in microwave.3. Draw and label results in Application

Section. * Make sure you tell us whether this is

an example of conduction, convection,

or radiation.

II PRACTICE: Demo # 3:

1. Pour a small amount of oil in air popper machine and drop in a small pinch of popcorn kernels.

2. Heat popcorn in air popper.3. Draw and label results in Application

Section. * Make sure you tell us whether this is

an example of conduction, convection,

or radiation.

III Application: • In this section you should have

draw what you saw happen in each demo and labeled each demo as conduction, convection, or radiation.

IV CONNECTION:• Copy the chart below and if each example

is conduction, convection, or radiation.

Example:

Conduction, Convection, or Radiation???

Heating yourself in front of a fireplace.

Heater on one end of a pool heating the whole pool.

Sun’s rays heating the Earth.

Licking a popsicle just removed from freezer and it sticks to your tongue.

Roasting marshmallows on a campfire.

V EXIT:• Write a well written paragraph (4-5

sentences!) summarizing what you learned today. Also, list any questions you may still have about conduction, convection, radiation.