1. Circle the devices that are energy converters.

(a) television
(b) pencil
(c) calculator
(d) magazine
(e) hot plate
(f) cell phone

To identify the devices that are energy converters, we need to understand what an energy converter is. An energy converter is a device that transforms one form of energy into another.

Let's evaluate each device based on this definition:

(a) Television: A television is not an energy converter itself. It requires electrical energy to function, but it does not convert energy.

(b) Pencil: A pencil is not an energy converter. It does not transform energy.

(c) Calculator: A calculator also does not convert energy. It uses electrical energy to perform calculations.

(d) Magazine: A magazine is not an energy converter. It is a medium for storing information but does not convert energy.

(e) Hot plate: A hot plate is indeed an energy converter. It converts electrical energy into heat energy.

(f) Cell phone: A cell phone is not an energy converter in itself. It requires electrical energy to function but does not convert energy.

Therefore, the correct answer is:

(e) hot plate

The hot plate is the only device on the list that is an energy converter.