Question

First question Aliyah completed four investigations to examine how heat transfers in different situations.

Investigation #1
Investigation #2
Investigation #3
Investigation #4
Aliyah placed a bowl of ice cream in the sun, and the ice cream began to melt.
Aliyah placed an ice cube on a heating pad, and the ice cube began to melt.
Aliyah held a piece of chocolate in her hand until it began to melt.
Aliyah placed a piece of cheese on a burger that had just been cooked, and the cheese began to melt.
Which investigation was NOT an example of conduction and why?
a) Investigation #1 is an example of radiation because the thermal energy from the Sun is traveling through space to heat the ice cream and cause it to melt.
b) Investigation #2 is an example of convection because the thermal energy from the heating pad is rising to melt the ice.
c) Investigation #3 is an example of radiation because the thermal energy from her hand is traveling to the chocolate causing it to melt.
d) Investigation #4 is an example of convection because the thermal energy from the burger is rising causing cheese to melt.

Answer 1

Investigation #1 is not an example of conduction; instead, it illustrates radiation as the sun's energy melts the ice cream without direct contact.

Step-by-step explanation:

The investigation that was not an example of conduction is Investigation #1. In this scenario, the radiation from the sun heats the ice cream without direct physical contact, which is different from conduction that requires contact between objects. The correct option is:
a) Investigation #1 is an example of radiation because the thermal energy from the Sun is traveling through space to heat the ice cream and cause it to melt.