Question

Q4 Jess wants to investigate which materials are best at keeping

She has three cups -
one metal cup, one cardboard cup and one plastic cup.
She plans to fill each cup with hot water from a kettle and put lids on them.
plastic-
- metal
- cardboard
(WS
After five minutes, Jess will use a thermometer to measure the temperature of the water in each cup.
(c) In which cup do you expect the temperature of the water will have decreased the most
after five minutes? Explain your predicton

Answer 1

The temperature of water in the metallic cup will decrease the most after five minutes
Followed by that of the plastic cup. Then the cardboard cup
This is because metals are good conductors of heat compared to plastic and cardboard which are rather insulators of heat.

Answer 2

After 5minutes the temperature in the metal cup will decrease the most

Step-by-step explanation:

this is because metal is a very good conductor of heat, this property also allows it to lose heat to the surrounding, while plastic and cardboard are insulators and they tend to retain the heat hence the water is warm after 5 minutes.