Question

thermal insulators

• rubber
• wood
• plastic
• fiberglass
• foam

thermal conductors

• metal
• ceramic
• concrete
• graphite
• diamond

you want a cup that doesnt burn your hand when filled with a hot drink. what would be a good material to use for this?
plastic
none of these would be good
graphite
metal

Explanation:

To find a good material for a cup that doesn't burn the hand with a hot drink, we need a thermal insulator (materials that don't conduct heat well). Thermal insulators are in the left table: Rubber, Wood, Plastic, Fiberglass, Foam. Thermal conductors (right table) like Metal, Ceramic, etc., conduct heat and would burn the hand. Plastic is a thermal insulator, so it's a good choice. Graphite and Metal are conductors, so they're bad.

Answer:

A. Plastic