Question

thermal insulators: rubber, wood, plastic, fiberglass, foam; thermal conductors: metal, ceramic, concrete, graphite, diamond. you want to prevent an object from overheating in the sun. what would be a good material to shield it with? options: foam, metal, none of these would be good, concrete

Explanation:

To prevent overheating, a thermal insulator is needed (they resist heat transfer). From the table, foam is a thermal insulator, while metal and concrete are thermal conductors (which would transfer heat, worsening overheating).

Answer:

Foam