1. State any ten examples of good conductors of heat. 2. Write down five uses of good conductors.

Good Uses:

Utensils Food can be cooked Water can be boiledHomes can be warmed Shirts can be ironed

Conductors of Heat:

AluminumLeadBrassBronze MercuryGoldSliver Copper

By definition, 1 astronomical unit (AU) is the distance from the Earth to the Sun, and this is equivalent to around 150,000,000 km, or 1.5 x 10^8 km. This is also equivalent to 1.5 x 10^11 meters. Therefore, if we are given the distance in meters, we have to divide by 1.5 x 10^11 to convert to AU. This is the third choice.