1. A student studying a circuit diagram of a lightbulb, battery, and a switch correctly identifies it as a closer circuit. In this diagram, The lightbulb would be
   

Aan insulator

Bon

Cdisconnected

Doff

1. The force of gravity on an object on the surface of Mars is less than the force of gravity on an identical object on the surface of earth. Which of the following is a example why this is true?
   

AMars has more volume than earth

BEarth has more volume then mars

CMars has less mass than earth

DEarth has less mass then mars