A circuit made of wires, a lamp, a switch, and a cell is shown at the right. What change is needed for the lamp to glow? 

Which statement best explains why the lamp does not glow? 

Which property of wood makes it a good material for the handle on a cooking tool? 

Mary-Alice likes to bring her coffee to work each morning.  However, she wonders what the best cup to bring would be if she wants her coffee to stay warm.  Which of the following materials would keep Mary-Alice’s coffee warm the longest? 

Which material is the best conductor of heat?