The night before the exam, sleep. A rested mind recalls what a tired one has only read.

Natural Phenomena — quick quiz

5 AP TET-pattern questions on Natural Phenomena. Instant scoring and solutions, no signup — see where you stand in a few minutes.

Question 1 of 5

Hard

In a simple electric circuit with a battery, a bulb, and a switch, the bulb does not glow when the switch is open. When the switch is closed, the bulb glows. A student replaces the connecting wires with plastic strings. Even with the switch closed, the bulb does not glow. What is the best explanation?