Current is measured with a. a resistor. b. an ammeter. c. a volt meter. d. a closed switch.

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.