Physical Science Benchmark 4 Study Guide

Thermal energy is measured in _____.

• Meters

• Kilograms

• Watts

• Joules

Which is not a simple machine?

• Pulley

• Lever

• Wedge

• Fan

You stir hot stew with a spoon, the handle of the metal spoon gets hot.

• Conduction

• Convection

• Radiation

A quantity that has both magnitude and direction.

• Force pair

• Velocity

• Vector

• Acceleration

The SI unit for power is _____.

• Joules

• Kilograms

• Watts

• Newtons

A device that increases or decreases voltage in a power line is called a _____.

• Transformer

• Generator

• Motor

• Commutator

The SI unit for force is _____.

• Joules

• Watts

• Kilograms

• Newtons

The tendency of an object to resist changes in its state of motion.

• Inertia

• Time

• Speed

• Vector

Hotter particles have more entropy.

• True

• False

Current that reverses direction in a regular pattern is called _____.

• Direct current

• Alternating current