| A | B |
|---|
| measurement standard | Defined as the exact quantity people agree to use for comparison |
| thick convex lenses | Because they bend light more, these objects have shorter focal lengths than thin convex lenses |
| deep, stable rock deposits | Offers the best hope for safe, long-term containment of radioactive wastes |
| atoms in a magnet | Are aligned according to magnetic fields |
| music | A combination of sounds with distinct pitch and specific pattern |
| kilo | means 1,000 |
| transformer | A device that increases or decreases voltage in a power line |
| independent variable | The variable plotted on the horizontal or x-axis |
| concave mirror | The bowl of a shiny spoon forms an enlarged, upright image similar to that of this object |
| insulator | A material through which electrons do NOT easily flow |
| centripetal force | When an object moves in a circular path, it accelerates toward the center of the circle as a result of this. |
| law of conservation of momentum | When two balls collide, the momentum of the balls after the collision is explained by this. |
| One benefit of the SI system | is based on multiples of ten |
| coal | Which of the following is an example of a nonrenewable source of energy? |
| Fluorescent lightbulbs | use less energy than incandescent lights |
| sound | The differences among sounds of the same pitch and loudness is described as the quality of this |
| theory | An explanation of an event that is based on repeated observations and experiments |
| Since ancient times, people have used percussion instruments... | to send signals, accompany important rituals, and entertain one another. |
| concave lens | Light is refracted and spread out by this |
| wedge | An inclined plane with one or two sloping sides forms a machine |
| galvanometer | A device that uses an electromagnet to measure electric current |
| When light is reflected from a surface, as the angle of incidence increases... | the angle of reflection increases. |
