| A | B |
|---|
| Smart student. | someone who studies. |
| Conductor. | In a ___ an electric charge can move easily. |
| Parallel circuit. | Devices are connected so there is more than one path. |
| Static charge. | The imbalance of electric charge on an object. |
| Charging by contact. | The transfer of electric charge between objects in contact. |
| Charging by induction. | The rearrangement of electric charge due to the presence of an electric field. |
| Insulators. | Materials in which electric charges do not move easily. |
| Electric discharge. | The movement of static charge from one place to another. Spark! |
| Electric current. | The flow of electric charges. |
| Electric circuit. | a closed path in which electric charges can pass. |
| Electric resistance. | The measure of how difficult it is for electrons to flow in an object. |
| Voltage. | is a measure of the amount of electrical energy transferred by an electric charge as it moves. |
| Series circuit. | Devices connected so there is only one closed path for current to follow. |
| Magnetic domain. | a group of atoms that have their magnetic poles pointing in the same direction. |
| Electromagnet. | a current-carrying wire wrapped around iron core. |
| Electromagnetic induction. | The production of an electric current by moving a magnet and a loop relative to each other. |
| Resistance. | The measure of how difficult it is for current to flow in an object. |
| Causes current to flow in a wire? | electric field |
| Energy conversion that occurs inside a battery | chemical to electrical |
| How does the electric force between two electrons change as they get farther apart? | the force decreases |
| Every electric charge is surrounded by what? | charges are surrounded by an electric field |
| Permanent magnets. | have domains that are lined up. |
| What does a simple generator rotate in magnetic field to produce current? | a wire loop |
| Increasing the voltage in a circuit increases ... | the energy transferred to the circuit |
| Describes the magnetic force between two magnets | like poles repel, force decreases as the magnets move apart, unlike poles attract. |
| Explain why an electron can push another electron even though both electrons are not touching. | Every charge is surrounded by an electric field that extends into space and exerts a force on other charges. |
| Explain why a charged balloon does not attract a person's hair if the balloon is far from the person's head. | If the balloon is too far from the person's hair, the electric force between the balloon and the hair is too weak to overcome the force of gravity on the hair. |
| How does the total charge on a doorknob change when the doorknob is charged by an electric field? | The total charge on the doorknob doesn't change. The charges in the doorknob are rearranged by the electric field. |
| Explain why even though aluminum and iron are both metals, aluminum is not a magnetic material, but iron is. | Aluminum atoms are nonmagnetic. Iron atoms are tiny magnets. |
| Atom. | the smallest particle of an element;contains protons,neutrons,and electrons. |
