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Unit 7
Electricty and Magnetism Vocab
| Question | Answer |
|---|---|
| What is a charged particle called? | Ion |
| unbalanced charges on the surface of a material (STAYS charged) | Static Charge |
| the force of attraction or repulsion between charged objects when opposites attract and like charges repel. | Electric Force |
| the invisible force in the space around a charged object with flowing electrons. This is like a magnet where the outside of the wire has an invisible swirl of electricity. | Electric Field |
| an object or divice that does not easily conduct electricity | Insulator |
| When charges move freely through a material it is then called? | Conductor |
| the release of stored energy- like lightning | Electric discharge |
| a region around a magnetic material or a moving electric charge within which the force of magnetism acts- an invisible force around the magnet. We saw it in class with metal specs flowing out of the north and into the south of the magnet. | magnetic field |
| The atoms inside of a material, that when aligned causes magnetism. (We organized this when we magnetized the sissors.) | magnetic Domain |
| the region surrounding the Earth with a magnetic field, it can protect us from solar flares | magnetosphere |
| the rate at which charges pass a given point | electric current |
| charged particles flowing through a closed wire loop | circuit |
| the potential electrical difference between two points measured in volts | voltage |
| resistance(in ohms) is equal to volts divided by current (in amps) | Ohm`s Law |
| a wire where all parts are connected one after another in a loop and where if 1 bulb goes out, they will all go out | series circuit (draw or design it) |
| a wire loop that is connected in such a branched way that if one bulb goes out the current will still flow through the other bulbs and the rest of the bulbs will not go out | parallel circuit (draw or design it) |
| the rate at which electrical energy does work or provides power where Power is equal to Voltage multiplied by Current. | calculates Electric Power P=VI |
| in ohms, it is a measurement of opposition to flow of electrical current | Resistance |
| What is a two way current, 120 charges per second or 60 cycles, from a spinning magnet in a coil called? like a motor, or power in an outlet. | Alternating current (AC) |
| a one way current, like a battery, is what type of current. | Direct current (DC) |
| something that increases or decreases the voltage of a current | Transformer |
| A solenoid is a copper wire wrapped around an iron core that when electricity is added it acts as a magnet. What else is it called? Remember that this turns off and on like the magnet at a car dump. | Electromagnet |
| natural electrical phenomenon that appears as a reddish or greenish light at the poles of the earth. | Aurora (Borealis or Australis) |
| Google an explanation, "Hey Seri". | How is an Aurora created? |
| V=IR | Calculate and understand Volts |
| V=IR | Calculate and understant amps of current |
| V=IR | calculate and understand Ohms of resistance |
| Review Ohms Law | Know your units and relationship. This was discussed and modeled in my notes and lessons. |
| Google it. It was also done in class. Bill Nye too. | What metals are magnetic? |
| Do it! | Read your class notes and labs. These can be on your quiz! Did you use your pretest/s? |
| Particles rub as hot air rises and raindrops fall they begin pulling off electrons and storing them in the clouds until they are concentrated and need to discharge. | Expain Ligtning using these terms: Static charge, discharge, attraction of charges. How does lightning work? |
| Google it. It was also in the Teacher's Notes, diagramed and discussed in class all week. | Why does a person's hair stand on end when lightning is near? How is the hair able to stand up like that? |
| What part on an atom is positive? | Proton |
| What part of an atom is negative? | Electron |
| What part of an atom has no charge? | Neutron |
| The atomic number tells us the number of... | Protons and electrons |
| The atomic mass/ weight tells us ... | Neutrons after you subtract the number of protons from the mas |
| How many electrons fit in shell 1 and 2 | 2, and 8 respectively. |
| What is in the nucleus of an atom? | Protons and Neutrons |
| The charges of a magnet are going out of which pole? | The North POLE, Just like Santa! |
| Protons + and Neutrons 0 in the nucleus and electrons- orbiting. | know what an atom is made of |
| the weight of the neucleus's protons and neutrons | mass of the atom, weight (THE LARGE NUMBER AT THE BOTTOM OF THE ELEMENT) |
| is the number of protons | atomic number (THE SMALL NUMBER AT THE TOP) |
| How do you know the number of electrons? | # protons and # electrons always match due to magnetism that holds the atom together. |
| How do you know the number of neutrons | mass- protons = neutrons |
| In a warm moist summer storm what causes a lightning strike? | In a thunderstorm, updrafts and downdrafts separate positive and negative charges within the cloud. Negative charges gather near the base of the cloud, creating electric fields the negative charge seeks the positive ground to release the energy. |
| Explain what happens when you drop a magnet down a copper pipe. | Conservation of energy: magnetism transfers energy to electrical current and heat energy. We did this in class live and in lab. make sure you finished the lab in IC. |
| Message to students: This test is divided in half and is two different scores. The atoms P N and e- and atomic structure is one score and the Magnetic/electrical energy words are a different score. | That is why you took two different tests on (atoms)Dec 5th and the 2nd one on (mag/elec)Dec 12th. |
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NJHS Physical Science
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