Building Blocks
What are the three principal particles that make up an atom?
What are protons, neutrons, and electrons.
What force do two objects with like charges demonstrate?
What is repulsion
What is the outermost electron shell of an atom called?
What is the valence shell?
Electrical current is defined as the flow of what?
What are electrons?
What do the letters 'DC' stand for?
What is Direct Current?
What part of the atom carries a positive charge?
What is the proton.
What force do two objects with unlike charges demonstrate?
What is attraction
How many valence electrons does a good conductor typically have?
What is 1-3?
What theory describes current flow as one electron knocking an electron out of orbit in the next atom, and so on down the line?
What is the electron or bump theory?
What do the letters 'AC' stand for?
What is Alternating Current?
What part of the atom carries a negative charge?
What is the electron?
Finish the basic law of physics: 'Like charges ___, and opposite charges ___.'
What is repel and attract
How many valence electrons does an insulator typically have?
What is 7-8?
In bump theory, what happens to the striking electron's energy after it knocks the next electron loose?
What is transferring energy to the next electron it strikes?
What type of current flows in only one direction?
What is direct current?
What part of the atom has no charge at all?
A positively charged body has a ______ of electrons.
What is a shortage or deficit?
A material with 4 valence electrons, whose resistance decreases as it heats up — what is it called?
What is a semi-conductor?
As the difference in electron quantity between the negative and positive terminals increases, what else increases?
What is voltage (potential)?
Which type of current reverses its direction of flow at regular intervals?
What is alternating current?
The atomic number of an element equals the number of ______ in the nucleus. Fill in the blank.
What are protons?
What are real-world examples of conductors
What are copper, silver, or gold?
What is the maximum number of electrons any valence shell can hold?
What is 8?
What is created by causing an excess of electrons to build up at one terminal?
What is voltage or EMF?
Name one real-world example of direct current from your notes.
What is a battery?