Electricity Test Review Flashcards
(22 cards)
What is the basic model of matter?
The basic model of matter is an atom
What is the role of charged particles (electrons & protons) in the model of matter?
Electrons sit on the rings outside the atom and Protons sit inside the middle of the atom
State the law of electric charges
Opposite charges will attract each other and Same charges will repel each other
Compare conductors and insulators. How do certain materials allow static charge to build up or be discharged?
Conductors are materials that allow electrons to flow through vs Insulators are materials that reduce the flow of electrons
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Explain the law of electric charges with reference to common electrostatic phenomena.
The law of electric charges is that opposite charges with atrract. C.E.P is the list of things most likely to lose electrons versus gain electrons
Describe different methods (rubbing, contact, & induction) of charging objects
Rubbing- when a balloon is rubbed on a head, the balloon changes from a neutral charge to a negative.
Contact- When a negatively charged object touches a neutrally charged object which transfers the electrons
Induction- When a charged object is brought close to a neutral one but not touching creating a temporary separation of charge. Then the neutral object is grounded
What is current electricity? How is it made?
Current electricity is made by different energy sources such as windmills, power plants, etc MAGNETS
What is the difference between AC & DC electricity?
AC electricity is When the electrons flow through the path moving back and forth. DC electricity moves directly through the path
Graph and interpret electricity consumption/generation data
Can you read and understand an graph that represents electricity consumption data
Assess social, economic, and environment costs and benefits of using a renewable and a non-renewable source of electrical energy
How do different types of energy source affect the world socially, economically and environmentallly
Explain the characteristics of electric current , potential difference , and resistance?
Current - flow of electrons in a circuit
Potential Difference- the amount of elections able to be in a circuit
Resistance- objects slowing down the current of a circuit
Identify the components of a simple DC electrical circuit and describe their functions
a power source (like a battery), a conductive path (wires), and a load (like a light bulb or resistor). The power source provides the energy, the conductive path allows current to flow, and the load converts electrical energy into another form, such as light or heat.
Design and draw circuit diagrams of simple circuits.
|———O—-
| |
= <
| >
| |
|__________|
Construct simple circuits using circuit diagrams.
Battery - |l
Switch - /_
Wire ——-
Resistor- /\/\/\/
Compare, on the basis of observation, the differences between series and parallel circuits
In a series circuit, components are connected in a single path, so the same current flows through all of them. In a parallel circuit, components are connected across each other, creating multiple paths for current flow, and the voltage is the same across each branch
Design, draw circuit diagrams of, and construct simple series and parallel circuits
series paralle
|————–> |——|——-|
= < = | |
| | | | |
| O | _ | _ |
| ________ __|
Explain the characteristics of electric current, potential difference (voltage), and resistance, in simple series and parallel circuits
Current: The current is the same throughout the circuit, as there’s only one path for it to flow.in many paths the current is different Voltage:is the same on every path Resistance: slows down the current
Describe the qualitative and quantitative relationships between resistance, potential difference (voltage), and electric current, in a series circuit
quality energy vs flow describe how look and act quantitys is how much of them there is how split
Solve simple problems involving the quantitative relationship V = IR (Ohm’s Law)
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Know the relationship between the concepts of electrical power, electrical energy & electrical efficiency?
Electrical power is the rate at which electrical energy is used or generated, measured in watts (W). Electrical energy is the total amount of electrical work done, measured in joules (J) or kilowatt-hours (kWh). Electrical efficiency is the ratio of useful output energy to total input energy, expressed as a percentage, indicating how effectively an electrical device converts energy
Calculate the electrical efficiency for a given situation.
Collect, analyse & interpret data related to home electrical power usage
graph
