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SNC1D: U3-L14
Date:
Physics Unit Review
Chapter 11: Static charges accumulate on surfaces and remain there until given a path to escape
Lesson: 1 - 5
Key Concepts
Summary
• Static electric charges
• Objects that gain electrons become negatively charged. Objects that lose
• Law of attraction and
electrons become positively charged.
law of repulsion
• Objects with like charges repel each other. Objects with unlike charges
• Conductors and
attract each other.
insulators
• When an object is charged by contact, it takes the same charge as the
• Charging by friction
charging object.
• Charging by contact
• When an object is charged by induction, it takes the opposite charge to the
and induction
charging object.
• Using and reducing
• Charged objects attract neutral objects through the process of induction.
static charges
• The principles of electrostatics are used in applications such as photocopying,
spray painting, and filtering air.
Key Terms
• charging by contact
• electrical discharge
• grounding
• lightning rod
• conduction
• electron
• induction
• neutron
• conductivity
• electron affinity
• insulator
• nucleus
• conductor
• electroscope
• law of attraction
• proton
• coulomb (C)
• electrostatics
• law of repulsion
• static charge
• electric charge
• friction
• static electricity
Chapter 13: Current electricity is the continuous flow of electrons in a closed circuit.
Lesson: 6 - 11
Key Concepts
Summary
• Current electricity
• Electrical circuits provide a complete path for electrons to flow.
• Electrical circuits
• Current electricity is the flow of electrons through a conductor in a circuit.
• Potential difference
• Potential difference or voltage (V ) is the difference in electric potential
• Electric current
energy between two points in a circuit.
• Direct current
• Electric current (I ) is a measure of the amount of electric charge that passes
• Alternating current
by a point in an electric circuit each second.
• Resistance
• In direct current, electrons flow in one direction. In alternating current,
• Series circuits and
electrons flow back and forth at regular intervals called cycles.
parallel circuits
• Resistance (R) is the degree to which a substance opposes the flow of electric
• Electrical safety
current through it.
• Series circuits provide one path for electrons to flow. Parallel circuits provide
more than one path for electrons to flow.
• Ohm’s law states that as long as temperature stays the same, V = IR
Key Terms
• alternating current
• dry cell
• ohmmeter
• resistor
(AC)
• electrical circuit
• Ohm’s law
• series circuit
• ammeter
• electrical load
• parallel circuit
• short circuit
• ampere (A)
• electric current (l )
• potential difference
• switch
• battery
• fuse
• potential energy
• volt (V)
• circuit breaker
• ground fault circuit
• resistance (R)
• voltage (V )
• circuit diagram
interrupter
• voltmeter
• current electricity
• ohm (Ω)
• direct current (DC)
Chapter 12: We can reduce our electrical energy consumption and use renewable energy resources.
Lesson: 12 - 13
Key Concepts
Summary
• Generating electricity
• Non-renewable sources used for generating electricity include fossil fuels
• Renewable and nonand nuclear energy.
renewable
• Renewable sources used for generating electricity include water, sunlight,
sources of energy
wind, tides, and geothermal energy.
• Advantages and
• There are both costs and benefits from producing electricity from renewable
disadvantages of
and non-renewable sources.
energy sources
• Electrical savings can be achieved through the design of technological
• Percent efficiency =
devices and practices in the home.
(Eout / Ein) x 100%
Key Terms
• biomass
• fossil fuels
• non-renewable energy • thermoelectric
• efficiency
• generators
sources
generating plant
• EnerGuide
• geothermal energy,
• renewable energy
• thermonuclear
• energy grid
• hydroelectricity
sources
• turbine
• Energy Star
• kilowatt-hour (kW•h)
Questions:
Summaries in text on pages 496, 540, 578.
More Questions in text
pages: 498 #2-7, 15-19, 23.
Chap11 self quiz answers in the back of the book
Page 580 # 1 – 9
Chapter 13 self quiz, answers are in the back of the book
Page 542 # 4 – 6, 10 – 12
Chapter 12 self quiz, answers are in the back of the book