Grade 9 Unit D Study Guide

Grade 9 Unit D Study Guide
Electrical Principles and Technologies
1) Using diagrams, discuss the two laws of electrical charges.
2) Using an example from class, discuss how a Van de Graff generator produces and
uses electricity
3) Compare and contrast static electricity and current electricity.
4) Discuss what current is?
5) Discuss what voltage is?
6) Discuss the parts to a simple circuit.
7) Discuss the dangers of electrical shock.
8) Write two paragraphs talking about electrical safety.
9) Compare and contrast dry and wet cells.
10) Using a diagram, what are the parts of a electrochemical cell?
11) Compare and contrast primary and secondary cells.
12) Discuss electroplating and electrolysis.
13) Discuss the differences between electron flow in a conductor, insulator, and a
conductor with voltage applied.
14) Discuss superconductivity.
15) Discuss resistance and resistors.
16) Answer a question using the following formula: V = R x I
17) Create an analogy to discuss voltage, current, resistance, power source, and
18) Using a schematic, discuss the parts of a simple circuit.
19) Compare and contrast parallel and series circuits.
20) Using examples of energy transformations, discuss the four common types of energy.
21) Using a diagram, discuss how a motor works.
22) Compare and contrast direct and alternating current.
23) What is a transformer, and how does it work?
24) Discuss electromagnetic induction, and why it was such an important discovery?
25) Answer a question using the following formula: P = V x I
26) Answer a question using the following formula: E = P x t
27) Answer a question using the following formula:
Joules of Useful Output
Efficiency = _____________________ x 100
Joules of Input Energy
28) Discuss the law of conservation of energy.
29) Discuss limits to efficiency and methods to increase efficiency.
30) Discuss how turbines work to generate electricity.
31) Discuss some of the different energy sources that can be used to generate electricity.
32) Discuss some environmental concerns involved in energy production.
33) Discuss electricity and computers.
Discuss the electrical transmission of information