1.7 Vocabulary for electricity

Natural sciences

Grade 8

Energy: electricity, heat and light

Module 8

Vocabulary for electricity

• There are words and terms that you will need to know before you study more about electricity.

  

Assignment 1:

Complete the following table:

Assessment of Symbols

Were you able to identify the symbols correctly?

[LO 2.4]

The contributions made by scientists and inventors through the centuries have contributed greatly to our understanding of and the design of appliances that make our lives easier.

Assignment 2:

Find information about the following scientists and their work and make a poster to display your information in the class.

• Benjamin Franklin
• Nicola Tesla
• Alessandro Volta
• Georg Simon Ohm
• André Marie Ampère
• Charles Coulomb

You will notice that many of the terms that we use are derived from the name of the scientist who did the research.

Assessment of Poster on Scientists

Were you able to gather and communicate the information?

[LO 1.1; LO 1.2; LO 1.3]

Assessment of human Endeavour

Were you able to see the value of the work of the scientists?

[LO 2.4]

Assessment

LO 1: Scientific investigations:

The learner will be able to act confidently on curiosity about natural phenomena, and to investigate relationships and solve problems in scientific, technological and environmental contexts.

This is evident when the learner:

• plans investigations;
• conducts investigations and collects data;
• evaluates data and communicates findings.

LO 2: Constructing Science Knowledge:

The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

This is evident when the learner:

2.4 applies knowledge.

LO 3: Science, Society and the Environment

The learner will be able to demonstrate an understanding of the interrelationships between science and technology, society and the environment.

This is evident when the learner:

3.1 understands science as a human endeavour.

Memorandum

VOCABULARY FOR ELECTRICITY

Activity1

Assignment 1:

There is a list of words and terms that one needs to know before further studies in electricity can be undertaken

Assignment 2:

The contributions made by scientists through the centuries have contributed greatly to our concept of and to the design of machines that enhance our lives.

Among the important scientists that learners have to investigate, we have:

• Benjamin Franklin
• (1706-1790)
• 1752 - While flying a kite with a metal key during a thunderstorm, he observed sparks that indicated that lightning was charged with electricity.
• He initially thought that electricity was some magical liquid.

• Nicola Tesla:
• (1856-1943)
• He made the idea of alternating current acceptable and designed the Tesla coil, a transformer with an air core, used for producing high frequencies. It is used in radio technology.
• Alessandro Volta:
• (1745-1827)
• He discovered a method for separating two metals by means of electricity directed through chemical fluids in 1800. This produced the first electrical cells. He combined cells to produce the first battery.

• Georg Simon Ohm:
• He showed that all conductors offer resistance to an electric current.

• André Marie Ampère:
• (1775-1830)
• He discovered the electromagnetic effect, and developed the idea of the solenoid.

• Charles Coulomb:
• (1736-1806)
• He discovered the charges and forces that attract and repel in magnets.