Complete each of the following statements (1-5) with the best ending (A-E) from the box below
1Hard magnets are magnetic materials that…
2Alnico alloys are widely used nowadays as they…
3Soft magnetic materials can be…
4The industrial products of soft materials…
5Alnico alloys can…
A…operate at high temperatures.
B…have a high Curie temperature.
C…include pure iron, silicium-steels, and iron-nickel alloys.
D…retain the magnetism after being magnetized.
E…easily magnetized and demagnetized.
5 
Writing. Write the words in the correct order to form a question. Let your partner answer the questions according to the information given in the text.
1name hard is of magnet a another what ?
2chromium what high did steel and replace carbon ?
3alloy temperature why at can high Alnico operate ?
4wide of why magnets applications have do range permanent ?
5peculiarity what soft the materials of magnetic is ?
6are magnetic composed soft what materials of ?
7AC is of applications what materials the magnetic soft difference DC and of ?
Make a definition for each item in column A. Words from the column B can be used more than once.
Example: Permeability is the main characteristic for DC application.
| | are applied in materials | a high Curie temperature are easily magnetized and demagnetized |
7 
Speaking task. Make a summary of Text 4 using the exercise above.
8 Speaking task. Prepare a report for a scientific conference about future application of hard/soft magnetic materials. While speaking use the following expressions.
To start/begin with…
First of all…
After this/that…
Afterwards…
Lastly…
With reference to…
According to…
Owing to the fact that…
Therefore…
Consequently…
As a result…
Free Reading
The magnetic and electric fields are both similar and different. They are also inter-related.
Just as the positive (+) and negative (-) electrical charges attract each other, the N and S poles of a magnet attract each other.
In electricity like charges repel, and in magnetism like poles repel.
The magnetic field is a dipole field. That means that every magnet must have two poles.
On the other hand, a positive (+) or negative (-) electrical charge can stand alone. Electrical charges are called monopoles, since they can exist without the opposite charge.
Final test