The number of sentences in the passage equal the number of sentences in the test. The test passage below would be appropriate for grade 9 or 10 science students. It might be accompanied by a number of passages constructed from materials from science curriculum just below or just above the grade level of those being tested. In such a case a series of 6 tests distributed over three grade levels could be used to judge learners' understanding of science, and to place them in work groups based on their ability. There are many possible applications that can be derived from the MIT, though the structure of the test and the procedure for administering it would remain the same.
All cells have two features in common.
One is the presence of two different metals. The other is the separation of these metals by a solution that can carry an electrical current. These metals are called electrodes, and the solution is called the electrolyte. Whatever their appearance or purpose, all batteries contain electrodes and an electrolyte. A very common type of commercial cell uses a cylindrical zinc electrode with a carbon rod electrode down the centre.