You just have to know all the equations you might need to solve any problem in physics. You may NOT use a calculator on the exams. You have 170 minutes to solve 100 physics problems with multiple-choice answers. They also ask questions about typical physics labs and about famous experiments. The physics subject test covers all of the material from all of the courses offered in the physics major, including electronics, quantum mechanics, and statistical/thermal physics. These tests are available only in paper form and are administered at 2 pm on the April, October, and December test dates. GRE Subject tests tend to cover all of the curriculum that is usually taken by an undergraduate majoring in the subject. It is similar to an achievement test, but it is three times as long and much harder. The GRE Subject test is an extremely important factor in determining where Grinnell students are admitted for graduate study in physics. Another caveat to keep in mind is that, although this exam is offered frequently, you cannot take the computer-administered exam more than once in a six-month period. Because of this "customization" of the questions, you cannot go back and change any of your answers to previous questions. On the other hand, if you answer hard questions incorrectly, the computer will start pitching you easier ones. If you keep answering questions correctly, the computer will ask you harder and harder questions until you get one wrong. The computer decides which questions to ask you next based on the correctness of your previous responses. You answer about 27-33 questions in each of three sections. In the computer-administered form, the exam takes only half as much time. Each of the seven sections takes half an hour to complete, so the whole exam takes three and a half hours.
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In the written form, the exam has two sections of each kind (verbal, mathematical, and analytical) plus one extra experimental section of some kind so that ETS can gather statistical info on new test questions. The computer-based exam is available much more frequently, and you can see your score immediately, but it has some disadvantages you should know about.
Typically you need to register by mail at least six weeks in advance of your exam, and you don't find out your scores until about a month after the exam. The written exam is administered three times a year, in April, October, and December at 8 am. It is possible to take the exam either in written form (by filling out bubble sheets) or on the computer. In any case, you may find it beneficial to take a practice exam or two before the big day. Most Grinnell physics majors do not have much difficulty on the general GRE, although non-native speakers of English may find the verbal section challenging.
The analytical part consists of logic questions and puzzles.
The verbal and mathematical parts are quite similar to the SAT in material covered, style of questions, and level of difficulty. The general GRE consists of three parts: verbal, mathematical, and analytical.
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You can easily get practice materials from them, both free stuff and copies of former exams. The ETS maintains a GRE home page that has a lot of relevant information. There are two different kinds of GRE exams that you may have to take: the general GRE, and the subject GRE. These are the same people who administer the SAT and Achievement exams you likely encountered in high school. The GRE, or Graduate Record Exam, is the generic name for a number of multiple-choice style exams administered by the Educational Testing Service.
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