VI. ASSESSMENT POST TEST Write the letter that correspond to the best answer on the space provided before each number 1. When two magnets attract, they a. Push apart b. get colder c. change color d. pull together 4 | l-' .- :4 c SENIOR HIGH SCHOOL}? Revised by: Mrs. Geraldine Figueras GENERALPHYSIIS 2 I] MODULE 3 2. The force of magnetism is stronger when magnets are a. Cold in. round c. farther apart d. closer together 3. What would increase the strength of an electromagnet? a. Increasing the amount of current owing through the wire. b. Inserting a wooden core inside the coil c. Changing the direction of the current d. Decreasing the number of coils of wire 4. The strongest part of a magnet is a. The bars b. the poles c. the force eld d. the middle 5. What part of an atom is the most responsible for magnetism? a. Proton in. electron c. neutron d. nucleus _6. Magnetic domains are a. regions that may or may not be magnetized. c. regions of atoms magnetically aligned b. clusters of atoms randomly aligned d. blocks of material _7. What can you make visible by sprinkling iron lings around a magnet? a. the areas called domains c. the magnetic field lines b. the magnetic forces d. the north and south pole 8. A magnet can lose its magnetic properties if you a. drop or hit the magnet b. heat up the magnet c. put the magnet in a strong magnetic eld that is opposite of its own d. all of the above 9. A tiny region ion a magnet where all the atoms are grouped together and their poles are aligned. a. South b. north c. commutator d. domain _1El. Which type of rock is naturally magnetic? 3. Granite b. limestone c. lodestone d. sandstone 11. State where you will see repulsion or attraction between the bar magnets ENE] _12. Which of the following diagrams correctly shows the direction in which the com pass needle will point? _13. Maria sprinkles iron lings on a piece of cardboard placed on top of a bar magnet. Which configuration will the iron lings take? cm a'i/ a C:D c_ 757/ r? b. d. 1' \\: _14. Among the following diagrams, which correctly illustrates a magnetic eld? ._:@: ..Q@ _15. What characteristics do magnetic substances have? a. They can give a "shock" when you touch them. b. They can push or pull objects they are not touching. (2. They are always black and cold to touch. d. They fall faster than other objects when you drop them