Gravity of Rock (page 2)
Clues for Your Investigation
- You will need different size samples of the same substance. Select rocks that look alike or pieces of a rock that has been broken. Rocks are made up of different minerals (naturally occurring substances that do not come from living things and have a definite chemical composition and a particular crystalline structure). If you have different size samples of a mineral, such as quartz, use them.
- Repeat the investigation to measure and calculate the specific gravity of each sample.
- Every substance has a certain specific gravity, so the specific gravity of a mineral or any substance can be a clue to its identity. If you determine the specific gravity of a mineral, compare the accuracy of your measurements to the known specific gravity of the mineral. You can find this information in a rock and mineral field guide.
References and Project Books
O'Donoghue, Michael. Rocks and Minerals of the World. San Diego: Thunder Bay Press, 1994.
Oliver, Ray. Rocks and Fossils. New York: Random House, 1993.
Pellant, Chris. The Best Book of Fossils, Rocks, and Minerals. New York: Kingfisher Books, 2000.
- Rocks and Minerals. London: Dorling Kindersley, 1992.
Redfern, Martin. The Kingfisher Young People's Book of Planet Earth. New York: Kingfisher Books, 1999.
Ricciuti, Edward R., and Margaret W. Carruthers. National Audubon Society First Field Guide: Rocks and Minerals. New York: Scholastic, 1998.
VanCleave, Janice. Janice VanCleave's A+ Projects in Earth Science. New York: Wiley, 1999.
Zim, Herbert S. Rocks and Minerals. New York: Golden Press, 1957.
Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state’s handbook of Science Safety.