**Science Lab Experiment: Specific Gravity**

**Demonstration: Specific Gravity**

**Object:** To find the specific gravity of a substance. Specific gravity
is a term used to describe the relation of the weight of objects
to the weight of an equal volume of water.

**Materials:** graduated cylinder, beaker, overflow can, triple beam balance,
rock sample

**Diagram:**

**Method:** The materials were set up as shown in the diagram. The rock
was first weighed. Then the volume of an equal amount of water
was found and recorded. This water was weighed and the result
recorded.

**Data:** Weight of the rock sample = 148 grams
Volume of water displaced = 46 ml
Volume of rock sample = 46 ml

**Observations:** The weight of the rock was found to be 3.2 times the weight of water.

**Conclusions: ** A specific gravity of 3.2 for the rock sample was determined.