AND 100 PTS 1. Find the volume of an object with linear sides or a common geometric shape.

These supplies are needed: a metric ruler and an object with linear sides or a common geometric shape

A. Volume equals length times width times height (V = l × w × h). The amount of space that an object takes up is its volume.

B. Measure in centimeters (cm) the length, width, and height of the object and record your answers.
Note: Be sure you included the units (cm) with each measurement.

C. Multiply the length by the width by the height. This is the volume of the object.

Volume = l × w × h = × × = cm3

Since you went from linear measurement (cm) to cubic measurement (cm3 ), the units change and your answer will be in cubic centimeters (cm3 ).

2. Find the volume of an irregularly-shaped object.

These supplies are needed: string, water, small rock, graduated cylinder

A. Pour water into a graduated cylinder until it is about half full, stopping at one of the level marks on the cylinder.
B. Read and record the level of the water. This reading is the volume of the water. Be sure you are reading at the lowest point of the curved surface or meniscus. Study Figure 1 above to see how to read the correct level.

C. Tie the string on the rock and lower the rock completely into the water. Let it settle at the bottom.

D. Record the level of the water with the rock in it. This reading is the volume of the water and the rock.

E. Find the volume of the rock by subtracting the reading of the water from the reading of the water and the rock.
(water and rock) - (water) = cm3. Your answer is the volume of the rock.

3. Compose a scientific summary of your method, observations, data, and conclusions. In addition, be sure to answer the questions below in your report.

Why does the first method for determining volume work only for a regular-shaped object?

Will the second method for determining volume work for any object or just an odd-shaped one? Why?

Is one method of measurement more accurate than the other? Why or why not?

Would the displacement method of measurement work for a cube of sugar? What about a cork? Why?

What did you find out from this investigation? Be thoughtful in your answer.