VOLUME LAB
Review- use your memory or your notes to complete this section before starting the lab.
When measuring the volume of liquids, we use a ______. We read the bottom of the curved part of the liquid, which is also called the ______. We can measure the volume of solid, regular objects by using the ______method, where we multiply _____ x W x ______. The most challenging way to measure volume is known as the ______method. We use this when we have ______shaped objects, such as a pebble or toy figurine. To do this, we pour some water into a ______and measure it. Then we drop the object in and watch as the water level rises. We take measurement of the new water level, and we ______it to find the volume of the object. It’s not too challenging after all!
Part A: Count your drops!
Estimate: How many drops of water will it take to equal 1 milliliter? ______drops
Measure: Follow the directions below to find the number of drops in 1 milliliter of water, and then answer the questions. You will need a small graduated cylinder (10 ml), a cup of water, and an eyedropper for this section.
1. Fill a small graduated cylinder with 1 ml of water.
2. Count the number of drops it takes to raise the water to 2 ml. Record the number of drops here: _____
3. How close was your estimate to the actual number of drops found in #2? (subtract) ______
4. Based on your findings, how many drops do you think it would take to make 1 liter? (use math skills!)
Show your work here:
Part B: Volume by Water Displacement
Follow the directions to find the volume of marbles using water displacement.
1. Add 50 ml of water to a 100 ml graduated cylinder.
2. Add three marbles to the cylinder and measure the volume. Record this amount in the chart.
3. Find the difference between the two measurements and record in the chart. The difference between the two measurements will be the volume of the three marbles.
4. Now add 2 more marbles for a total of 5 marbles. Now subtract the original volume (50 ml) from the new volume. Record your results in the chart.
5. Now add 2 more marbles for a total of 7 marbles. Subtract the original volume (50 ml) from the new volume.
# of Marbles / Volume of Water before adding marbles / Volume of Water after adding marbles / Volume of Marbles(difference of the two volumes)
3 / 50 mL
5 / 50 mL
7 / 50 mL
How would you find the volume of just one marble using the information you’ve gathered? EXPLAIN in WORDS below: ______.
Based on your data, what is the volume of one marble? ______
Show your work here:
Part C: Volume by Formula
Use the formula to find the volume of the tissue box on your desk and the textbook found on your table.
Show your work!!
? cm
Volume = length x width x height
? cm ______X ______X ______= ______cm3
? cm
Volume = length x width x height
______X ______X ______= ______cm3
PART D: Volume Estimation
Estimate the volume of the liquid in each container- make an educated guess. Once you are finished all of your estimates, use the graduated cylinders and/or beakers to take the exact volume measurements. Remember, use the meniscus to find the correct amount of liquid. Record your measurements in the table below.
Container / Volume Estimate (ml) / Volume Measurement (ml)A
B
C
D
E