Jackie found a rock that has an irregular shape. The rock is small, but seems heavier than the rest of the rocks in her collection. She would like to know the volume and mass of the rock.
A. Describe in detail the methods she would use to determine the volume and mass of the rock.
B. Describe how she would use the tools to make these measurements. be sure to include the units of measure for volume and mass.
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Jackie would need to use water displacement to determine the volume of the rock. She would use a 50-ml graduated cylinder filled with enough water to be able to completely immerse the rock. On a sheet of paper, she would need to record the mililiters of water in the graduated cylinder before immersing the rock. Next, she would gently place the rock into the water within the graduated cylinder. This will cause the water level to increase, providing a new measurement to be recorded. To find the volume, the first measurement would need to be subtracted from the second. This number will be the volume of the rock, and it would be measured in mililiters.
In order to determine the mass of the rock, Jackie would need to obtain a triple beam balance, which uses grams as the measurement unit. Before beginning, she would have to make sure the balance was zeroed to insure accuracy of her measurements. Next, she would place the rock on the balance pan. Slowly, she would slide the weights to the right until the balance is once again at zero. This will yield the measurement she is looking for.
A. To determine the mass of the irregular shape rock by measuring the mass on an electric balance. To find the volume on the irregular shape rock by using the method of water displacement. First, fill a graduated cylinder with water and record the reading. Then, gently place the rock in the graduated cylinder and record the reading. Next, subtract the first reading from the second reading to get the volume.
B. By using the tools and methods, Jackie can find the density of the rock by dividing the mass by the volume. The units used would be gram for mass, milliliter for volume, and g/mL for density.
A. To find the volume of the rock, I would use the water displacement method. I would find a large beaker and fill it half way up with water. Next, I would place the rock in the water and check the new reading of the water's volume on the beaker. I would then subtract the old volume from the new volume which would give me the volume of the rock. The unit for volume is grams/liter.
B. To find the mass of the rock I would need to weigh it using a balance. The units would be grams or kilograms.
To find volume of an irregular object Jackie will use water displacment. Jackie will need to drop the rock into a graduated cylinder with a known volume of water and determine the change in volume of water. This will give her volume in milliliters of the rock. Using a triple beam balance, she will find mass in grams.
Part A: In order to find the volume of the rock you need a graduated cylinder large enough to hold the rock. Fill the cylinder half-full with water and record the volume. Drop the rock in the cylinder and record the new volume. Compare the two measurements to determine the increase, which is equal to the volume of the rock. To determine the mass of the rock we will use a digital scale. Make sure the scale is zero. Place the rock on the digital scale and record the mass. The volume will be recorded in ml and the mass is in grams.
Part B: The tools needed to find the volume and mass of the rock are a graduated cylinder and a digital scale. The measurement will be in ml for volume and grams for mass.
Place the rock into a known volume of water in a container. Find the difference in the volume after adding the rock. the difference indicates the volume of the irregularly shaped rock. For example, if you begin with 50 ml. of water and after adding the rock have 80 ml., the rock has a volume of 30 ml.
To determine the mass of the rock place it on a digital scale to read mass in grams.
A/B. To find the mass, you would use a metric scale or balance and use metric weights in the form of grams. To find the volume, find the specific gravity using a spring scale in water. Use Archimedes principle of water displacement.
A. One would use a triple beam balance or scale to find the mass of the rock. A graduated cylinder and water would be used to find the volume.
B. Place the rock on the scale to see what the mass is in grams.
To find the volume, put water in the graduated cylinder and record the water level. Then place the rock in the cylinder and record the level of water. Subtract the first recorded level from the second recorded level to get the volume of the rock in cubic units.
I would calculate the volume of the rock by using a graduated cylinder and some water. I would notice the amount of water in the tube before the rock was placed in there and then subtract the new height from the original height and this would give us the volume. This measurement would be in cubic centimeters.
To find the mass I would use a scale and then calculate the mass in grams.
Finding the mass of the rock would be simple. Jackie would use a scale to weigh the rock and then record her findings in number of grams. The volume could be determined by using displacement of water. She could put a known amount of water in a graduated cylinder and then drop in the rock. The new volume within the cylinder minus the original volume would give you the volume of the rock in milliliters.
A) To find the mass of the rock, place the rock on a triple beam balance and record the indicated mass in grams.
To find the volume of the rock, assuming that the rock will fit into a large graduated cylinder, place 25 ml of water in a 50 ml graduated cylinder. Record the exact volume of the water in ml. Carefully slide the rock down the side of the cylinder and record the new water level in ml. Subtract the difference to calculate the volume (in ml) of the rock.
B) To expand on our findings, by dividing the mass (in grams) by the volume (in ml), this will calculate the density of the rock (in grams/ml). This can be used in part to identify the type of rock.
A. To measure the volume of the rock I would use the displacement of water. To measure the mass I would use a balance and counterweights.
B. To measure the volume I would us a graduated cylinder that is large enough to hold the rock. I would then fill the graduated cylinder to a benchmark measurement on the graduated cylinder(approximately half full to avoid overflow). I would then drop the rock in the graduate cylinder, record the measurement, and then find the difference in the measurements. This would be measured in mL, but could easily be converted to cubic centimeters, which would be more appropriate for a solid such as a rock. For the mass of the rock I will, as previously mentioned, use the aforementioned balance to establish an equivalency to the counterweights, which have an already known mass. The mass will be established in grams assuming the rock's size is suitable for that unit of measurement.
To determine volume of the rock, Jackie would place the rock into a graduated cylinder and measure the displacement of the original amount of water in the graduated cylinder. For example, if 50 mL of water were in the cylinder and the water level rose 4 mL, then the final volume of the rock would be 4 mL (which is the same as 4 cm cubed). To determine the mass of the rock, a balance or electronic scale would be used. The units for measuring mass would be grams or kilograms.
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