University:
Eastern Kentucky University
Course:
PHY 101 | Conceptual Physics
Academic year:

2021
Views:

183

Pages:

2
Author:

Accinkiquicpqw

06.10.2021 Density Lab Report Lab Report: Density *Be sure to include units! Gold Mass Initial Volume 25.5 mL Final Volume 27.6 mL Volume of Gold 40.53 mL Density 40.53 / 2.1 = 19.3 grams per cm ^ 2 Initial Volume 25.5 mL Final Volume 31.9 Ml Volume of Lead Density 72.32 / 6.4 = 11.3 grams per cm ^ 2 2.1 grams Lead Mass 6.4 grams 72.32 mL Wood Mass 2 grams Initial Volume 25.5 mL Final Volume 27.5 mL Volume of Wood 1.95 mL Density 1.95/ 2 = 0.975 grams per cm ^ 2 Mass Initial Volume Final Volume Density 2.5 grams 25.5 grams 28 mL Volume of Red Cube 2.5 mL Red cube 2.5/2.5 = 1 grams per cm ^ 2 1. The red cube floats in water. What does this tell us about the density of the red cube relative to water? Did any of the other cubes you tested float in water? If so, which? When the red cube floats in the water, it indicates that the density of the red cube is relative to the water since the volume of the red cube and the mass are relatively similar. This results in the cube bobbing up and down a few times before staying still to give an accurate mL. The wooden cube did something similar considering that unlike the lead and gold cubes were not as heavy. Another cause of this can be considered since wood has oxygen and at one point relied on water for life. Density Lab Report 2. At what volume did the red cube sink? At 27.6- 25.5 indicates that the volume in which the red cube sinks is 2.1 mL. 3. In nature (for example, the Hudson River) what will cause the difference in the density of freshwater vs. brackish water vs. ocean water? Fresh water: This is not as dense because the temperature is not manipulated by other external factors. Fresh water is not responsible for as many organisms and larger environments. Brackish water: Is more dense than the fresh water but not as dense as the ocean water. Brackish water carries materials that don’t necessarily cater to the environment since it carries man made waste or materials derived from erosion. The oxygen and nutrition in the brackish water makes it not as dense. Ocean water: Increased solidity and inconsistent temperature changes alter the mass of the ocean. The colder and more sadlier water applies to the density changes. 4. Describe why you think the density of water is important for the survival of organisms. The density of the water alters the habitats of creatures and organisms that need a specific density to float, move or even consume food that can grow at a rate that would ensure the survival of the environment. Overall, the density doesn’t only cater to the creatures in that ecosystem, but to the creatures that depend on the organisms and animals that exist in that water. As long as the density can sustain the creatures and organisms in the water, the external creatures and organisms can continue depending on the water creatures for consumption which positively impacts their ecosystem as well.

Density Lab Report

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