Density
Density is a measure of how much mass is contained in a given volume. It is a fundamental property of matter and is useful in identifying substances and predicting their behavior under certain conditions.
Calculating Density
The formula for calculating density is:
Density = Mass / Volume
Where:
- Density is measured in grams per cubic centimeter (g/cm3)
- Mass is measured in grams (g)
- Volume is measured in cubic centimeters (cm3)
Density of Common Substances
Here are the approximate densities of some common substances:
| Substance | Density (g/cm3) |
|---|---|
| Water | 1.0 |
| Ice | 0.92 |
| Iron | 7.9 |
| Aluminum | 2.7 |
| Gold | 19.3 |
Density and Buoyancy
Objects with a density greater than 1 g/cm3 will sink in water, while those with a density less than 1 g/cm3 will float. This principle is the basis for understanding buoyancy and is why some objects float while others sink.
Study Guide
- What is the formula for calculating density?
- What are the units of measurement for density, mass, and volume?
- Explain the relationship between the density of an object and its buoyancy in water.
- Calculate the density of a substance given its mass and volume.
- Compare the densities of different substances and predict their buoyancy in water.
Understanding density is essential for comprehending various scientific concepts, such as buoyancy, material identification, and the behavior of matter under different conditions.
.◂Science Worksheets and Study Guides Sixth Grade. Our impact on earth
Study Guide
Our impact on earth 
Worksheet/Answer key
Our impact on earth Worksheet/Answer key
Our impact on earth Worksheet/Answer key
Our impact on earth Vocabulary/Answer key
Our impact on earth
Worksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
EARTH AND SPACE SCIENCE
Earth’s Systems
Analyze and interpret data (e.g., tables, graphs, maps of global and regional temperatures; atmospheric levels of gases such as carbon dioxide and methane; rates of human activities) to describe how various human activities (e.g., use of fossil fuels, creation of urban heat islands, agricultural practices) and natural processes (e.g., solar radiation, greenhouse effect, volcanic activity) may cause changes in local and global temperatures over time.
Earth and Human Activity
Analyze evidence (e.g., databases on human populations, rates of consumption of food and other natural resources) to explain how changes in human population, per capita consumption of natural resources, and other human activities (e.g., land use, resource development, water and air pollution, urbanization) affect Earth’s systems.
Implement scientific principles to design processes for monitoring and minimizing human impact on the environment (e.g., water usage, including withdrawal of water from streams and aquifers or construction of dams and levees; land usage, including urban development, agriculture, or removal of wetlands; pollution of air, water, and land).