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Density:Ocean Currents

By Janice VanCleave

Two red balls appear to be the same, but are they?

Density is a ratio of  mass to volume. Relative density is a comparison of the density of two or more things.For example: What is the relative density of the two balls and water in the diagram? Ball A sinks in the water, thus the density of ball A is greater than the density of water. […]

Filed Under: Physics Tagged With: density, mass, mixture, ocean currents, ocean water, polar ocean currents, relative density, relative density of liquids, salt concentration, volume

Science Project: Relative Density

By Janice VanCleave

Boats with the same density have the same buoyancy in water. As the density of the boats increase, the less buoyant are the boats.

How to Analyze Relative Density Data and Write a Conclusion Research: The data being analyzed below is about relative density and buoyancy. Relative density is a comparison of densities. Buoyancy refers to something floating in a fluid (gas or liquid). In the diagram, the Box-shaped boats are all floating in water. This means that each […]

Filed Under: Engineering Tagged With: analyze data, dependent variable, independent variable, relative density, variables, write conclusions

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Welcome to Janice’s Science Extravaganza!

The spoon hanging from the string vibrates when struck and these vibrations are transmitted through the string and the sound is amplified by the plastic cups. ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years. MORE.....

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