Conceptual Physical Science Explorations
2nd Edition
ISBN: 9780321567918
Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki
Publisher: Addison Wesley
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Textbook Question
Chapter 8, Problem 1RAT
Pumice is a volcanic rock that floats in water. The density of pumice is
(a) less than the density of water.
(b) equal to the density of water.
(c) more than the density of water.
(d) But being a rock, it sinks!
Expert Solution & Answer
Solution
To determine: The correct option for the statement “Pumice is a volcanic rock that floats in water. The density of pumice is”.
Answer:
The correct option for the statement “Pumice is a volcanic rock that floats in water. The density of pumice is” is option (a).
Explanation:
According to the Archimedes principle, the condition for floating of a body is that the buoyant force exerted on the body by the fluid should be equal to the weight of the body. It can be more explained in terms of the density of a body. A body will float on the water surface if it has a lesser density than that of water. If the body has a higher density than that of water, then it will sink in the water.
Pumice is a type of volcanic rock that floats in water because the density of pumice is less than the density of water.
Conclusion:
Therefore, the correct option for the statement “Pumice is a volcanic rock that floats in water. The density of pumice is” is option (a).
Chapter 8 Solutions
Conceptual Physical Science Explorations
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