Question

Noah drops a rock with a density of 1.73 g/cm3 into a pond. Will the rock float or sink? Explain your answer.

Answer 1

The rock will sink because the rock is denser than the water

Answer 2

Answer: It sinks

Explanation: Density of water is approximately $1.0 gcm^{-3}$

Any substance that has higher density than that of water will sink and any substance that has density lesser than water will float.

$Density=\frac{mass}{volume}$

Thus a higher density substance has more mass for the amount of volume it displaces and hence it sinks.

When Noah drops a rock in water, the rock will sink as it has a higher value of density $(1.73gcm^{-3})$ than that of water $(1.0 gcm^{-3})$