SCIENCE
PHYSICAL SCIENCES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The rock is heavier than the water
|
|
|
The rock is less dense than the water
|
|
|
The rock is more dense than the water
|
|
|
The rock is lighter than the water
|
Detailed explanation-1: -It is less dense than water. Simply put, gravity pulls harder on a volume of water than it does on that same volume of air. The water pushes the air out of the way (we commonly call this the buoyant force).
Detailed explanation-2: -Density is a measure of how heavy something is compared to its size. If an object is more dense than water it will sink when placed in water, and if it is less dense than water it will float.
Detailed explanation-3: -Its because the rock has a greater density. “Density” just means how much stuff there is packed into the object. If we could magically inflate the rock, so it got bigger in size without adding any more stuff to it, its density would go down. Eventually it would be less dense than water and could float.
Detailed explanation-4: -If the object is denser than water it is more massive than the water that it displaces. This means that the object experiences greater gravitational force than the water and so sinks.
Detailed explanation-5: -Less dense than water, pumice is a stone that reliably floats in water.