Just like dimples in the face, some people are born with back dimples no matter their body fat percentage. Remember! Despite of all the sweating diet control and hard work, if you don't have it in your genes, the probability of you NOT getting back dimples are high as they are genetic makeup. This disappointing but it is a fact.
When the volume is increased while the mass remains, the density increases. One way to increase volume is by reducing the temperature of objects especially gases. This is how â¦ air conditioning and fridges work, cooling the air which will move down as denser objects sink.
1 Note that we know that density must increase with depth in the Earth because the density of crustal rocks are about 2,700 kg/m 3 and the average density of the Earth is about 5,200 kg/m 3. 2  Also note from the velocity equations that if density increases, wave velocity decreases.