1.   From such melts the lower density silicates separated upwards to form a crust.

2.   The concept had greater effect upon the building of suburbs, which became leafier and of lower building density than before.

3.   The most obvious differences are the lower density and thermal conductivity of plastics compared with glass.

4.   Large-scale maps can incorporate data obtained by dense sampling of small areas, whereas small-scale maps of offshore areas reflect the much lower sampling density possible is such areas.

5.   Continental lithosphere stands higher than oceanic lithosphere because continental crust is both of greater thickness and lower density than oceanic crust.

6.   When newly formed along mid-oceanic ridges it is hot and thin and it probably has a slightly lower density.

7.   By contrast continental lithosphere has a significantly lower mean density than oceanic lithosphere and its buoyancy with respect to the asthenosphere prevents all but limited subduction.

8.   Since part of the lithosphere is replaced by hot mantle of lower density from the asthenosphere, the lithosphere as a whole experiences isostatic uplift.

9.   As suggested by other recent observations, they found that the less luminous galaxies have lower densities of stars but higher densities of dark matter.