What is the relative density of
seawater.
granite rock.
basaltic rock.
mantle
oh and @SraJMcGin, if you give me another link to the results of something you googled AGAIN, i may just loose my head. it doesn't help!
Seawater is just slightly over the fresh water density baseline of 1 dues to salt and trace minerals in it. Since all your other rocks sink in salt water, you know they are denser (Archimedes)
The mantle is composed of various materials and gets denser with depth, relative density goes from about 3.3 to 5.7
Good old Archimedes means the other rocks are less dense, since they float above the mantle. Here is a table:
Andesite 2.5 - 2.8
Basalt 2.8 - 3.0
Coal 1.1 - 1.4
Diabase 2.6 - 3.0
Diorite 2.8 - 3.0
Dolomite 2.8 - 2.9
Gabbro 2.7 - 3.3
Gneiss 2.6 - 2.9
Granite 2.6 - 2.7
Gypsum 2.3 - 2.8
Limestone 2.3 - 2.7
Marble 2.4 - 2.7
Mica schist 2.5 - 2.9
Peridotite 3.1 - 3.4
Quartzite 2.6 - 2.8
Rhyolite 2.4 - 2.6
Rock salt 2.5 - 2.6
Sandstone 2.2 - 2.8
Shale 2.4 - 2.8
Slate 2.7 - 2.8
mantle
To determine the relative density of a substance, we need to compare its density to the density of another known substance. In this case, we will compare the densities of seawater, granite rock, basaltic rock, and the mantle.
1. Seawater:
The density of seawater can vary slightly depending on factors such as temperature, salinity, and pressure. On average, seawater has a density of about 1,025 kilograms per cubic meter (kg/m³).
2. Granite rock:
To find the density of granite rock, we need to measure its mass and volume. One way to do this is by using a balance or a scale to measure the mass of a granite rock sample, and then submerging the sample in water and measuring the volume of water displaced. Dividing the mass of the sample by the volume of water displaced will give us the density. The density of granite rock typically ranges from 2,650 to 2,800 kg/m³.
3. Basaltic rock:
Similarly, the density of basaltic rock can also be determined by measuring its mass and volume. Basaltic rock typically has a density ranging from 2,700 to 3,300 kg/m³, depending on its composition and other factors.
4. Mantle:
The mantle is a layer beneath the Earth's crust, and its composition can vary. However, the most common type of rock in the mantle is called peridotite. The density of peridotite ranges from 3,200 to 3,500 kg/m³.
In summary, the relative density of each substance would be determined by comparing it to the density of another substance. Seawater has a density of about 1,025 kg/m³, granite rock has a density of around 2,650 to 2,800 kg/m³, basaltic rock has a density of about 2,700 to 3,300 kg/m³, and the mantle typically consists primarily of peridotite with a density of 3,200 to 3,500 kg/m³.