Answer:
The specific gravity of minerals will vary because of the presence of impurities in the minerals structure.
Explanation:
The specific gravity or relative density of a substance is a measure of the ratio of the density of a substance to that of the density of a reference substance, in this case, water is the reference substance.
Specific gravity measures how much heavier as substance is relative to water. Therefore, the specific gravity of a mineral is a measure of how much heavier it compared to the weight to an equal amount of water. The specific gravity of water is 1.0. If a mineral has a specific gravity of 4.5, it means that it is 4.5 times heavier than water. Different minerals have different specific gravities. Most minerals with metallic luster have high specific gravities and are known as heavy minerals. Some have average weights while some minerals are light minerals.
The specific gravity of minerals will vary because of the presence of impurities in the minerals structure. If a light mineral is present as an impurity in a heavy mineral, the specific gravity of that mineral will be less than the pure mineral and vice versa.
Answer:
no. D because he whole poem is related to Africa .
hope u have a great day.
There are many ways to measure distance between Perth and Ireland.
First of all, you should know what kind of distance you want to measure: absolute or relative? this means wither it is in a straight line (which might not be suitable for actually doing it in terms of traveling), or relative, and you would be considering possible routes (boat, plane..).
Secondly, you must choose the point in Ireland.
You can use some online tools that help you with measuring distances. An example is:
https://www.freemaptools.com/how-far-is-it-between-Belfast_Northern-Ireland-and-Perth_Australia.htm
You can then change the cities.
Hope this helps.
Answer: physical geology
Physical geology is the division of geology which studies earth's materials such as rocks, minerals, and soils and how they have formed in the surface and interior of the earth through time. It also studies the dynamic forces that caused that cause the formation.
The term known as <u>sea floor spreading</u> causes Earth's tectonic plates to shift.
