What information is revealed by magnetism on rocks.
A. Mass
B. Minerals.
C. Luster
D. Age
When studying rocks, magnetism can reveal information about their mineral content and sometimes provide clues about their age. Therefore, the answers are:
B. Minerals.
D. Age.
The information revealed by magnetism on rocks is the presence of certain minerals that exhibit magnetic properties. Therefore, the correct answer is B. Minerals.
To determine the presence of magnetic minerals in rocks, you can use a handheld magnet or a magnetometer. Here is how you can do it:
1. Obtain a small handheld magnet or a magnetometer. A magnetometer is a more precise tool specifically designed for measuring the strength and direction of magnetic fields.
2. Bring the magnet or magnetometer close to the rock and observe any magnetic attraction or deflection of the magnetic field.
3. If the rock exhibits magnetic attraction or causes a deflection in the magnetic field, it indicates the presence of magnetic minerals within the rock.
4. Note that not all rocks contain magnetic minerals, so the lack of magnetism does not necessarily imply anything about the rock.
By using this method, geologists and researchers can study the magnetic properties of rocks to identify specific minerals or even gather information about the geological history and processes that have influenced the rocks, such as the alignment of magnetic minerals with the Earth's magnetic field over time.