Answer:
Reflection
Explanation:
Think of it as reflection in a mirror. I hope that makes it easier to remember.
The heat that remains inside the Earth from its creation and radioactive decay are its main heat sources.
The deep earth receives heat from three main sources: (1) heat left over from the planet's formation and accretion, (2) frictional heating brought on by denser core material sinking to the planet's centre, and (3) heat from radioactive element decay.
The energy produced when unstable atoms decay is known as radioactivity, and it is a substantial contributor to the Earth's heat. The main source are the radioactive isotopes of uranium-235 (235U), uranium-238 (238U), potassium-40 (40K), and thorium-232 (232Th) in the Earth's mantle.
To know more about Earth, click here:
brainly.com/question/12041467
#SPJ4
A magnetic survey can be used to explore for minerals that cannot be seen because the deposit is hidden underground.
<h3>What is Magnetic Survey?</h3>
Magnetic surveying is one of the methods used in archaeological geophysics.
This involves the measurement of and recording of Spartial variations in the earth's magnetic field.
Magnetic survey is also in search for mineral-bearing ore bodies or even oil-bearing sedimentary structures.
Learn more about minerals at brainly.com/question/538256
The correct is - (b) the African plate is spreading apart to form two separate plates.
The African tectonic plate, on of the biggest ones, but it will not be like for a long time in the future as the plate is separating into two parts. The eastern part of the plate is moving towards east, and it is moving away from the mainland Africa. Because of this movement, cracks have been forming all over the eastern side of Africa, thus the numerous faults. Over time, as the distance is increasing, the space in between will fill with ocean water, thus making a natural barrier between them, as well as setting the foundations for the creation of a new sea, or maybe even an ocean.
B the crustal activity.
This is because if you find japan where earthquakes occur frequently, it is surrounded by the black dots
