Question 3 (1 point)

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what is the most energetic portion of the electromagnetic spectrum?

question 3 options:

a)

gamma rays

b)

infrared rays

c)

x-ray

d)

ultra violet ray

a) Gamma Rays

Explanation:

Electromagnetic radiation is transmitted in waves or particles at different wavelengths and frequencies, this range of wavelengths is known as electromagnetic spectrum. This spectrum is divided into seven regions with characteristic energy levels, wavelengths, and frequencies associated with its photons.These regions are (from lower to higher energy) radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays and gamma-rays, following this order Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies. You can see this in comparison with the rest of the spectrum in the image I added.

I hope you find this interesting and useful! Good luck!

Super position

Faunal Succession

Crosscutting Relationships

Inclusions

Explanation:

Superposition: The most basic concept used in relative dating is the law of superposition. Simply stated, each bed in a sequence of sedimentary rocks (or layered volcanic rocks) is younger than the bed below it and older than the bed above it. This law follows two basic assumptions: (1) the beds were originally deposited near horizontal, and (2) the beds were not overturned after their deposition.

Faunal Succession: Similar to the law of superposition is the law of faunal succession, which states that groups of fossil animals and plants occur throughout the geologic record in a distinct and identifiable order. Following this law, sedimentary rocks can be “dated” by their characteristic fossil content. Particularly useful are index fossils, geographically widespread fossils that evolved rapidly through time.

Crosscutting Relationships: Relative ages of rocks and events may also be determined using the law of crosscutting relationships, which states that geologic features such as igneous intrusions or faults are younger than the units they cut across.

Inclusions: Inclusions, which are fragments of older rock within a younger igneous rock or coarse-grained sedimentary rock, also facilitate relative dating. Inclusions are useful at contacts with igneous rock bodies where magma moving upward through the crust has dislodged and engulfed pieces of the older surrounding rock.