How do impact craters reveal a surface’s geological age??

1 answer:

7 0

<span>Scientists record the size and number of impact craters and how eroded they are to determine the ages and histories of different planetary surfaces.Older surfaces have been exposed to impacting bodies (meteoroids, asteroids, and comets) for a longer period of time than younger surfaces. Therefore, older surfaces have more impact craters. </span>

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Which of the following is a type of rock formation created by tectonic uplift and subsequent weathering? stack mesa glacial horn

balandron [24]

Answer:

glaciers

Explanation:

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Big Bang nucleosynthesis yielded primarily a. light elements with atomic numbers less than 5. b. all 92 naturally occurring elem

sveticcg [70]

Answer:

The correct answer out of the four given options is

option a. light elements with atomic numbers less than 5

Explanation:

Big Bang nucleosynthesis, abbreviated as BBN, also known as primordial nucleosynthesis took place after the Big Bang for about 10 s to 20 minutes and resulted in the yield of isotopes of helium-4 ( $^{4}He$ ), helium-3 ( $^{3}He$ ) which accounts for most of the world's helium, other isotopes of hydrogen in small amounts like deuterium (D or $^{2}H$ ) and lithium isotope, lithium-7( $^{7}Li$ ) in small amount.

Apart from these stable nuclei, it also yielded two radio-active isotopes: tritium( $^{3}H$ ) and beryllium-7( $^{7}Be$ ) which due to their unstability later decayed into ( $^{7}Li$ ) and ( $^{3}He$ ).