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user100
25 days ago
7

Select all the answers that apply. Types of evidence that astronomers use to estimate the age of the universe and stars include

_____. radioactive dating of rocks fossil evidence movement of galaxies molecular clocks chemical composition of the Sun
Geological evidence of the age of the earth includes _____. radiometric dating of rocks fossil evidence comparative anatomy molecular clocks gradual processes of rock formation
Geography
2 answers:
Darina [297]25 days ago
8 0
Astronomers estimate the ages of the universe and stars using evidence such as <span>the movement of galaxies.

</span><span>Geological evidence regarding the Earth's age incorporates fossil evidence.</span>
Nostrana [330]25 days ago
4 0

The applicable answers include;

  1. Movement of galaxies
  2. The Sun's chemical makeup.

The speed of light and the duration it takes to travel between various points in the universe allows scientists to estimate the ages of distant stars and galaxies. Due to the expansive scale of the universe, it takes years for light to journey from one galaxy to another. Understanding the light's speed and the time taken for it to travel from a remote celestial object, alongside geometric calculations and brightness assessments, enables us to approximate the celestial body's age. A star's age can also be ascertained through its elemental composition. Young stars predominantly consist of lighter elements like helium, while older stars contain a greater proportion of heavier elements such as iron, resulting from the fusion of lighter elements into heavier ones at the core of the sun.




The applicable answers include;

  1. Radiometric dating of rocks
  2. Fossil evidence
  3. Gradual geological processes

Radiometric dating refers to employing the half-life of naturally occurring decaying elements like carbon-14 to determine the age of fossils or rocks. The slow creation of rocks, including the lithification of sedimentary rock or the transformation of rocks, is likewise used to estimate the Earth's age by examining the developmental stage of the rocks and extrapolating their age through calculations.


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23 days ago
After years of maintaining a steady population of 32,000, the population of a town begins to grow exponentially. After 1 year an
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Answer:

y = 32,000 + 2560(x)

Explanation:

After maintaining a stable population of 32,000 for several years, an exponential growth of 8% from 32,000 occurs in the next year, raising the population to 34560.

To calculate this,

8% of 32000 = 8/100 ×  32000 = 2560

Now, adding this growth to the original population results in:

2560 + 32000 = 34, 560

The figure of 34560 represents the population after 1 year.

To predict the town's population over x years, expressed with y as the population, the following formula can be applied:

y = 32,000 + 2560(x)

Testing the equation with values of x = 4 years and 3 years yields:

y = 32,000 + 2560(4) = 32,000 + 10240 = 42240 people will reside in the town in four years

y = 32,000 + 2560(3) = 32,000 + 7680 = 39680 people will reside in the town in three years.

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1 month ago
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