Question

name
directions:

1. use the spectra reference sheets (pink) to identify the elements present in each galaxys spectra.
2. identify the heaviest element.
3. draw a neutral atom of only the heaviest element.
4. for the last 2 galaxies, estimate age using the age and elements of other galaxies

*use the the phet atom builder to help! google \phet atom builder\ or scan the qr code.
galaxy ngc 32458, distance: 10 billion lightyears
wavelength: 400 nm energy: 3 ev uv
500 nm 2.5 ev blue
600 nm 2 ev green
700 nm 1.7 ev red
800 nm 1.5 ev infrared
age: 2 billion years

1. elements present: helium, hydrogen
2. circle the heaviest element you listed in number 1
3. draw a neutral atom of the heaviest element below:

p
n
galaxy ngc 11510, distance: 5 billion lightyears
wavelength: 400 nm energy: 3 ev uv
500 nm 2.5 ev blue
600 nm 2 ev green
700 nm 1.7 ev red
800 nm 1.5 ev infrared
age: 7 billion years

1. elements present:
2. circle the heaviest element you listed in number 1
3. draw a neutral atom of the heaviest element below:

p
n

Explanation:

Step1: Identify elements in Galaxy NGC 11510

Without the pink spectra reference sheets, we assume we need to use general knowledge of spectra - elements have unique spectral lines. But since no other information is given for this galaxy's spectra, we can't accurately list elements. However, for the sake of the problem - solving process, if we had the reference sheets, we would match the spectral lines to known element - spectra.

Step2: Identify the heaviest element

Since we can't list elements accurately for Galaxy NGC 11510 in Step 1, we can't identify the heaviest element. But in general, to identify the heaviest element among a list, we would look at the atomic number of each element in the list. The element with the highest atomic number is the heaviest.

Step3: Draw a neutral atom of the heaviest element

Since we haven't identified the heaviest element for Galaxy NGC 11510, we can't draw the neutral atom. For a neutral atom, the number of protons (P) is equal to the number of electrons, and the number of neutrons (N) can be found from the mass - number and atomic number relationship (mass - number=protons + neutrons).

Step4: Estimate the age of the last 2 galaxies

We are given the age of Galaxy NGC 32458 as 2 billion years and Galaxy NGC 11510 as 7 billion years. But to estimate the age of the last 2 galaxies using other galaxies' age and elements, we would need more data on other galaxies' ages and elemental compositions. A common method in astronomy is to use the abundance of heavy - elements (formed in stars through nucleosynthesis) as an indicator of a galaxy's age. Older galaxies tend to have a higher proportion of heavier elements.

Answer:

1. Elements present in Galaxy NGC 11510: Cannot be determined without spectra reference sheets.
2. Heaviest element in Galaxy NGC 11510: Cannot be determined.
3. Drawing of neutral atom of heaviest element in Galaxy NGC 11510: Cannot be done as heaviest element is undetermined.
4. Estimation of age of last 2 galaxies: Insufficient data to make a proper estimate.