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ASTR 1346 EXAM 1 ACTUAL
QUESTIONS 2026 WITH VERIFIED
ANSWERS.
Rainbow is an example of a/an____________ spectrum. -
correct answer-Continuous
About how many planet Earths could fit along the diameter of
Sun? - correct answer-Slightly more than a 100
Which is the correct ranking of the layers of the Sun based on
their temperature, from highest to lowest? - correct answer-
Core, Corona, Photosphere, Chromosphere
The solar particles (free electrons and protons) from the Sun
reach to the Earth in about - correct answer-3-4 days
In which layer of the Sun the spicules occur? - correct answer-
Chromosphere
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What is the structure of a typical large sunspot? - correct
answer-dark center (called umbra) surrounded by a less dark
area (called penumbra)
If you move a star four times as far away from the Earth
compared to where it is now, which of the following will be true?
- correct answer-The star will appear one sixteenth as bright.
What is the classification of our Sun? - correct answer-G2 V
The star Elnath is classified as B7 III, and our neighboring star
Barnard is classified as M5V. Which of these stars is hotter? -
correct answer-Elnath
In an HR diagram, what does the Y-axis represent? - correct
answer-Luminosity
Stars in our solar system are - correct answer-one
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Stars in our galexy - correct answer-Billions
How may galaxies are there in our known universe? - correct
answer-200 Billions
Red has the longest wavelength and violet has the least-- -
correct answer-Red is the least energetic and blue is most
energetic
which is the largest - correct answer-b) the radius of the sun
(bigger distance)
Which part of?The sun is the hardest.
Which part of the sun do you see every day?
Which part of the sun is the densest? - correct answer-1. Core
2.Photosphere
3.Radiation zone
Which of the following is the most massive object?? The sun.
ASTR 1346 EXAM 1 ACTUAL
QUESTIONS 2026 WITH VERIFIED
ANSWERS.
Rainbow is an example of a/an____________ spectrum. -
correct answer-Continuous
About how many planet Earths could fit along the diameter of
Sun? - correct answer-Slightly more than a 100
Which is the correct ranking of the layers of the Sun based on
their temperature, from highest to lowest? - correct answer-
Core, Corona, Photosphere, Chromosphere
The solar particles (free electrons and protons) from the Sun
reach to the Earth in about - correct answer-3-4 days
In which layer of the Sun the spicules occur? - correct answer-
Chromosphere
, Page | 2
What is the structure of a typical large sunspot? - correct
answer-dark center (called umbra) surrounded by a less dark
area (called penumbra)
If you move a star four times as far away from the Earth
compared to where it is now, which of the following will be true?
- correct answer-The star will appear one sixteenth as bright.
What is the classification of our Sun? - correct answer-G2 V
The star Elnath is classified as B7 III, and our neighboring star
Barnard is classified as M5V. Which of these stars is hotter? -
correct answer-Elnath
In an HR diagram, what does the Y-axis represent? - correct
answer-Luminosity
Stars in our solar system are - correct answer-one
, Page | 3
Stars in our galexy - correct answer-Billions
How may galaxies are there in our known universe? - correct
answer-200 Billions
Red has the longest wavelength and violet has the least-- -
correct answer-Red is the least energetic and blue is most
energetic
which is the largest - correct answer-b) the radius of the sun
(bigger distance)
Which part of?The sun is the hardest.
Which part of the sun do you see every day?
Which part of the sun is the densest? - correct answer-1. Core
2.Photosphere
3.Radiation zone
Which of the following is the most massive object?? The sun.
