1. Consider the Earth-moon system, the solar system, the galaxy and the universe
ID: 106552 • Letter: 1
Question
1.
Consider the Earth-moon system, the solar system, the galaxy and the universe. Which is smallest?
the galaxy
2.
Light from the sun takes 43 minutes to reach Jupiter. The sun is almost 430 times farther from Jupiter than is Callisto (one of the moons of Jupiter). How long does light from Callisto take to reach Jupiter?
3.
A particular galaxy is about 2.3 million light-years away. Light travels at 6 trillion miles per year. How many miles distant is the galaxy?
13.8 miles
4.
How long does it take light to cross the diameter of our Milky Way Galaxy? Pick the best answer.
8,000 years
5.
Why is it difficult to detect planets orbiting other stars?
the Earth-moon system the universe the solar systemthe galaxy
2.
Light from the sun takes 43 minutes to reach Jupiter. The sun is almost 430 times farther from Jupiter than is Callisto (one of the moons of Jupiter). How long does light from Callisto take to reach Jupiter?
48 minutes 6 seconds 48 hours 6 minutes 0.6 seconds3.
A particular galaxy is about 2.3 million light-years away. Light travels at 6 trillion miles per year. How many miles distant is the galaxy?
13800,000,000 miles 13800,000,000,000 miles 13800,000,000,000,000,000 miles 13800 miles13.8 miles
4.
How long does it take light to cross the diameter of our Milky Way Galaxy? Pick the best answer.
8 minutes 4 years 1 second 80,000 years8,000 years
5.
Why is it difficult to detect planets orbiting other stars?
because they are so small and so far away because they are so rare because as far as we know, there aren't any Actually, it is not difficult to detect planets orbiting other stars. OExplanation / Answer
1.
Consider the Earth-moon system, the solar system, the galaxy and the universe. Which is smallest?
Answer: the Earth-moon system
Justification:
Because Earth-moon system is smaller than our solar system which contains all the 9 planets and their moons. Our galaxy is milky-way ans is definitely bigger than our solar system as it contains many solar systems like ours. The universe is bigger than the galaxy as it contains many galaxies like our milky way galaxy.
3.
A particular galaxy is about 2.3 million light-years away. Light travels at 6 trillion miles per year. How many miles distant is the galaxy?
Answer: 13800,000,000,000 miles
Justification:
A light year is roughly 6 trillion miles. So, 2.3 x 6 trillion miles is the answer for this question. i.e. 13.8 X 1000000000000 = 13800,000,000,000 miles. (because a trillion contains 12 zeros)
4.
How long does it take light to cross the diameter of our Milky Way Galaxy? Pick the best answer.
Answer: 80,000 years
Explanation:
It would take 80,000 to 100,000 years to cross the Milky Way and reach its opposite end if a light passes it at its own speed.
5.
Why is it difficult to detect planets orbiting other stars?
Answer:
because they are so small and so far away
Explanation:
(Note: As per the Chegg Answering Guidlines, I have to answer 4 sub parts only, and I have followed that guideline here)
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