What do supernova remnant and planetary nebulae have in common? Select the three correct answers.(2 points)
Responses
a They are composed only of hydrogen and helium.
b They are composed of matter from dying stars.
c They emit non-visible radiation.
d They contribute matter to interstellar space.
e They are diffuse.
The correct answers are:
b They are composed of matter from dying stars.
d They contribute matter to interstellar space.
e They are diffuse.
The three correct answers are:
b) They are composed of matter from dying stars.
c) They emit non-visible radiation.
d) They contribute matter to interstellar space.
To determine the correct answers, let's explore the similarities between supernova remnants and planetary nebulae:
a) They are composed only of hydrogen and helium: This statement is incorrect. Both supernova remnants and planetary nebulae are composed of matter from dying stars, which includes elements beyond just hydrogen and helium. Therefore, option a is not a correct answer.
b) They are composed of matter from dying stars: This statement is correct for both supernova remnants and planetary nebulae. When stars reach the end of their life cycles, they go through explosive events that disperse their outer layers into space. These remnants form supernova remnants and nebulae, and both types of objects are composed of matter from dying stars.
c) They emit non-visible radiation: This statement is also correct for both supernova remnants and planetary nebulae. When these objects are formed, they emit various types of radiation, including visible light, infrared, ultraviolet, and even X-rays. So, option c is a correct answer.
d) They contribute matter to interstellar space: This statement is correct for both supernova remnants and planetary nebulae. When these objects are formed, they release the material from the dying star into interstellar space, enriching it with various elements. Therefore, option d is a correct answer.
e) They are diffuse: This statement is incorrect. Supernova remnants are known to be relatively diffuse, but planetary nebulae, on the other hand, are often more concentrated and have a well-defined structure. Therefore, option e is not a correct answer.
Based on the explanations above, the three correct answers are:
- b) They are composed of matter from dying stars.
- c) They emit non-visible radiation.
- d) They contribute matter to interstellar space.