Radioactivity is produced when unstable nuclei___
1) bond together
2) break apart *****
3) become cooler
4) expand
I need help please
Yes
If you are taking the Precambrian Time Earth science test:
B
C
B
D
A
C
B
C
To answer this question, let's break it down and analyze each option.
1) Bond together: This option describes a process called nuclear fusion, which occurs when two or more atomic nuclei combine to form a heavier nucleus. Fusion reactions play a significant role in the energy production of stars, like our sun, but they do not produce radioactivity. Therefore, we can eliminate this option.
2) Break apart (Correct Answer): This option describes a process known as nuclear fission, which occurs when a large, unstable nucleus splits into smaller fragments. This process is responsible for the release of a tremendous amount of energy and the production of radioactivity. Therefore, this is the correct answer.
3) Become cooler: This option refers to the decrease in temperature. While temperature can affect the behavior of atomic particles, it does not directly lead to the production of radioactivity. Thus, we can eliminate this option.
4) Expand: This option refers to the increase in size or volume, which is not relevant to the process of radioactivity. Therefore, we can eliminate this option.
In conclusion, unstable nuclei produce radioactivity when they break apart, which is option 2.