
Nuclear Fusion & Emission Spectra
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is nuclear fusion?
Back
Nuclear fusion is a process where two light atomic nuclei combine to form a heavier nucleus, releasing energy in the process.
2.
FLASHCARD QUESTION
Front
What conditions are necessary for nuclear fusion to occur?
Back
High temperature and high pressure are necessary for nuclear fusion to occur.
3.
FLASHCARD QUESTION
Front
What element is primarily produced when hydrogen nuclei fuse in the Sun?
Back
Helium is produced when hydrogen nuclei fuse in the Sun.
4.
FLASHCARD QUESTION
Front
What is an emission spectrum?
Back
An emission spectrum is the spectrum of light emitted by a substance when it is heated or energized, showing distinct lines corresponding to specific wavelengths.
5.
FLASHCARD QUESTION
Front
What is an absorption spectrum?
Back
An absorption spectrum is a spectrum that shows the wavelengths of light absorbed by a substance, indicating the specific energies of electrons in atoms.
6.
FLASHCARD QUESTION
Front
How can scientists identify unknown gases using spectra?
Back
Scientists can identify unknown gases by comparing their absorption or emission spectra to known spectra of pure elements.
7.
FLASHCARD QUESTION
Front
What is the core of the Sun?
Back
The core of the Sun is the innermost layer where nuclear fusion occurs, producing energy that powers the Sun.
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