Podcast
Questions and Answers
What nuclear reactions during stellar evolution are responsible for synthesizing elements?
What nuclear reactions during stellar evolution are responsible for synthesizing elements?
- Triple alpha process (correct)
- Fusion reaction process
- Single alpha process
- Beta decay process
What temperature is required for helium fusion by the triple alpha process to convert three He atoms into C?
What temperature is required for helium fusion by the triple alpha process to convert three He atoms into C?
- $100 \times 10^6K$ (correct)
- $50 \times 10^6K$
- $125 \times 10^6K$
- $75 \times 10^6K$
What happens to stars when their fuel is spent and they become unstable?
What happens to stars when their fuel is spent and they become unstable?
- They turn into neutron stars or black holes
- They explode in a supernova (correct)
- They shrink into smaller stars
- They evolve into red giants
How do new stars form from blown away debris of supernova explosions?
How do new stars form from blown away debris of supernova explosions?
What sources aid in the study of wavelength spectra emitted by stellar bodies?
What sources aid in the study of wavelength spectra emitted by stellar bodies?
Which elements are the most abundant in the solar system?
Which elements are the most abundant in the solar system?
Why are elements with even atomic numbers more abundant than their immediate neighbors with odd atomic numbers?
Why are elements with even atomic numbers more abundant than their immediate neighbors with odd atomic numbers?
Why do Tc and Pm not occur naturally in the solar system?
Why do Tc and Pm not occur naturally in the solar system?
Why does Fe have notably higher abundance compared to other elements with similar atomic numbers?
Why does Fe have notably higher abundance compared to other elements with similar atomic numbers?
How are differentiated meteorites distinct from undifferentiated meteorites?
How are differentiated meteorites distinct from undifferentiated meteorites?
Why do elements with atomic numbers greater than 83 (Bi) occur naturally at very low abundance?
Why do elements with atomic numbers greater than 83 (Bi) occur naturally at very low abundance?
What makes most meteorites believed to be derived from collisions of larger bodies in the asteroid belt?
What makes most meteorites believed to be derived from collisions of larger bodies in the asteroid belt?
What is the major method used to discern rock type, especially in the case of volcanic and glassy rocks?
What is the major method used to discern rock type, especially in the case of volcanic and glassy rocks?
Which two elements together make up over 70% of the Earth's crustal composition?
Which two elements together make up over 70% of the Earth's crustal composition?
In the Earth's crust, how many elements constitute more than 99.5% of its composition?
In the Earth's crust, how many elements constitute more than 99.5% of its composition?
At what depth do we typically find the Earth's upper mantle, which is composed of olivine, pyroxene, and plagioclase feldspar?
At what depth do we typically find the Earth's upper mantle, which is composed of olivine, pyroxene, and plagioclase feldspar?
Which region of the Earth's interior is likely to be richer in Iron compared to the upper mantle?
Which region of the Earth's interior is likely to be richer in Iron compared to the upper mantle?
What are the two main components of Earth's core in terms of elemental composition?
What are the two main components of Earth's core in terms of elemental composition?
