HS-ESS1-1
n Questions
the introductory reading and the data provided, answer each of the reflection questions in complete
What are the two most abundant elements in the solar system?
The abundance of which element is the highest after helium?
What percentage of the solar system's mass is composed of hydrogen and helium combined?
Explain why nuclear fusion is the primary source of energy in stars like our Sun.
Describe the process of the proton-proton chain that occurs in the Sun's core during nuclear fusion.
What is the final product of the proton-proton chain in the Sun?
How does nuclear fusion in the Sun lead to the creation of heavier elements like carbon and
ygen?
Why is iron less abundant compared to lighter elements like hydrogen and helium in the solar
stem?