What is the primary process that produces light in stars like the sun?

Nuclear Fusion and Stellar Processes

Interactive Video
•
Physics, Chemistry, Science
•
9th - 12th Grade
•
Hard

Patricia Brown
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chemical reactions
Nuclear fusion
Nuclear fission
Gravitational collapse
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What phenomenon allows nuclear fusion to occur in the sun's core despite the repulsion between hydrogen nuclei?
Thermal expansion
Gravitational forces
Magnetic fields
Quantum tunneling
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the proton-proton chain reaction, what is the end product formed from two protons and two neutrons?
Helium
Deuterium
Carbon
Lithium
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the term for the missing mass that is converted into energy during nuclear fusion?
Mass surplus
Mass deficit
Mass balance
Mass conversion
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of gamma rays in the sun's core?
They reduce mass
They create new elements
They increase pressure
They cool the core
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do nuclear fusion reactions typically stop at iron?
Iron is too heavy to fuse
Iron fusion is endothermic
Iron is too rare
Iron is unstable
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of reaction releases more energy than it consumes?
Adiabatic
Isothermal
Exothermic
Endothermic
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