Quiz on Stellar Processes

What is the process called where energy is released in stars?

• Nuclear Fission

• Chemical Reaction

• Fusion Reaction

• Combustion

Which diagram is used to classify stars based on their luminosity and temperature?

• Venn Diagram

• Hertzsprung-Russell (HR) Diagram

• Pie Chart

• Bar Graph

What is the term for the apparent shift in position of a star due to Earth's movement?

• Stellar Parallax

• Doppler Effect

• Redshift

• Gravitational Lensing

What is the process called that describes the formation of stars?

• Star Birth

• Star Formation

• Star Evolution

• Star Expansion

What is determined by measuring the size of a star?

• Stellar Mass

• Stellar Temperature

• Stellar Radii

• Stellar Brightness

What is the process called when hydrogen atoms undergo a reaction to form helium in the center of a star?

• Nuclear fission

• Nuclear fusion

• Radioactive decay

• Chemical reaction

What is the equation for the nuclear fusion reaction in stars involving hydrogen?

What is the definition of fusion as mentioned in the document?

• The splitting of a large nucleus into smaller nuclei

• The joining of two small nuclei to produce a larger nucleus

• The decay of a nucleus into smaller particles

• The absorption of energy by a nucleus

What type of pressure prevents a star from collapsing under its gravity during fusion?

• Atmospheric pressure

• Gravitational pressure

• Radiation pressure

• Thermal pressure

What is required for two nuclei to fuse in the process of nuclear fusion?

• High kinetic energy

• Low kinetic energy

• High potential energy

• Low potential energy