31. What is the name of the group of stars that appears to form a pattern or shape in the sky?
a) Constellation
b) Galaxy
c) Nebula
d) Supernova
32. Which of the following is not a type of star?
a) Red giant
b) White dwarf
c) Brown dwarf
d) Blue supergiant
33. What is the name of the process by which a star fuses helium into heavier elements like carbon and oxygen?
a) Nuclear fission
b) Nuclear fusion
c) Nuclear decay
d) Nuclear fusion and fission
34. Which type of galaxy has no discernible shape or structure?
a) Elliptical galaxy
b) Spiral galaxy
c) Irregular galaxy
d) Dwarf galaxy
35. What is the name of the large, diffuse cloud of gas and dust from which stars and planets form?
a) Supernova remnant
b) Planetary nebula
c) H II region
d) Interstellar medium