WorksheetsPHYSCI
Total questions: 10
Worksheet time: 2mins
Which of the following is NOT an evidence of star formation?
hydrogen
helium
infrared Radiation
rocks
Star’s energy is produced by which process?
combustion
decomposition
nuclear fission
nuclear fusion
If the sun reaches the end of red giant phase, it will evolve into a _______.
black hole
supernova
red super giant
white dwarf
A category which includes the largest stars in the universe.
main sequence star
red giant
red super giant
white dwarf
Which of the following elements are major components of star?
carbon and oxygen
helium and carbon
hydrogen and carbon
hydrogen and helium
Which is the first stage of a star’s life cycle?
black hole
nebula
protostar
white dwarf
This element is produced through Big Bang nucleosynthesis and is considered as the second most abundant element in the universe.
carbon
helium
hydrogen
oxygen
Who stated that we are made of star stuff?
Carl Sagan
Edwin Hubble
Galileo Galilei
Stephen Hawking
Our sun is in what phase of its life cycle?
main sequence star
planetary nebula
red giant
white dwarf
Which of the following involves the fusion of two protons into helium? As the protons fuse, one of them undergoes beta plus decay, converting into a neutron by emitting a positron and an electron neutrino.
proton to proton chain reaction
CNO cycle
Tri-alpha process
Alpha Ladder
