Assessment 1 - Physical Science

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

• nuclear fission  

• decomposition

• 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     

• hydrogen and carbon

• helium and carbon    

• hydrogen and helium

Which of the following statements is FALSE?

• The core of red giant star is made up of

  carbon

• The average star has shorter life span

• The more massive the star is the faster it

  burns its fuel

• No elements heavier than Iron can be

  produced in a massive star

Which is the first stage of a star’s life cycle?

• black hole

• nebula

• protostar

• white dwarf

In main sequence star, Hydrogen atoms fuse to form Helium. Helium is then converted into ________ at its core.

• carbon

• neon

• iron

• silicon

This element is produced through Big Bang nucleosynthesis and is considered as the second most abundant element in the universe.

• carbon

• helium

• hydrogen

• oxygen

What object is formed from gas and dust particles which are pulled together by gravity wherein no nuclear fusion has happened yet?

• nebula

• protostar

• main sequence star

• red supergiant star