REVIEWER IN PHYSICAL SCIENCE G12

Which of the following is NOT an evidence of star formation?

• hydrogen

• helium

• infrared Radiation

• rocks

Which phase of star will be created after the end of red giant?

• black hole

• red super giant

• supernova

• white dwarf

Which of the following gases 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

Which is 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

When does a star become unstable?

• When it runs out of fuel

• When it contracts and expands

• When its core is converted to Iron

• When the outer shell of star is pulled by the gravity from the center

Which is a huge luminous ball of hot gas such as Hydrogen and Helium.

• comet

• moon

• planet

• star

Which of the following is the sign that a protostar will transform into the next stage?

• When the it starts to spin faster

• When it starts to glow

• When Hydrogen nuclear fusion begins

• When it increases temperature igniting the Hydrogen

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