Astro 1500 Nov 12, 2024 Trivia - Exam 3 Review (Lects. 15-21)

What happens to a star IMMEDIATELY after running out of H?

• The core contracts

• The star begins to expand

• The star goes super novae

• The star begins fussing helium

Tags

NGSS.HS-ESS1-1

Why are white dwarfs so hot?

• White dwarfs are condensely packed and fuse hydrogen at a faster rate

• White dwarfs are stars that have run out of hydrogen fuel and are burning heavier elements

• White dwarfs produce radiation through electron degeneracy pressure

• White dwarfs are stellar cores, which were the hottest part of the star

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

White dwarfs are not fusing anymore elements, so why don't white dwarfs collapse?

• Electron Degeneracy Pressure

• Blackbody Radiation

• Hydrostatic Equillibrium

• Gravity is much weaker and thus can't collapse a white dwarf

True or False: Merging Neutron Stars ALWAYS form a black hole

• True

• False

Which of the following stars CANNOT go supernovae?

• A singular star with a solar mass of 8 Suns

• A singular star with a solar mass of 7 Suns

• A star in a binary system with a solar mass of 5 Suns

• A singular star with solar mass of 10 Suns

Tags

NGSS.HS-ESS1-3

Which of the following elements cannot be fused in a star?

• Lithium

• Silicon

• Sodium

• Iron

Tags

NGSS.HS-ESS1-3

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Which of the following is NOT a possible way for a black hole to form?

• A neutron star merges with another neutron star

• A singular star with a solar mass of 20 Suns goes supernovae

• A singular star with a solar mass of 25 Suns goes supernovae

• A white dwarf consumes mass from a nearby star

Tags

NGSS.HS-ESS1-3

Which of the following is false about Pulsars?

• Pulsars are used to find stellar distances

• Pulsars produce a beam of light by motion of e- in magnetic field

• Pulsars are rotating neutron stars

• Pulsars typically start rotating a tens of ms

Tags

NGSS.HS-ESS1-3

Which of the following is true about Short GRB's and Long GRB's?

• Short GRB's are produced by hypernovas, while Long GRB's are produced by kilonovas

• Short GRB's fade quicker than Long GRB's

• Short GRB's and Long GRB's always come from black holes

• Short GRB's and Long GRB's are used to find stellar distances

True or false: Pulsars rotate the same speed their whole life.

• True

• False