Astronomy Final Exam Review

Stars are round due to a balance of forces. What is the name of the balance?

• radiation pressure

• nuclear fusion

• gravity

• hydrostatic equilibrium

Why will our sun not become a supernova?

• It is too bright

• It is too small

• It is too large

• It is too old

Which of the following will give the best indication of a star's temperature?

• the distance of the star

• the radius of the star

• the color of the star

• the age of the star

Tags

NGSS.HS-PS4-3

Which of the following is the most abundant element in the Sun?

• Hydrogen

• Helium

• Carbon

• Oxygen

Tags

NGSS.HS-ESS1-3

What kind of star lives a very hot, bright and short life?

• Red giant

• Main sequence

• High mass star

• Low mass star

Which of the following is a possible order of life for a low mass star?

• nebula, protostar, brown dwarf, red giant, white dwarf, black dwarf

• protostar, nebula, main sequence, white dwarf, black dwarf

• nebula, protostar, main sequence, red giant, planetary nebula, white dwarf, black dwarf

• protostar, nebula, main sequence, red giant, brown dwarf, white dwarf

Which of the following earliest stage of a star (where is it "born")?

• Nebula

• Protostar

• Main sequence

• Neutron star

Which definition best explains Hubble's Law?

• As a star moves toward Earth, the lines in it's spectrum undergo a blue shift.

• The most distant galaxies that can be seen from Earth are moving away at more than 90% of the speed of light.

• The redshifts in the spectra of distant galaxies are proportional to their distance.

• As a star or galaxy circles the Earth. the lines appear to get bigger.

Tags

NGSS.HS-ESS1-2

What makes supernovas explode?

• It can happen because a chicken nugget decides it wants some sauce and it falls into a nuclear reactor and creates a supernova.

• It can happen from a Moon stealing mass from a companion star and then stealing so much it explodes into a million pickles.

• It can also happen when two neighboring galaxies collide.

• It can happen when a star comes to the end of its life and has no more nuclear energy and some mass flows to the core until it can’t withstand its own gravitational force and collapses in on itself and blows up

Which two things typically result from a Supernova?

• Black Hole and Nova

• Black Hole and Neutron Star

• Neutron Star and Supernova

• All of the above