Quiz about Life Cycle of Stars

Question 1

an enormous cloud of dust and gas occupying the space between stars and acting as a nursery for new stars.

Accepted Answer

nebula

Answer

main sequence star

Answer

mass

Answer

luminosity

Question 2

contracting mass of gas which represents an early stage in the formation of a star, before nucleosynthesis has begun

Accepted Answer

protostar

Answer

supervona

Answer

black hole

Answer

gravity

Question 3

stars that are fusing hydrogen atoms to form helium atoms in their cores.

Accepted Answer

main sequence star

Answer

super redgiant

Answer

red giant

Answer

Nebula

Question 4

very large star of high luminosity and low surface temperature, thought to be in a late stage of evolution when no hydrogen remains in the core to fuel nuclear fusion.

Accepted Answer

red giant

Answer

nuclear fusion

Answer

main sequence star

Answer

core collapse

Question 5

a small very dense star that is typically the size of a planet, formed when a low-mass star has exhausted all its central nuclear fuel and lost its outer layers as a planetary nebula.

Accepted Answer

white dwarf

Answer

black dwarf

Answer

super redgiant

Answer

mass

Question 6

extremely large red giant star with a minimum of 15 solar masses. The best known red supergiant is Betelgeuse, with a luminosity about 10,000 times that of the Sun.

Accepted Answer

super redgiant

Answer

main sequence star

Answer

supernova

Answer

neutron star

Question 7

star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.

Accepted Answer

supernova

Answer

nebula

Answer

luminosity

Answer

red giant

Question 8

a celestial object of very small radius and very high density, composed predominantly of closely packed neutrons, thought to form by the gravitational collapse of the remnant of a massive star after a supernova explosion

Accepted Answer

neutron star

Answer

black hole

Answer

gravity

Answer

nuclear fusion

Question 9

a region of space having a gravitational field so intense that no matter or radiation can escape.

INFORMAL

Accepted Answer

black hole

Answer

low mass star

Answer

high mass star

Answer

luminosity

Question 10

a measure of the amount of matter in an object.

Accepted Answer

mass

Answer

luminosity

Answer

main sequence star

Answer

low mass star

Question 11

the intrinsic brightness of a celestial object

Accepted Answer

luminosity

Answer

mass

Answer

gravity

Answer

stars

Question 12

is the force by which a planet or other body draws objects toward its center

Accepted Answer

gravity

Answer

nebula

Answer

black hole

Answer

neutron star

Question 13

Any of a large group of elements, including iron, gold, copper, lead, and magnesium, that conduct heat and electricity well.

Accepted Answer

heavy elements

Answer

nuclear fusion

Answer

stars

Answer

red giant

Question 14

involves the combining of several small nuclei into one large nucleus with the subsequent release of huge amounts of energy.

Accepted Answer

nuclear fusion

Answer

main sequence star

Answer

supernova

Answer

mass

Question 15

stars with masses less than half the mass of the Sun) are the smallest, coolest and dimmest Main Sequence stars and orange, red or brown in color.

Accepted Answer

low mass star

Answer

high mass star

Answer

mass

Answer

gravity

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