Lifecycle of a Star Vocab & Concept Review

Front

Method used by astronomers to calculate distance to nearby stars using apparent shift relative to distant stars.

Back

Parallax

Front

90% of stars fuse hydrogen to form helium in their cores, called _______________

Back

Main Sequence Stars

Front

A remanent of a massive star after a supernova is a _________ star.

Back

Neutron

Front

Stars differ in all of the following except:

Back

composition

Front

Particles that do not absorb, reflect, or emit light, yet have mass and density, and are expanding.

Back

Dark Matter

Front

Mysterious force causing the universe's expansion to accelerate:

Back

Dark Energy

Front

A _______________ resembles a star but lacks sufficient core heat for fusion. Luminosity arises from the heating of contracting elements.

Back

Protostar

Front

A black dwarf star is theoretical because our galaxy isn't old enough; white dwarfs take trillions of years to burn.

Back

Our galaxy is not old enough because white dwarfs would take trillions of years to burn.

Front

For a planetary object to be a sun, ________ must occur in the core.

Back

Nuclear Fusion

Front

All in the universe is ___________

Back

all of the above