life cycle of star prezi

The Life Cycle of a Star

Also known as a ____________.
All stars begin their life in a ____________, a cloud of ____________ and ____________ gases and dust.
____________ draws gases and dust together, forming ____________ for new stars.

Formation of ____________.
Protostars form when the mass in a core ____________ under gravitational force.
The core becomes a dense, spinning ball of gas, heating up to about ____________ degrees Celsius.
This temperature is necessary for the fusion of ____________ into ____________.

Protostar evolves into a main sequence star when ____________ begins, causing the star to glow.
Most of a star's life is spent in this ____________ phase where radiation and heat from fusion counteract gravitational ____________.
Sun-like stars (like our Sun) can exist approximately ____________ years in this phase.
This phase is crucial as it produces ____________ and ____________ for planets, drives ____________ and ____________ movements, and supports ____________ in plants.

After billions of years of ____________ fusion, hydrogen supply diminishes.
Gravity collapses the core, which heats up, causing the outer layers to ____________ and ____________.
The star becomes hundreds of times larger and glows ____________ as it begins fusing helium into ____________.

Hydrogen layers from the red giant form a ____________ around the inner core, leading to a ____________ ________.
The core continues fusing helium until all is exhausted, eventually cooling and ____________ as the star dies.

The core ____________ and becomes extremely dense as a ____________ ________, shining with hot white light initially.
Once all energy is depleted, the star stops emitting light and becomes a ____________ ________.

A massive star has over ____________ times the Sun's mass and uses hydrogen ____________ during its main sequence phase.

Similar to red giants but ____________; when hydrogen is depleted, helium begins fusing into ____________ elements (carbon, oxygen, iron).
The outer layers ____________ significantly, reaching supergiant status and generating ____________ temperatures.

Iron atoms in the core absorb ____________ and eventually lead to a ____________ explosion.
Approximately ____________% of the star's mass can be expelled, creating a ____________.
Supernovas can illuminate the sky for several ____________.

If the remaining core is between ____________ to ____________ solar masses, it collapses into a neutron star.
Neutron stars are very small (about ____________ miles across) but superdense and spin rapidly, emitting ____________ waves.
When radio waves are emitted in ____________, it's termed a ____________.

If the core left after a supernova exceeds ____________ solar masses, it collapses into a black hole.
Black holes have intense ____________, attracting all matter and energy; not even ____________ can escape.
While black holes are invisible, they can be detected through ____________ as matter falls in.