star formation

The interstellar medium & nebula clouds are important because

• the Big Bang would've never occurred without them.

• black holes would never exist if the clouds were not there.

• they make up the space between the stars.

• they are regions for new star formation.

What causes the interstellar clouds to collapse to form proto-stars & stars?

• centripetal forces that act over large areas between stars

• a contraction & clumping of gas/dust due to gravity

• a contraction & clumping of gas/dust due to frictional force

• a "trigger" mechanism such as two colliding stars

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

When enough mass is accreted by a proto-star then ____ occurs at the core.

• atomic reactions

• nuclear fusion

• massive pressure

• nuclear fission

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What happens when a proto-star begins the hydrogen/fusion energy process in its core?

• mayhem & destruction ensues

• the proto-star becomes (officially) a real star

• no one really knows since it hasn't been observed (yet)

• the proto-star may explode due to the outward pressure

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Stars are swirling balls made up of...

• fire and ash.
• plasma and liquid.
• gas and plasma.
• fire and plasma.

If a star is yellow, we can conclude that...

• it is a massive star.
• it is an average star.
• it will one day become a neutron star.
• it will one day become a black hole.

Stars are 96% - 99% ____ and ___.

• gas, dust

• helium, hydrogen

• hydrogen, helium

• hydrogen, carbon

The giant molecular clouds that form new stars are also called ___.

• pulsars

• white holes

• nebulae

• protostars

Collapse of giant molecular clouds is often triggered by:

• planetary nebulae

• pulsars

• supernova shockwaves

• solar winds

How do stars form?

• through the sun
• when nebula collapses and nuclear fusion occurs
• through supernova
• Magic