Chapter 8: Space Physics

________ initially form from a cloud of dust and gas called a nebula.

The ________ pulls the dust and gas together to form a protostar.

When the temperature gets high enough, hydrogen nuclei undergo ________ to form helium nuclei.

________ provides the force that create orbits.

________ is thought to be responsible for the accelerated expansion of the universe.

________ are satellites that humans have built.

________ (up to iron) are created in the core of the star.

The ________ is all the stuff that orbits our Sun.

The exploding supernova throws the outer layers of dust and gas into space, leaving a very ________ called a neutron star.

If the star is massive enough, it will become a black hole- a(n) ________ point on space that not even light can escape from.

The planets move around the Sun in almost ________ (the same goes for the moon orbiting the earth)

________ and their life cycles produce and distribute all naturally occurring elements.

Force of gravity pulls the dust and gas together to form a prostar

Enters long stable period where the outward pressure and force gravity balance

Big stars glow more brightly as they undergo more fusion and expand and contract several times

If star is massive enough, it turns into a black hole

Mercury, Venus, Saturn, Neptune, Earth, Uranus, Jupiter,

like Pluto, dont meet all rules for being a planet

orbit planets, natural satellites

man-made, that generally orbit earth

stars initially form from a cloud of dust and gass

Thought that the universe is expanding

The universe started with a bang of a tiny space of very dense matter