Physical Science S2 Final

Looks like a star, but core is not hot enough for fusion to take place. Surrounded by dust, so they are hard to observe. (Baby Star)

• giant star

• nebula

• protostar

• black hole

After the main sequence, a low mass star becomes a ________.

• supergiant

• protostar

• black dwarf

• red giant

Match the following stages with the corresponding star types after the main sequence.

• Late stage of a low mass star

• supergiant

• Early stage star

• protostar

• High mass star

• black dwarf

• End stage of a low mass star

• red giant

The final stage of a low mass star is a ________.

• black dwarf

• nebula

• neutron star

• black hole

After a supergiant, a high mass star explodes and forms a ________.

• planetary nebula

• red giant

• supernova

• black hole

A high mass star can end as this stage, which is so dense that not even light can escape!

• black hole

• white dwarf

• black dwarf

• supernova

What stage fills in the blank. Nebula --> Main sequence --> red giant --> ________ --> white dwarf --> black dwarf

When a nebula heats up, a "baby" star forms in the middle. It is called a

• Protostar

• Supergiant

• Supernova

• White dwarf

Match the following forces with their effects in a nebula.

• Force that causes dust particles to stick together

• Gravity

• Process that powers the sun

• Hydrogen

• Most abundant element in the universe

• Nuclear fission

• Element found in the core of stars

• Iron

What is the biggest difference between a protostar and a main sequence star?

• Protostars are hotter than main sequence stars

• Protostars do not engage in nuclear fusion

• Protostars are more massive than main sequence stars

• Stars spend far longer in the protostar phase than their main sequence