2 Astronomers can measure distance by using ____________, which is an object's apparent shift in position when viewed from two different locations.parallax
3 A ____________ is a unit of measurement often used to describe how far away a star is from Earth. light year
4 The layers of the sun from the outside in are: coronachromospherephotosphereconvective zoneradiative zonecore
5 What is a solar flare?A sudden and tremendous eruption in the solar chromosphere.
6 A region of the sun that appears dark because it is colder. What is a sunspot?A region of the sun that appears dark because it is colder.
7 The ____________ consists of ions that stream out from the Sun's corona solar wind
8 What is happening in the sun's core? Nuclear fusion
9 What layer of the sun do we see from earth? Photosphere
10 A ____________________ is a cloud of gas that loops into the corona A ____________________ is a cloud of gas that loops into the corona. They occur where magnetic fields connecting sunspots soar into the outer atmosphere.Prominence
11 Corona and chromosphere Which layer(s) of the Sun can only be seen during a total solar eclipse?Corona and chromosphere
12 A _______________ is a bright, violent eruption that can last for minutes or hours. flare
13 Hertzsprung-Russell Diagram Name this diagramHertzsprung-Russell Diagram
14 What name is given to a new star formed when nuclear fusion takes place in the core of a nebula, causing gas to begin glowingProtostar
15 Red Orange Yellow White Blue Put these star in order from dimmest to brightest: white, orange, red, yellow, blueRed Orange Yellow White Blue
16 Complete this graphic organizer Life Cycle of StarsRed GiantorSupergiantNebulaMain SequenceStarSmall Mass StarComplete thisgraphic organizerHigher Mass StarsPlanetaryNebulaSupernovaOuter layers blow awayMedium Mass StarHigh Mass StarWhite DwarfNeutron StarBlackHole
17 Stars spend the majority of their life as a _________? Main sequence star
22 What do most stars in our galaxy become at the end of their lives after they leave the main sequence?White Dwarfs
23 Blue White Yellow Orange Red Put these main sequence stars in order from hottest to coldest: orange, blue, white, red, yellowBlueWhiteYellowOrangeRed
24 The stages of most stars life in order are: Protostar, Main Sequence, Red Giant
25 What is the most massive star called? Red Supergiant
26 A _______________ is a hot, dense, slowly cooling sphere of carbon. white dwarf
27 Why does a brown dwarf form? Because the protostar isn't big enough to perform nuclear fusion in its core.
28 What does a protostar have to do to become a star? Nuclear fusion in its core.
29 Main Sequence, Red Supergiant, Supernova, Black Hole What are the stages a supermassive star like Betelgeuse goes through in its lifetime, in order?Main Sequence, Red Supergiant, Supernova, Black Hole
30 Main Sequence, Red Supergiant, Supernova, Neutron Star What are the stages a massive star like Rigel goes through in its lifetime, in order?Main Sequence,Red Supergiant,Supernova,Neutron Star
31 What happens when the sun runs out of fuel? The core becomes unstable and collapses under its own weight.
32 How many years ago did the sun form? 4.6 Billion
33 A rotating neutron star. What is a pulsar?A rotating neutron star.
34 an extremely dense, compact star composed primarily of neutrons. A neutron star is:an extremely dense, compact star composed primarily of neutrons.
35 For a neutron star to form, how big must a star be? A star must be 5-10 times larger than the Sun but not as big as Betelgeuse
36 What stage of a stars life is a neutron star. The end of its life.
37 The matter from the star gets blasted into space. What happens to the star material that does not get condensed into the core?The matter from the star gets blasted into space.
38 What happens when fusion stops in a star's core? The outside of the star swells into a red supergiant while the core condenses.
39 What happens if the original star was so big that after the supernova, even the neutrons don't survive?A black hole is formed