88thth Grade Science Grade Science Final ReviewFinal Review

When is a star born?When is a star born?

a.a. When nuclear fusion beginsWhen nuclear fusion begins

b.b. When papastar is brightestWhen papastar is brightest

c.c. When a meteor reaches the When a meteor reaches the Earth’s atmosphereEarth’s atmosphere

What type of stars are formed What type of stars are formed from contracting gas and dust?from contracting gas and dust?

a.a. ProtostarProtostar

b.b. NebulaNebula

c.c. Red StarRed Star

What kind of galaxy is the Milky What kind of galaxy is the Milky Way?Way?

a.a. IrregularIrregular

b.b. spiralspiral

c.c. EllipticalElliptical

The term used to described the The term used to described the beginning of the universe isbeginning of the universe is

a. a.

What is the What is the color of the color of the hottest star?hottest star?

a.a. RedRed

b.b. Blue-whiteBlue-white

c.c. yellowyellow

A star’s life cycle depends on itsA star’s life cycle depends on its

a.a. MagnitudeMagnitude

b.b. MassMass

c.c. inertiainertia

Identify these four galaxiesIdentify these four galaxies

Spiral Irregular elliptical spiral

Identify the nebula in the diagram Identify the nebula in the diagram above.above.

Identify which stage our sun is Identify which stage our sun is currently incurrently in

What type of star would be located in What type of star would be located in area A of the HR Diagram?area A of the HR Diagram?

a.a. Hot and brightHot and bright c. cool and dimc. cool and dim

b.b. Hot and dimHot and dim

What type of star would be located in What type of star would be located in area B of the HR Diagram?area B of the HR Diagram?

a.a. Hot and brightHot and bright c. cool and c. cool and brightbright

b.b. Hot and dimHot and dim

What type of star would be located What type of star would be located in area C of the HR Diagram?in area C of the HR Diagram?

a.a. White dwarfWhite dwarf c. red giantc. red giant

b.b. Super giantSuper giant

Where are the oldest stars Where are the oldest stars located?located?

a.a. Spiral galaxySpiral galaxy

b.b. Elliptical galaxyElliptical galaxy

c.c. Irregular galaxyIrregular galaxy

Identify these Identify these galaxiesgalaxies

Irregular

Elliptical

Spiral

Light that was emitted 6 billion Light that was emitted 6 billion years ago is equivalent to years ago is equivalent to

a.a. 6 billion miles6 billion miles

b.b. 6 billion light-years6 billion light-years

c.c. 6 billion years6 billion years

A star with that has a greater A star with that has a greater mass than the sun is said to…mass than the sun is said to…

a.a. To redder than the sunTo redder than the sun

b.b. Live longer than the sunLive longer than the sun

c.c. Have a shorter life span than the Have a shorter life span than the sunsun

What is the difference between What is the difference between an elliptical galaxy and a spiral an elliptical galaxy and a spiral galaxy?galaxy?

a.a. Elliptical has little gas and dustElliptical has little gas and dust

b.b. Elliptical has lots of gas and dustElliptical has lots of gas and dust

c.c. Spiral has no gas or dustSpiral has no gas or dust

According to the HR Diagram, According to the HR Diagram, which category do most stars which category do most stars fall under?fall under?

a.a. SupergiantsSupergiants

b.b. Main sequenceMain sequence

c.c. White dwarfsWhite dwarfs

After observing the diagram, one can conclude that After observing the diagram, one can conclude that

a.a. The smaller the beginning mass of a star, the faster it The smaller the beginning mass of a star, the faster it becomes a white dwarfbecomes a white dwarf

b.b. The larger beginning mass of a star, the faster it The larger beginning mass of a star, the faster it becomes a white dwarfbecomes a white dwarf

c.c. No relationshipNo relationship

What is the correct order of the What is the correct order of the life cycle of a star?life cycle of a star?

a.a. Red giant, black dwarf, white Red giant, black dwarf, white dwarfdwarf

b.b. Supergiant, supernova, black Supergiant, supernova, black holehole

c.c. Main sequence, supergiant, white Main sequence, supergiant, white dwarfdwarf

What is the correct order of What is the correct order of structures given?structures given?

a.a. universe, galaxy, solar system, universe, galaxy, solar system, starstar

b.b. Universe, star, galaxy, solar Universe, star, galaxy, solar systemsystem

c.c. Star, galaxy, solar system, Star, galaxy, solar system, universeuniverse

What type of star is similar to What type of star is similar to our sun?our sun?

a.a. White dwarfWhite dwarf

b.b. Main sequenceMain sequence

c.c. supergiantsupergiant

When leftovers of a supernova When leftovers of a supernova are so massive they collapse to are so massive they collapse to form a dense object whose form a dense object whose gravity is so strong that it cannot gravity is so strong that it cannot escape it. This is referred to as escape it. This is referred to as thethe

a.a. Black holeBlack holeb.b. PulsarPulsarc.c. quasarquasar

How are stars classified?How are stars classified?

a.a. size, brightness, temperaturesize, brightness, temperature

b.b. Color, brightness, sizeColor, brightness, size

c.c. Distance, size, brightnessDistance, size, brightness

A star’s true brightness depends A star’s true brightness depends on itson its

a.a. Size and temperatureSize and temperature

b.b. Color and temperatureColor and temperature

c.c. Distance and temperatureDistance and temperature

What happens when a white What happens when a white dwarf stops glowing?dwarf stops glowing?

a.a. It becomes a black holeIt becomes a black hole

b.b. Supernova occursSupernova occurs

c.c. It becomes a black dwarfIt becomes a black dwarf

All stars begins their lives as All stars begins their lives as parts of a parts of a

a.a. ProtostarProtostar

b.b. PulsarPulsar

c.c. nebulanebula

Evidence shows that our galaxy Evidence shows that our galaxy is moving away from one is moving away from one another. This evidence supports another. This evidence supports thethe

a.a. Big bang theoryBig bang theory

b.b. Geocentric theoryGeocentric theory

c.c. Heliocentric theoryHeliocentric theory

According to According to this picture, this picture, which star is which star is the dimmest the dimmest and coolest?and coolest?

a.a. Barnard’s Barnard’s starstar

b.b. RigelRigel

c.c. Procyon BProcyon B

Which of the Which of the following following statement is statement is not true about not true about the Rigel?the Rigel?

a.a. It is dimIt is dimb.b. It is brightIt is brightc.c. Is is blueIs is blue

According to this diagram how According to this diagram how does a neutron star form?does a neutron star form?

a.a. White dwarf explodesWhite dwarf explodes

b.b. Supernova explodesSupernova explodes

c.c. Red giant collapsesRed giant collapses

Our sun is a Our sun is a yellow star. yellow star. What What temperature temperature range does it range does it burn?burn?

a.a. 6,000-75006,000-7500

b.b. 5000-60005000-6000

c.c. 3500-50003500-5000

Which star has Which star has the greatest the greatest absolute absolute magnitude?magnitude?

a.a. Zeta EridaniZeta Eridani

b.b. MizarMizar

c.c. AntaresAntares

According to this According to this diagram, main diagram, main sequence stars sequence stars areare

a.a. Increase Increase brightness as brightness as temp. increasetemp. increase

b.b. Decrease Decrease brightness as brightness as temp. increasetemp. increase

c.c. Mostly hot and Mostly hot and dimdim

Absolute magnitudeAbsolute magnitude is the is the

a.a. Actual brightness of a starActual brightness of a star

b.b. Temperature of a starTemperature of a star

c.c. The mass of the starThe mass of the star

The distance light travels in a year The distance light travels in a year is called ais called a

a.a. SystemSystem

b.b. FrequencyFrequency

c.c. Light-yearLight-year

A star spends most of its life as A star spends most of its life as a a

a.a. Main sequence starMain sequence star

b.b. Blue starBlue star

c.c. White dwarfWhite dwarf

When a supernova occurs, the When a supernova occurs, the ___ is least like a result.___ is least like a result.

a.a. GalaxyGalaxy

b.b. Neutron starNeutron star

c.c. Black holeBlack hole

Astronomers use a spectrograph Astronomers use a spectrograph to find the to find the

A. location of a star A. location of a star B. temperature of a star B. temperature of a star C. diameter of a star C. diameter of a star