Galaxy Review.

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Presentation transcript:

Galaxy Review

Astronomers estimate that the universe contains 100 galaxies 100 million galaxies 100 billion galaxies 100 trillion galaxies

100 billion galaxies

Clusters of galaxies form larger groups called Supernovas Superclusters Constellations Supergiants

Superclusters

Quasars are thought to be the centers of Distant nebulas Distant constellations Distant galaxies Distant clusters

Distant galaxies

Quasars were named for their Absorption of radiation Generation of radiation Resemblance to galaxies Resemblance to stars

Resemblance to stars

Astronomers group galaxies based on their Shape Size Colors ages

shape

Quasars are among the strongest sources of ____________ in the universe. Planets Sound waves Radio waves microwaves

Radio waves

Our galaxy is classified as a Spiral Elliptical Irregular peculiar

spiral

The universe is made up of mostly Dark matter Dark energy Stars Empty space

Empty space

The number of universes known to exist is One One hundred One million One billion

one

______________ block the view of the center of the Milky Way. Stars and moons Blackholes Gas and dust Planets and stars

Gas and dust

The name of the galaxy cluster that the Milky Way belongs to is the Virgo Cluster Local Group Inner Group Virgo Super Cluster

Local Group

Our solar system is located in the _____ Arm the Milky Way Galaxy. Centarus Perseus Sagittarius Orion

Orion

Which answer best describes the disk of a galaxy? Mostly older stars, not much gas and dust. Mostly older stars, lots of gas and dust. Mostly younger stars, not much gas and dust. Mostly younger stars, lots of gas and dust.

Mostly younger stars, lots of gas and dust.

Which answer best describes the bulge of a galaxy? Made up of old stars in galactic clusters. Made up of old stars in globular clusters. Made up of young stars in galactic clusters. Made up of young stars in globular clusters.

Made up of old stars in globular clusters.

spiral

elliptical

irregular

spiral

spiral

irregular

elliptical

irregular

elliptical

spiral

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