Formation and Motion of Galaxies

Which of the following correctly lists bodies in space from the smallest to the largest?

• Earth, Sun, Solar System, Milky Way Galaxy, Universe

• Earth, Sun, Milky Way Galaxy, Solar System, Universe

• Sun, Earth, Solar System, Milky Way Galaxy, Universe

• Universe, Milky Way Galaxy, Sun, Solar System, Earth

Tags

NGSS.MS-ESS1-3

Our galaxy is the Milky Way. From the side, the Milky Way would like a flat disc, with a bulge in the middle. From above, it has “arms” of stars that curve around the central bulge of stars. What type of galaxy is the Milky Way?

• a planetary nebula

• a spiral galaxy

• an irregular galaxy

• an elliptical galaxy

What can be concluded from Hubble’s Law about galaxies that have less of a redshift than other galaxies?

• They are, in general, moving faster away from Earth than galaxies with a larger redshift.

• They are, in general, moving more slowly away from Earth than galaxies with a larger redshift.

• They have fewer stars in their galaxies than the Milky Way does.

• They are farther from Earth than galaxies with a larger redshift.

Which lists the celestial bodies in order of increasing diameter?

• Jupiter, Earth’s moon, red giant star, sun, Milky Way, universe

• Jupiter, Earth’s moon, sun, red giant star, Milky Way, universe

• Earth’s moon, Jupiter, red giant star, sun, Milky Way, universe

• Earth’s moon, Jupiter, sun, red giant star, Milky Way, universe

Tags

NGSS.MS-ESS1-3

Galaxies are classified and named according to their

• shape

• wavelength

• distance from Earth

• cosmic background radiation

Hubble’s Law states that galaxies that are further from Earth

• are usually orbited by black holes

• are, in general, moving faster away from Earth than closer galaxies.

• have fewer stars in their galaxies than the Milky Way does.

• contain more planets than the Milky Way.

An astronomer views the spectra of two different galaxies. Galaxy X demonstrates a larger redshift than Galaxy Y. What can the astronomer conclude from this observation?

• Galaxy Y is moving faster than Galaxy X.

• Galaxy X is farther from Earth than Galaxy Y.

• Galaxy Y is moving toward Earth while Galaxy X is moving away from Earth.

• Galaxy X is younger than Galaxy Y.

Tags

NGSS.HS-ESS1-2

Which of the following correctly lists bodies in space from the largest to the smallest?

• universe, solar system, sun, Milky Way galaxy, Earth

• universe, Milky Way galaxy, sun, solar system, Earth

• Earth, sun, solar system, Milky Way galaxy, universe

• universe, Milky Way galaxy, solar system, sun, Earth

Tags

NGSS.MS-ESS1-3

Andromeda is a galaxy close to the Milky Way. From the side, Andromeda looks like a flat disc with a bulge in the middle. From above, Andromeda has “arms” of stars that curve around the central bulge of stars. What type of galaxy is Andromeda?

• a spiral galaxy

• a planetary nebula

• an irregular galaxy

• an elliptical galaxy

A planetarium is designing a model of the Milky Way. What should be represented in the model to most accurately represent the Milky Way to visitors?

• dust, gas, and empty space

• hundreds of billions of stars, along with planets, nebulae, and black holes

• the sun, eight planets and their moons, some asteroids, and comets

• billions of spiral galaxies, irregular galaxies, elliptical galaxies, and nebulae