Galaxies (TEKS 8.9.B)

Which galaxy models the characteristic shape of each galaxy type? Write the letter of ONE correct answer in each box.

• B

• Elliptical

• A

• Irregular

• C

• Spiral

Tags

NGSS.MS-ESS1-2

Galaxies are composed of (a)   , gas, and (b)   held together by gravity. Some stars form in (c)   , which are large clouds of gas and dust.

• Stars

• Planets

• Nebulae

• Galaxies

Tags

NGSS.MS-ESS1-2

Write the letter of each characteristic of a galaxy in the correct box. Some answers may be used more than once. Categories: Spiral, Elliptical, Irregular.

• largest type of galaxy

• contains the most dust and gas

• rotation occurs in the same plane

• has no defined shape

• has no defined shape

• rotation occurs in the same plane

• smallest type of galaxy

• largest type of galaxy

• contains the most dust and gas

• smallest type of galaxy

Which of the following correctly shows the order of size from smallest to largest?

• galaxy → our solar system → space between galaxies

• our solar system → galaxy → space between galaxies

• our solar system → space between galaxies → galaxy

• galaxy → space between galaxies → our solar system

Which of these are evidence that helped to lead to this discovery? Circle TWO correct answers.

• Ulugh Beg discovered the angle at which Earth’s axis is tilted.

• Ancient astronomers were able to view the stars with the unaided eye.

• Scientists at the Large Hadron Collider found evidence to support the existence of the Higgs boson.

• Immanuel Kant suggested the solar system might be a rotating body of stars that is held together by gravitational forces.

• Harlow Shapley used globular clusters to show where we “live” in our galaxy and to estimate the size of the Milky Way galaxy.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which is the MOST accurate illustration of the sun’s location in the Milky Way galaxy?

Tags

NGSS.MS-ESS1-2

The Milky Way galaxy is describes as a disk of stars orbiting a central point on the disk.  Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?

• Earth is part of this galaxy.
• Many more starts exist outside the galaxy.
• The stars in the center of the galaxy are extremely small. 
• The center of the galaxy consist of a dense cluster of stars.