Question

1. choose the best answer.

______ galaxies typically form odd shapes such as a ring or a toothpick.
○ elliptical
○ spiral
○ cluster
○ irregular

1. choose the best answer.

what travels at 299 792 km/s (186,282 mi/s)?
○ earth
○ light
○ the rotation of the milky way
○ the moon

Explanation:

Question 12

To determine the type of galaxy that forms odd shapes, we analyze each option:

• Elliptical galaxies are smooth and oval - shaped, not odd - shaped.
• Spiral galaxies have a distinct spiral structure with a central bulge and arms, not odd - shaped like a ring or toothpick.
• Cluster is a group of galaxies, not a type of galaxy with a shape.
• Irregular galaxies do not have a regular, symmetrical shape and can form odd shapes such as rings or elongated (toothpick - like) structures.

We know the speed of light in a vacuum is a well - known constant, approximately 299,792 km/s (or 186,282 mi/s).

• Earth's orbital speed is much less than this.
• The rotation speed of the Milky Way is not at this speed.
• The Moon's orbital speed around the Earth is also much less than this speed.

Answer:

D. Irregular

Question 13