The Universe

What do the Milky Way galaxy and other galaxies in the universe have in common?

• They are similar in shape.

• They rotate in the same direction.

• They contain the same number of stars.

• They are composed of similar chemical elements.

What feature is used to classify galaxies?

• size

• shape

• color

• brightness

What type of galaxy most likely can be described as a large, flat disk surrounded by arms of stars and dust?

• elliptical

• irregular

• ring

• spiral

All galaxies in the universe

• are composed of many stars.

• have a clockwise spin.

• are irregularly shaped.

• have the same number of stars.

Astronomers have been studying objects that are very bright and appear to be very far away. They have since concluded that these objects are distant galaxies with giant black holes at their center known as

• pulsars.

• quasars.

• supernovas.

• binary stars.

Tags

NGSS.MS-ESS1-2

Based on this information, about how many astronomical units is Mars from the Sun?

• 0.4

• 0.7

• 1.0

• 1.5

Tags

NGSS.MS-ESS1-3

The known universe is made up of many smaller components. Which of the components is the largest?

• Earth

• The Sun

• Halley's Comet

• Milky Way Galaxy

Tags

NGSS.MS-ESS1-3

Which statement best describes the relationship between Earth and the Milky Way galaxy?

• A. Earth is billions of light-years away from the Milky Way galaxy.

• B. Earth is part of a galaxy that is nearest to the Milky Way galaxy.

• C. Earth is located in the Milky Way galaxy but far from the galaxy center.

• D. Earth is positioned in the center of the Milky Way galaxy.

Which object is a planet found in the Milky Way galaxy?

• Orion

• Earth

• Polaris

• Titan

Tags

NGSS.MS-ESS1-3

Which list is correctly ordered from smallest to largest?

• galaxy – star – solar system – universe

• universe – galaxy – star – solar system

• solar system – star – universe – galaxy

• star – solar system – galaxy – universe

Tags

NGSS.MS-ESS1-3