The Universe

What is the force that holds a galaxy together?

• heat

• dark energy

• light

• gravity

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which galaxy do we live in?

• Andromeda

• Milky Way

• Small Magellanic Cloud

• Virgo

Tags

NGSS.MS-ESS1-2

Which answer correctly compares the masses of two objects in the universe?

• A galaxy has less mass than nebulae and more mass than a star

• A star has more mass than a planet and less mass than a galaxy

• A moon has more mass than a star and less mass than a planet

• A universe has less mass than a galaxy and more mass than a planet

Tags

NGSS.MS-PS2-4

A system of billions of stars, gas, and dust held together by gravity is called a-

• star

• nebula

• galaxy

• universe

Tags

NGSS.MS-ESS1-2

Which answer choice best describes a star?

• a sphere of gas and dust that contains many elements and produces light from fusion and fission reactions.

• a collection of gases from several nebulae hot enough to cause a nuclear reaction

• a sphere of matter with a temperature and density great enough to cause a nuclear reaction at its center

• a collection of hot gases that produces heat but no light

Categorize this galaxy.

• irregular

• spiral

• elliptical

• crab

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular 
• Irrational

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular
• Irrational

Which of these statements is true concerning the Milky Way galaxy?

• Earth is located in the center of the Milky Way galaxy.

• The Sun is one star that can be found in the Milky Way galaxy.

• There are approximately one million stars in the Milky Way galaxy.

• There are nine planets in the Milky Way galaxy.

A _____ is the death of a large star by massive explosion.

• Galaxy

• Nebula

• Universe

• Supernova