The Universe

What force prevents the moon from traveling in a straight line as indicated by the dashed line in the diagram?

• The electromagnetic attraction between the sun and Earth

• The gravitational attraction between the sun and Earth

• The electromagnetic attraction between the moon and Earth

• The gravitational attraction between the moon and Earth

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which of the following is the student most likely studying?

• A meteor

• An asteroid

• A comet

• A nebula

The Milky Way galaxy is a spiral galaxy. This means that it has a central point with stars orbiting around it, giving it an appearance similar to deep water going down a drain. Earth is located in one of the spiral arms of the Milky Way galaxy. Which statement best explains why people on Earth cannot see the entire shape of the Milky Way galaxy?

• There are too many stars outside of the galaxy.

• We are located within the galaxy.

• The stars near the center of the galaxy are too large to see around.

• The center of the galaxy is a black hole which is hard to see through.

What keeps planets in the solar system orbiting in elliptical patterns around the sun?

• Kinetic energy

• Potential energy

• Inertia

• Gravity

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which of the following statements correctly compares the masses of different components of the universe? (choose 2)

• A galaxy has more mass than a star and less mass than the universe.

• A planet has less mass than a star it is orbiting and more mass than a nebula.

• A nebula has more mass than a planet and less mass than a galaxy.

• A star has more mass than a galaxy, planet, and the universe.

• A galaxy has less mass than a star and more mass than a moon.

Tags

NGSS.MS-PS2-4

A system of billions of stars, gas, and dust held together by gravity. ​ ​ ​ (a)  

• Galaxy
• Star
• Nebula
• Universe

Tags

NGSS.MS-ESS1-2

A cloud of gas that is the birthplace of stars. ​ (a)  

• Nebula
• Star
• Galaxy
• Universe

A giant ball of burning gases that gives off light. ​ (a)  

• Star
• Nebula
• Galaxy
• Universe

All existing matter and space considered as a whole. It consists of stars, dust, galaxies, and gas held together by gravity.​ (a)  

• Universe
• Star
• Nebula
• Galaxy

Which of the following explains the path of the planet in the students’ model?

• The action-reaction relationship shared between the two celestial bodies

• The magnetic attraction between the two celestial bodies

• The electromagnetic attraction between the two celestial bodies

• The gravitational attraction between the two celestial bodies

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4