NGSS.MS-ESS1-2

What are galaxies held together by?

• Gravitational Attraction
• Stars
• Other galaxies
• Dust and Gas

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NGSS.MS-ESS1-2

A collection of stars, dust, and gas bound together by gravity is a - 

• Universe
• Solar System
• Planet
• Galaxy

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NGSS.MS-ESS1-2

Which of the following components of the universe is best described as a system of stars, gases, and dust held together by gravity.

• a nebula
• a planet
• a meteor
• a galaxy

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NGSS.MS-ESS1-2

Which object has a gravitational force so strong that it forms the center of the solar system?

• Earth

• Pluto

• the moon

• the sun

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NGSS.MS-ESS1-2

The path of an object as it revolves around another object

• revolution

• rotation

• orbit

• gravity

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NGSS.MS-ESS1-2

Gravity holds galaxies together in clusters

• False

• True

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NGSS.MS-ESS1-2

How long does it take Jupiter to revolve around the sun?

• 24 Hours

• 11.9 Years

• 21.7 Hours

• 365 Days

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NGSS.MS-ESS1-2

Our solar system is located....

• In the middle of an elliptical galaxy

• On the edge of a disc shaped galaxy

• In the middle of an elliptical galaxy

• On the edge of an spiral galaxy

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NGSS.MS-ESS1-2

The path that planets take as they orbit the center of the solar system is a result of the interaction of what two things?

• The forward motion of the planet and gravitational pull of the Sun.

• The mass of the planet and the composition of its atmosphere.

• The magnetic field generated by the planet and friction with the air.

• The age of the solar system and the radioactive decay of elements.

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NGSS.MS-ESS1-2

What is the component of the universe that is best described as a system of stars, gases, and dust held together by gravity.

• universe

• galaxy

• solar system

• planet

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NGSS.MS-ESS1-2