Unit 8.4 (MiSTAR)

The sun is located in the center of the system model because the sun: __________ .

• is the least massive object in the system, and more massive objects orbit less massive objects.

• is the most massive object in the system, and less massive objects orbit more massive objects.

• has the lowest temperature, and hotter objects orbit cooler objects.

• has the highest temperature, and cooler objects orbit hotter objects.

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Based on your understanding of the formation of the solar system, describe why gravity was essential to the formation of the stars in the Milky Way galaxy.

• Gravity was essential in the formation of the Milky Way galaxy because it was the force that caused the dust and gas to clump together to form stars.

• Gravity was not essential in the formation of the Milky Way galaxy because it was the force that caused the dust and gas to clump together to form stars.

• Gravity was essential in the formation of the Milky Way galaxy because it was the force that caused the dust and gas to move further apart to form stars.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Using Table 2, what is one difference that the planets have?

• Some of the planets have moons.

• Some of the planets are millions of kilometers from the Sun.

• Some of the planets orbit the Sun.

• Some planets are rocky, some are gas compositions.

Using Table 2, what are the similarities that the planets have?

• All of the planets have moons.

• All of the planets are the same distance from the Sun.

• All of the planets orbit the Sun.

• The rocky planets are bigger than non-rocky planets.

The image shows 8 locations of a mystery object over a period of time. Each number represents the object's position at a different time.

Based on your knowledge of how things move throughout our solar system, what might this object be?

• Comet

• Asteroid

• Planet

• A Moon

Tags

NGSS.MS-ESS1-2

As the mystery object moves from position 1 to 3, it will feel:

• a stronger gravitational pull from the Sun

• a weaker gravitational pull from the Sun

• the same gravitational pull from the Sun

• cannot answer without knowing the size of the object

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

As an object moves closer to the Sun, describe what phenomenon occurs:

• a stronger gravitational pull from the Sun as the distance between the objects decreases

• a weaker gravitational pull from the Sun as the distance between the objects decreases

• the same gravitational pull from the Sun as the distance between the objects decreases

• cannot answer without knowing the size of the object

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which letter in this diagram shows our modern solar system with planets orbiting around the sun?

• a

• b

• c

• d

• e

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

Using the diagram, from the time (a) begins to form and finishes at (e) what do the clumps of material at (a) eventually become in the actual solar system at (e)?

• suns

• planets

• moons

• asteroids

• all of the above

Tags

NGSS.MS-ESS1-2

Which letter in this diagram shows the nebula that was left over after an ancient star exploded?

• a

• b

• c

• d

• e