What is the primary reason spiral galaxies do not rotate like solid objects?
Galaxies Don't Spin The Way You Think

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Physics, Science
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
They have a fixed axis of rotation.
They are made of solid matter.
They are influenced by density waves.
They are not affected by angular momentum.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do density waves affect the structure of spiral galaxies?
They make the arms disappear.
They keep the arms in a fixed position.
They cause the arms to rotate rapidly.
They cause the arms to wind tighter.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role does dark matter play in the rotation of galaxies?
It makes stars orbit in reverse.
It has no effect on galaxy rotation.
It slows down the stars at the galaxy's edge.
It speeds up the stars at the galaxy's edge.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do astronomers study the changes in star orbits over time?
By observing nearby stars only.
By using telescopes to look at distant galaxies.
By measuring the temperature of stars.
By analyzing the color of galaxies.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is unique about the galaxy NGC 4622?
It has no dark matter.
It rotates in the opposite direction of its arms.
It has no spiral arms.
It is a lenticular galaxy.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What distinguishes elliptical galaxies from spiral galaxies?
They have more star formation.
They have more dust lanes.
They contain mostly older stars.
They rotate faster than spiral galaxies.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What characteristic is shared by lenticular galaxies?
They exhibit features of both spiral and elliptical galaxies.
They are completely devoid of stars.
They have the highest rate of star formation.
They have no dust rings.
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