Gravity and Galaxy Dynamics Quiz

Which of the following best describes the role of gravity in the formation of galaxies?

• Gravity causes galaxies to expand indefinitely.

• Gravity pulls together gas and dust to form stars and galaxies.

• Gravity has no effect on the formation of galaxies.

• Gravity only affects the motion of planets within a galaxy.

Tags

NGSS.MS-ESS1-2

Where is the birthplace of a galaxy?

• solar systems

• black holes

• nebulas

• stars

The name of our galaxy?

• Andromeda

• Milky Way

• Barred Spiral

• P-52

Which type of galaxy is characterized by a flat, rotating disk containing stars, gas, and dust, and often has a central bulge?

• Elliptical galaxy

• Irregular galaxy

• Spiral galaxy

• Lenticular galaxy

What is a nebula?

• the inside of a star

• an area of low gravity

• a cloud of gas and dust

• the remnants of a solar system

Which of the following best describes an elliptical galaxy?

• A galaxy with a well-defined spiral structure.

• A galaxy with no distinct shape or structure.

• A galaxy that is spherical or oval in shape with little gas or dust.

• A galaxy with a central bar-shaped structure.

Interpret the following data: The average distance from the Earth to the Sun is about 149.6 million kilometers, while the average distance from Mars to the Sun is about 227.9 million kilometers. What does this tell us about the relative positions of Earth and Mars in the solar system?

• Mars is closer to the Sun than Earth.

• Earth and Mars are equidistant from the Sun.

• Mars is farther from the Sun than Earth.

• Earth is farther from the Sun than Mars.

Tags

NGSS.MS-ESS1-3

Plan and describe an experiment to demonstrate the effect of gravity on a falling object.

• Drop a feather and a hammer from the same height in a vacuum and observe which hits the ground first.

• Drop a feather and a hammer from the same height in the air and observe which hits the ground first.

• Drop a feather and a hammer from different heights in a vacuum and observe which hits the ground first.

• Drop a feather and a hammer from different heights in the air and observe which hits the ground first.

Tags

NGSS.MS-PS2-4

Which of the following is a characteristic of irregular galaxies?

• They have a well-defined spiral structure.

• They have a spherical shape with little gas or dust.

• They lack a distinct shape and have an uneven distribution of stars.

• They have a central bar-shaped structure.

• The Sun has a weaker gravitational pull than Earth.

• The Sun has a stronger gravitational pull than Earth.

• The Sun and Earth have the same gravitational pull.

• The gravitational pull of the Sun is negligible compared to Earth.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4