Galaxy Review

Front

What is a galaxy?

Back

A galaxy is a massive system that consists of stars, star clusters, dust, gas, and dark matter, all bound together by gravity.

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NGSS.MS-ESS1-2

Front

What are the inner planets of the solar system?

Back

The inner planets, also known as terrestrial planets, are Mercury, Venus, Earth, and Mars.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies toward each other, depending on their masses and the distance between them.

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NGSS.MS-PS2-5

Front

How does gravity affect the motion of objects in a galaxy?

Back

Gravity governs the orbits of planets, stars, and other celestial bodies, keeping them in motion around each other.

Tags

NGSS.MS-ESS1-2

Front

What is the significance of the distance from the Sun for a planet's orbital period?

Back

Generally, the farther a planet is from the Sun, the longer its orbital period due to the weaker gravitational pull.

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NGSS.MS-ESS1-2

Front

What is the formation process of the solar system?

Back

The solar system formed from a rotating disk of gas and dust that collapsed under its own gravity, leading to the formation of the Sun and planets.

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NGSS.MS-ESS1-2

Front

What are terrestrial planets?

Back

Terrestrial planets are rocky planets that are closer to the Sun, characterized by solid surfaces.

Front

What is the difference between terrestrial and gas giant planets?

Back

Terrestrial planets have solid surfaces, while gas giants are composed mostly of gases and lack a well-defined solid surface.

Front

What role does the Sun play in the solar system?

Back

The Sun is the central star of the solar system, providing light and heat, and its gravity keeps the planets in orbit.

Tags

NGSS.MS-ESS1-2

Front

What is the relationship between mass and gravity?

Back

The strength of gravity between two objects increases with their mass; more massive objects exert a stronger gravitational pull.

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