What is the term for the tidal stretching of an object as it falls into a black hole?

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Study for the NOVA Black Hole Apocalypse Astronomy Test. Explore astronomy with our rich content. Use flashcards and multiple-choice questions to enhance your knowledge. Prepare effectively and uncover the mysteries of black holes. Get ready for your exam!

Multiple Choice

What is the term for the tidal stretching of an object as it falls into a black hole?

Explanation:
Spaghettification describes the tidal stretching that happens when an object falls into a black hole. Gravity isn’t the same strength everywhere across the object—the side closer to the black hole feels a stronger pull than the far side. As the object accelerates inward, this difference in force pulls it apart along the radial direction, while it gets compressed in directions perpendicular to the pull. The result is an extreme elongation into a long, thin shape—the image behind the term spaghettification. This effect grows with the strength of the gravity gradient, which is why it’s a hallmark of black holes. The other terms refer to different phenomena: redshift is about light losing energy climbing out of a gravity well, accretion describes matter spiraling into the hole, and tidal flicker isn’t a standard term in this context.

Spaghettification describes the tidal stretching that happens when an object falls into a black hole. Gravity isn’t the same strength everywhere across the object—the side closer to the black hole feels a stronger pull than the far side. As the object accelerates inward, this difference in force pulls it apart along the radial direction, while it gets compressed in directions perpendicular to the pull. The result is an extreme elongation into a long, thin shape—the image behind the term spaghettification. This effect grows with the strength of the gravity gradient, which is why it’s a hallmark of black holes. The other terms refer to different phenomena: redshift is about light losing energy climbing out of a gravity well, accretion describes matter spiraling into the hole, and tidal flicker isn’t a standard term in this context.

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