How Do Debris Disks and Planet-Forming Disks Differ

question 43

Multiple Choice

How do debris disks and planet-forming disks differ?

• A) Debris disks have higher density than planet-forming disks.
• B) Debris disks contain larger amounts of gas than planet-forming disks.
• C) Debris disks are found around older stars and planet-forming disks around younger stars.
• D) Only debris disks are expected to be affected by the gravity of planets within them.

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Definitions:

Optimal Foraging Hypothesis

A theory suggesting that animals maximize their net energy intake per unit of time spent foraging.

Hummingbird

A small bird known for its ability to hover in mid-air thanks to rapid wing flapping, feeding primarily on nectar and playing a role in pollination.

Nectar

A sweet liquid produced by plants, which serves as a food source for pollinators such as bees and butterflies.

Optimal Foraging Hypothesis

A theory suggesting that animals will maximize their net energy intake per unit of foraging time, leading to behaviors that are most efficient in gaining resources.