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12th Grade Microlensing Quizzes, Questions & Answers

12th Grade

Top Trending Microlensing Quizzes

Nomads of the Dark: Rogue Planets Explained Quiz

The lonely drifters of the galaxy. Some planets have no home star and wander through the darkness alone, but their gravity still bends light. This rogue planets explained quiz looks at how we find these dark, sunless...

Questions: 20 | Attempts: 15 | Last updated: Feb 20, 2026

Sample Question 1
Which of the following best provides rogue planets explained by their physical definition?

Planets that have extreme elliptical orbits

Planets that orbit two stars instead of one

Planetary-mass objects that orbit the galactic center directly rather than a star

Small stars that have run out of fuel

Planets located in the Oort Cloud

Sample Question 2
Most galaxy wandering planets are thought to have formed in empty space like tiny stars.

True

False

Sample Question 3
Why is the duration of a microlensing event much shorter for a rogue planet than for a star?

Planets move faster than stars

Planets are much closer to Earth

The planet's lower mass creates a much smaller Einstein radius

Planets are made of gas

The planet's gravity is repulsive

Recent Microlensing Quizzes

Weighing the Invisible: Gravitational Lensing Calculations Quiz

Questions: 20 | Attempts: 10 | Last updated: Feb 20, 2026

Sample Question
Which equation represents the standard deflection angle (alpha) in gravitational lensing calculations?

Alpha = 2GM / rc²

Alpha = 4GM / rc²

Alpha = GM / r²

Alpha = mc²

Alpha = 4GM / r