WorksheetsCC 27 Exoplanets
Total questions: 10
Worksheet time: 7mins
When observing the night sky from a location without city lights, how many stars are typically visible to the naked eye compared to the total number of stars that exist?
A small fraction of the total.
Most of the total.
All of the total.
More than the total.
What is the term for planets that orbit stars other than our Sun?
Dwarf planets
Rogue planets
Exoplanets
Minor planets
Why is it challenging to directly observe exoplanets using telescopes?
They are too large and block the view of their stars.
They are too close to Earth.
They are very faint and are often overshadowed by the brightness of their parent stars.
Their orbits are too irregular to predict.
Which phenomenon allows astronomers to indirectly detect exoplanets by observing the slight movement of their parent stars?
Gravitational lensing
Stellar flares
Reflexive motion
Cosmic background radiation
The first exoplanets were discovered orbiting what type of celestial object?
A red giant star
A pulsar
A white dwarf star
A black hole
How was the exoplanet 51 Pegasi b, orbiting a sun-like star, primarily detected?
Direct imaging with powerful telescopes.
Observing changes in the star's light due to the Doppler shift.
Measuring the planet's gravitational pull on nearby asteroids.
Detecting radio signals emitted by the planet.
What unusual characteristic was observed about the exoplanet 51 Pegasi b?
It had multiple moons.
It was much smaller than Earth.
It orbited its star in just a few days.
It was composed entirely of rock.
What term describes large, gas giant exoplanets that orbit very close to their parent stars?
Super-Earths
Mini-Neptunes
Hot Jupiters
Ice Giants
