Vocabulary Quiz - VocabForce

1. neutron star

angle between observer, object, and reference point

movement in the direction of rotation

group of multiple galaxies bound by gravity

dense remnant of supernova

2. stellar magnetic field

the study of planets

instrument for observing distant objects

magnetic field associated with a star

orbit with zero inclination

3. metallicity

X-ray bright optically normal galaxy

point in orbit farthest from the sun or star

abundance of elements heavier than helium

orbit with zero inclination

4. ring system

set of rings surrounding a planet

Moon blocks Sun from viewpoint on Earth

smaller galaxy orbiting a larger one

stars sharing common motion

5. planetary

relating to planets

degree of stretching or lengthening

star system identified via precise position measurements

astronomical color measurement system

6. astrobiology

distance light travels in one year

angle between rotational axis and orbital plane

specific date and time for astronomical data

study of life in the universe and its origins

7. superior planet

planets beyond Earth's orbit

measurement of celestial object positions and motions

bright streak from atmospheric entry

moon orbiting a minor planet

8. Kelvin–Helmholtz mechanism

point directly above observer on Earth's center

study of cosmic dust and its effects

very small meteorite in atmosphere

star's energy generated by gravitational contraction

9. minor-planet moon

compass angle of an object from a reference direction

sun's outer atmosphere visible during eclipses

moon orbiting a minor planet

tilt of orbit's plane

10. moving group

measure of time since last passage of a star crossing local meridian

curve representing stars of same age

dense central core of a galaxy or star cluster

stars sharing common motion

11. rotational modulation

time taken for one orbit

star with faint spectral lines

brightness change due to rotation

gradual change in a celestial body's axis orientation

12. geosynchronous orbit

small planetary object

dusk or dawn light period

small moon orbiting a planet

orbit with period equal to Earth's rotation

13. orbital inclination

plane of Earth's orbit around the Sun

magnetic field associated with a star

visible distribution of stars in the sky

tilt of orbit's plane

14. surface gravity

long-term gradual change

gravity experienced at a celestial body's surface

large planet composed mainly of gases

dust and gas ring around a star or planet

15. Virgo Supercluster

moon of a moon; hypothetical or minor

orbital parameter for small bodies

moon orbiting a minor planet

large galaxy cluster including Milky Way

16. stellar evolution

center of mass of two or more orbiting bodies

moon orbiting a minor planet

star exhibiting sudden brightness increases

changes a star undergoes over time

17. infrared astronomy

Earth's rotation period relative to stars

process of dominating surrounding space in orbit

study of objects in infrared spectrum

small convective cell on the Sun's surface

18. supercluster

star light reddening caused by dust

star and its planets or companions

closest distance a moon can approach without breakup

large group of galaxy clusters

19. lunar

stream of charged particles from Sun

angle between a body's orbit and reference plane

relating to the Moon

sky visible during nighttime

20. Fulton gap

dense central core of a galaxy or star cluster

study of motions of stars within systems

mass range where exoplanets are rare

spherical collection of old stars

Vocabulary Quiz:

1. neutron star

2. stellar magnetic field

3. metallicity

4. ring system

5. planetary

6. astrobiology

7. superior planet

8. Kelvin–Helmholtz mechanism

9. minor-planet moon

10. moving group

11. rotational modulation

12. geosynchronous orbit

13. orbital inclination

14. surface gravity

15. Virgo Supercluster

16. stellar evolution

17. infrared astronomy

18. supercluster

19. lunar

20. Fulton gap

Select vocabulary category you want to browse:

Vocabulary Quiz:

1. neutron star

2. stellar magnetic field

3. metallicity

4. ring system

5. planetary

6. astrobiology

7. superior planet

8. Kelvin–Helmholtz mechanism

9. minor-planet moon

10. moving group

11. rotational modulation

12. geosynchronous orbit

13. orbital inclination

14. surface gravity

15. Virgo Supercluster

16. stellar evolution

17. infrared astronomy

18. supercluster

19. lunar

20. Fulton gap

Select vocabulary category you want to browse:

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