Vocabulary Quiz - VocabForce

1. astrogeology

highest point a celestial object reaches in sky

measurement of celestial object positions and motions

point directly above observer on Earth's center

geology of planets and moons in the solar system

2. zodiac

constellation belt along ecliptic

central dense region of a spiral galaxy

angle between observer, object, and reference point

elusive subatomic particle

3. appulse

galaxy with spiral arms structure

imaginary line around which an object spins

the study of planets

close approach of celestial objects as seen from a vantage point

4. scattered disc

distant icy body region beyond Neptune

star's movement across the sky over time

moon cycle with predictable phases

plane containing the total angular momentum of system

5. hour circle

great circle passing through celestial poles and a point

small Solar System body between asteroids and comets

our galaxy's luminous band in sky

material around star from collisions or remnants

6. orbital elements

parameters defining an orbit

outer layer of a star

material ejected outward from a star as disk

pair of stars appearing close in the sky

7. multi-messenger astronomy

measure of light absorption

stars beginning hydrogen fusion

use of diverse signals for study

parameters defining an orbit

8. lobster-eye optics

celestial objects like planets

highest point in satellite orbit around Earth

vast group of connected galaxies

wide-angle imaging for X-ray telescopes

9. solar eclipse

stream of charged particles from Sun

astronomical color measurement system

Moon blocks Sun from viewpoint on Earth

study of planets

10. redshift

study of celestial objects at submm wavelengths

planet appears to move backward in sky

shift toward longer wavelengths indicating recession

time for a galaxy to complete an orbit

11. opposition

planet alignment opposite Sun

scientific study of celestial objects and phenomena

great circle passing through celestial poles and a point

closest point in orbit

12. orbit

path of celestial object around a star

planet orbiting a star outside the solar system

measure of how elliptical an orbit is

dense stellar remnant like white dwarf or neutron star

13. standard gravity

star exhibiting sudden brightness increases

acceleration due to gravity at Earth's surface

jet of material from Sun's surface

small planetary object

14. nova

stellar explosion increasing brightness

planet closer to the Sun than Earth

imaginary sphere with stars fixed on its inside

celestial objects like planets

15. magnetic switchback

early stage star still gathering mass

sudden magnetic field change in solar wind

object emitting high-energy radiation

table listing astronomical object positions over time

16. celestial equator

projection of Earth's equator onto celestial sphere

point directly above observer on Earth's center

region of space with gravity so strong nothing escapes

celestial body's companion (moon)

17. proper motion

celestial longitude coordinate

Sun and orbiting celestial bodies

star's movement across the sky over time

gravity stretching objects due to nearby masses

18. asteroid

velocity causing a celestial body to disintegrate

orbit aligning with a body's rotation

small rocky body orbiting the Sun, smaller than planets

study of orbital motion

19. argument of periapsis

radius of a celestial object as seen from Earth

spatial extent of morning astronomical phenomena

angle from ascending node to periapsis in orbit

celestial coordinates based on the ecliptic plane

20. solar moss

brightest star in the night sky

orbit with period equal to Earth's rotation

close approach of celestial objects as seen from a vantage point

bright, fuzzy features on the Sun's surface

Vocabulary Quiz:

1. astrogeology

2. zodiac

3. appulse

4. scattered disc

5. hour circle

6. orbital elements

7. multi-messenger astronomy

8. lobster-eye optics

9. solar eclipse

10. redshift

11. opposition

12. orbit

13. standard gravity

14. nova

15. magnetic switchback

16. celestial equator

17. proper motion

18. asteroid

19. argument of periapsis

20. solar moss

Select vocabulary category you want to browse:

Vocabulary Quiz:

1. astrogeology

2. zodiac

3. appulse

4. scattered disc

5. hour circle

6. orbital elements

7. multi-messenger astronomy

8. lobster-eye optics

9. solar eclipse

10. redshift

11. opposition

12. orbit

13. standard gravity

14. nova

15. magnetic switchback

16. celestial equator

17. proper motion

18. asteroid

19. argument of periapsis

20. solar moss

Select vocabulary category you want to browse:

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