100 Words Related to Gravity

100 Words Related to Gravity

No. Term Definition
1. acceleration due to gravity Downward acceleration from gravity.
2. accretion disk Orbiting matter around massive object.
3. altitude Height above a reference level.
4. apoapsis Farthest point in an orbit.
5. apparent weight Measured support force on a body.
6. astronaut Person in spaceflight conditions.
7. atmospheric drag Air resistance opposing motion.
8. attraction Force drawing bodies together.
9. barycenter Common center of mass of system.
10. black hole Region with escape impossible.
11. buoyancy Upward force in a fluid.
12. center of mass Balance point of mass distribution.
13. centrifugal force Apparent outward force in rotation.
14. centripetal acceleration Inward acceleration for circular motion.
15. centripetal force Inward force for circular motion.
16. cosmic web Large-scale structure shaped by gravity.
17. curvature of spacetime Geometry change caused by mass-energy.
18. deceleration Reduction in speed or velocity.
19. density Mass per unit volume.
20. dipole anomaly Gravity variation from mass distribution.
21. downforce Aerodynamic force pressing downward.
22. drag coefficient Factor describing drag magnitude.
23. drop Fall under gravity.
24. eccentricity Measure of orbit’s noncircularity.
25. Einstein field equations Relate spacetime curvature to energy.
26. Einstein ring Ring image from gravitational lensing.
27. elevator Cabin illustrating weight changes.
28. elliptical orbit Oval path under gravity.
29. escape speed Speed needed to leave gravity well.
30. event horizon Boundary of a black hole.
31. fall Move downward under gravity.
32. falling Undergoing gravitational descent.
33. force Push or pull causing acceleration.
34. free fall Motion under gravity alone.
35. g Standard gravitational acceleration symbol.
36. g-force Acceleration felt relative to free fall.
37. galaxy cluster Group of galaxies bound by gravity.
38. geodesic Shortest path in curved spacetime.
39. geoid Earth’s mean sea-level shape.
40. gravitational acceleration Acceleration produced by gravity.
41. gravitational binding energy Energy required to disperse a system.
42. gravitational collapse Contraction under self-gravity.
43. gravitational constant Constant in Newton’s gravity law.
44. gravitational field Region where gravity acts.
45. gravitational lensing Light bending by gravity.
46. gravitational mass Mass determining gravitational interaction.
47. gravitational microlensing Small lensing brightening by a mass.
48. gravitational potential Potential energy per unit mass.
49. gravitational radiation Energy carried by gravitational waves.
50. gravitational redshift Light loses energy climbing gravity.
51. gravitational tide Differential gravity across an object.
52. gravitational time dilation Time runs slower in stronger gravity.
53. gravitational waves Ripples in spacetime curvature.
54. gravity anomaly Local deviation from expected gravity.
55. gravity assist Speed change via planetary flyby.
56. gravity gradient Change of gravity with position.
57. gravity well Potential “dip” around a mass.
58. inertial mass Mass resisting acceleration.
59. inertial reference frame Non-accelerating frame for Newton’s laws.
60. inverse-square law Force decreases with distance squared.
61. isostasy Crust floating balance under gravity.
62. J2 perturbation Orbit effect from Earth’s bulge.
63. jerk Rate of change of acceleration.
64. Kepler’s laws Rules describing planetary orbits.
65. kilogram SI unit of mass.
66. lagrange point Stable point in two-body gravity.
67. launch window Timing for efficient orbital insertion.
68. lift Aerodynamic force opposing weight.
69. mass Amount of matter; inertia measure.
70. mass-energy Energy content that curves spacetime.
71. microgravity Near-weightless orbital environment.
72. moon Natural satellite bound by gravity.
73. Newton’s law of gravitation Attraction proportional to masses, inverse-square.
74. Newton’s second law Force equals mass times acceleration.
75. normal force Support force perpendicular to surface.
76. null geodesic Light’s path in curved spacetime.
77. obliquity Axial tilt affecting gravity field.
78. orbit Path around a body under gravity.
79. orbital decay Orbit shrinks due to drag or tides.
80. orbital energy Total energy of an orbiting body.
81. orbital inclination Tilt of orbit relative to reference plane.
82. orbital period Time to complete one orbit.
83. orbital velocity Speed needed to maintain orbit.
84. periapsis Closest point in an orbit.
85. planet Large body orbiting a star.
86. potential energy Energy stored by position in field.
87. precession Slow rotation of orbital axis.
88. projectile motion Trajectory under gravity and initial velocity.
89. radial acceleration Acceleration toward or away from center.
90. reaction force Equal and opposite force response.
91. relativity Physics of spacetime and gravity.
92. Roche limit Distance where tides can disrupt a body.
93. satellite Body orbiting another by gravity.
94. Schwarzschild radius Radius defining black hole horizon.
95. sink rate Downward speed under gravity effects.
96. solar system Star and bound orbiting bodies.
97. space elevator Proposed tether balancing gravity and rotation.
98. space-time Unified framework of space and time.
99. spaghettification Tidal stretching near black holes.
100. specific orbital energy Orbital energy per unit mass.