🪀↕️

#yoyo #rebound #vertical motion

🏀↕️

#dribble #rebound #vertical motion

⛰️🪨↕️🔥

#isostasy #isostatic adjustment #lithosphere #asthenosphere #vertical motion #crustal equilibrium

📖⬆️⬇️

#book movement #physical book #page scanning #vertical motion

😄⬆️⬇️

#enthusiastic nod #definite yes #head nod #vertical motion

✋⬆️⬇️

#hand movement up down #vertical motion #indicate height #signal direction #hand gesture up down