What Goes Up, But At The Same Time Goes Down, Up To The Sky And Down To The Ground

Riddle: What goes up, but at the same time goes down, up to the sky and down to the ground, my present tense and my past tense too, lets go for a ride just me and you... what am I?

Answer: A see-saw

Source: https://www.riddles.com/1047

What goes up, but at the same time goes down, up to the sky and down to the ground, my present tense and my past tense too, lets go for a ride just me and you...
what am I? — What goes up, but at the same time goes down, up to the sky and down to the ground by Anonymous v1.

Riddle: What goes up, but at the same time goes down, up to the sky and down to the ground, my present tense and my past tense too, lets go for a ride just me and you...
what am I? Answer: A see-saw — by Anonymous v2.