ridge push, i think...
Gravity.
A change in plant growth due to gravity is gravitropism. Roots have a tendency to grow in the direction of strongest gravitational pull.
They can be called a sliding puzzle, sliding block puzzle, or sliding tile puzzle.
ridge push but figure it out yourself next time because i have had this same question on a test. (Is saying suspiciously.)
Japanese sliding doors are called fusuma Japanese sliding doors are called fusuma
cylinder
it is called a planchette
It is called gravity.
true! When solid surfaces slide over each other, the kind of friction that occurs is called sliding friction.
Sorry; there is no line between gravity and no gravity. Gravity is everywhere.
Sliding
It could be called a "runner"