Mantle material rises, cools, and sinks in a repeating cycle called this.
Convection Current
a force that acts on an object without any physical contact between the objects.
non-contact forces
Plates sinking beneath other plates occur at this type of boundary.
Convergent boundaries
A river depositing sediment creates this landform.
Delta
Forces that change an object's motion
Unbalanced forces
Two things gravity depends on
Mass and distance
The thin, putty-like layer on top of the mantle that allows the crust to float on it.
asthenosphere
This rule states lower rock layers are usually older
Law of Superposition
Two positive electric charges will do what?
Repel
A useful inherited trait is called this.
Adaptation
What forms at a divergent boundary between two oceanic plates?
Mid-ocean ridge
Landforms built up by deposition are caused by this.
Constructive Processes
Motion is measured based on this.
Reference Point
Explain how/if weight and mass change on the Moon compared to the Earth.
Mass always stays the same. Weight has to do with gravity, which is based on mass --> greater mass, greater gravitational field, higher weight