True or false: the arrows on a motion map must be connected to the dots on a motion map.

True. The arrows on a motion map must be connected to the dots on a motion map.

Explanation:

A motion map represents the movement of an object. The dots used in a motion map represent  the position of an object and its displacement is represented by arrows. The dots come at the tail end of the arrows.

The direction of the arrows denotes the direction of displacement vector of the object. Thus reversing the direction of the object reverses the direction of arrows in a motion map. The length of the arrow represents the magnitude of the velocity vector which is the speed of the object.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.