Fill in the word that completes each statement. Building up electric charges on a Van de Graaff generator is an example of static
.

Lightning is an example of static

Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen. t or f

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

In science and physics what is the standard unit of measure for speed?