Friction and Gravity Crossword

What involves the type of surface involved and how hard their surfaces are pushed together?
What is defined as "The force that attracts a body toward the center of the earth."
Fill in the blank: Friction is the _____ that one surface exerts on another.
When a solid surface slides over another solid surface what occurs?
An example of sliding friction is: ________ (use word bank)
When a rolling object rolls over a surface, what occurs?
What's an example of rolling friction? (use word bank)
True or False: The force needed to overcome sliding friction is much less than the force needed to overcome rolling friction.
Fill in the blank: A ______ is one way of reducing friction between surfaces.
What is the type of friction that occurs when an object moves through a liquid or gas? (Water slowing speed of a boat)
While driving a car on ice roads is there a high friction or low friction?