Motion photography is often referred to as a kind of abstract imagery. Long exposures can transform something familiar into something else.
A favorite place I like to play with long exposures is on the New York State Fair Midway with rides moving fast wrapped up in bright colors.
Zooming in on fireworks display can yield colors and patterns not noticed during the show as people take in the entire sky.
Grab your tripod or other stabilizing device and post your long exposure photos to the Abstract Assignment.