When you add heat to wood it burns. the cellulose that makes up wood is converted to carbon dioxide, water vapor, and ash. this transfer of energy caused a change to the of wood.

The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Arrange the images in order to show how lake-effect snow occurs.