|Visible light and radio waves are types of electromagnetic ____.
|Distance traveled divided by elapsed time is average ____.
|Things made from iron or steel (an iron alloy) are attracted to ____.
|Your ____ (but not your mass) would be less on the Moon.
|Applying the brakes on a bicycle produces ____.
|The force that keeps planets in their orbits is ____.
|Transparent ____ can disperse white light into a rainbow of colors.
|Silver, copper, gold, and other ____ are electric conductors.