Matching Pairs Vocabulary - Reading: How do you exaplain that? Pt.2Online version Advanced 3: Unit 8: Lesson 1 by Daniel Valdivia 1 barefoot 2 sheet 3 Footprint 4 radiation 5 injury 6 hiker 7 ripped 8 skull a form of energy that can come from heat or light or nuclear energy not wearing any shoes or socks: a person who goes for a long walk in the countryside the mark made by a person's or animal's foot the bones of the head that surround the brain physical harm to the body caused by an accident or an attack