They explore by climbing, touching, and pulling things down that they are not tall enough to see. They see you turn on lights and plug in appliances, and they try it, too. They don't know there is danger all around them. Keep these items out of reach or otherwise safely protected. Never leave your child alone with electrical cords in easy reach.
Babies can poke metal objects into uncovered outlets.
Buy inexpensive outlet caps at the hardware store. Babies can get a shock. Those bright lights can burn. KEEP space heaters out of your child's reach. KEEP appliances such as radios and hairdryers away from bathroom sinks and tubs.