What Makes Thunder?
What Makes Thunder? A bolt of lightning is a big electric spark. During a thunderstorm, electrical charges are built up in the clouds. When the charge becomes strong...
Read MoreWhat Makes Thunder? A bolt of lightning is a big electric spark. During a thunderstorm, electrical charges are built up in the clouds. When the charge becomes strong...
Read MoreHow Is Petrified Wood Formed? Wood that is petrified has been changed by nature into stone. Petrified wood is a fossil. It forms when plant material is buried by...
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