Slide 1 Slide 2 Slide 3 In the Beginning! Early Earth -formed about 4.6 billion years ago (4.6 x 10 9 ) - age determined by radiometric means -Moon rocks 4.3 b.y.o -Oldest…
Introduction to Volcanoes! Introduction to Volcanoes! 8SCIENCE ECUADOR PASTO INDONESIA MEXICO COSTA RICA What is a volcano? A volcano is an opening in the Earthâs surface…
Introduction to Volcanoes! Introduction to Volcanoes! 8SCIENCE ECUADOR PASTO INDONESIA MEXICO COSTA RICA What is a volcano? A volcano is an opening in the Earthâs surface…