Covers seafloor spreading and the mechanism for continental drift.
Reviews seafloor spreading and the mechanism for continental drift.
Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
Developing plate tectonics theory took several decades and the work of many scientists. Continental drift was formulated by Alfred Wegener and seafloor spreading was developed by many scientists, including Harry Hess.
Reviews how Lord Kelvin calculated Earth's age and why his result was much too young.