Today's Sentence
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Just like the surface of our dynamic planet, the story of plate tectonics shows us it can take a little while before earth-shaking ideas change the world.
Original Video：
How Do We Know Plate Tectonics Is Real?
Key Vocabulary
1. dynamic
dynamic
[daɪˈnæm.ɪk] (adj.)
2. surface
surface
[ˈsɝː-] (n.)
3. continental drift
continental drift
(n.)
4. plate tectonics
plate tectonics
(n.)
5. mantle
mantle
[ˈmæn.t̬əl] (n.)
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