I. TRUE OR FALSE
Write t if the statement is true and f if the statement is false
1. The Continental Drift Theory of Alfred Wegener states that the continents were once a
part of a large landmass called Pangaea which drifted away from each other.
2. The crust is not the thinnest layer of the Earth
3. The outer core is made up of moiten material and accounts for the Earth's magnetic field
4. The scientist believes that the plate's movement is not actually due to the convection
currents in the mantle
5. The asthenosphere is the strong layer of the mantle on which the thosphere floats
6. The old seafloor is destroyed at the subduction zone and melts inside the mantie
7. The Theory of Plate Tectonics he ps explain the formation and destruction of the Earth's
crust and its movement over time.
8. The mantle is the middle layer of the earth. It makes most of the Earth s volume and mass
9. The speed, reflection and refraction properties of seismic waves are used by scientists to
study the structure and composition of the Earth's interior.
10. Alfred Wegener based his theory on evidences from fossils imbedded in rocks and rock
formation​