What was unknown to scientists during wegener's time?
A. Mountain ranges of some continents lined up
B. The coasts of some continents fit together
C. Fossils were found in many places
D. Earth's crust is made of plates that move
D. Earth's crust is made of plates that move
Which continents have coastlines and mountain ranges that match up?
A. Africa and North America
B. Asia and Antarctica
C. North America and South America
D. Africa and South America
D. Africa and South America
What did scientists observe in the ocean floor which indicates that the pacific ocean is becoming smaller?
A. Continental drift
B.plates floating on the mantle
C. Subduction
D.spreading
D. Spreading
What is the name of a supercontinent that was once made up of all earth's current continents?
A. Eurasia
B. Pangaea
C. Gondwana
D.laurasia