What was unknown to scientists during Wegener’s time?(1 point)
Responses
Earth’s crust is made of plates that move.
Earth’s crust is made of plates that move.
The coasts of some continents fit together.
The coasts of some continents fit together.
Fossils were found in many places.
Fossils were found in many places.
Mountain ranges of some continents lined up.
Mountain ranges of some continents lined up.
What did scientists observe in the ocean floor which indicates that the Pacific Ocean is becoming smaller?(1 point)
Responses
spreading
spreading
continental drift
continental drift
subduction
subduction
plates floating on the mantle
spREADING
What is the name of a supercontinent that was once made up of all of Earth’s current continents?(1 point)
Responses
Laurasia
Laurasia
Gondwana
Gondwana
Eurasia
Eurasia
Pangaea
Pangaea
During Wegener's time, the following was unknown to scientists:
- Earth's crust is made of plates that move.
- The coasts of some continents fit together.
- Fossils were found in many places.
- Mountain ranges of some continents lined up.
The correct answer is: The coasts of some continents fit together.
Explanation:
During Wegener's time, scientists were unaware of the fact that the coasts of some continents fit together. This observation later became the foundation for the theory of continental drift, which suggests that the Earth's continents were once joined together in a supercontinent called Pangaea and have since drifted apart. This idea was not widely accepted initially, but it eventually became a fundamental concept in the field of geology. The discovery and recognition of the fit between the coastlines of continents provided significant evidence in support of continental drift.