11.2 Do continents fit together like jigsaw pieces?

What was the main idea proposed by Alfred Wegener in 1912?

• The continents have always been in their current positions.

• Continents drifted apart from a single landmass.

• Continents are fixed and immovable.

• Continents formed independently.

In which year did Wegener publish his ideas in a book?

• 1905

• 1915

• 1920

• 1930

What did mapmakers begin to draw as explorers discovered more lands?

• Ocean currents

• Maps showing newly-discovered lands

• Star constellations

• Animal migration patterns

What did Wegener argue about the continents millions of years ago?

• They were separate islands.

• They were joined together.

• They were underwater.

• They were uninhabitable.

What did Wegener propose about the formation of Pangaea?

• It formed 500 million years ago.

• It formed 299 million years ago.

• It formed 100 million years ago.

• It formed 50 million years ago.

What did scientists and explorers develop theories about since the sixteenth century?

• The shape of the Earth

• The distribution of earthquakes and volcanoes

• The speed of light

• The depth of the oceans

What is the role of technology in scientific research according to the text?

• To make research more difficult

• To provide new evidence and allow theories to evolve

• To replace human researchers

• To limit exploration

What evidence did Wegener use to prove his theory of continental drift?

• Similar animal fossils and rock types found on different continents.

• The discovery of new planets.

• The invention of the telescope.

• The study of ocean currents.

What was a major weakness in Wegener’s theory?

• He could not explain what force could move continents.

• He did not have any evidence.

• He did not publish his findings.

• He only studied one continent.

What did Wegener argue about the Ice Age?

• It never happened.

• It affected only the polar regions.

• It occurred at the same time across continents.

• It was caused by volcanic eruptions.