Chapter 4

Fill in the blank: The Earth's surface is divided into large landmasses known as _______ and extensive water bodies called _______.

• continents, oceans

• islands, rivers

• mountains, lakes

• countries, seas

What is the present-day arrangement of continents and oceans the result of?

• Human activity

• Billions of years of geological evolution

• Recent volcanic eruptions

• Climate change

Who proposed the theory of continental drift in 1912?

• Alfred Wegener

• Charles Darwin

• Isaac Newton

• Marie Curie

Fill in the blank: According to Wegener's theory, all continents once formed a single supercontinent called _______ about 250 million years ago.

• Pangaea

• Gondwana

• Laurasia

• Atlantis

Which of the following is NOT listed as main evidence supporting Wegener's theory of continental drift?

• Fit of the continents

• Fossil evidence

• Evidence from satellites

• Paleoclimatic evidence

Why was Wegener's theory of continental drift rejected by many scientists?

• He had no evidence

• He could not explain the mechanism driving the movement of continents

• He was not a geologist

• The theory was too complex

Fill in the blank: The Plate Tectonic Theory provided the _______ that Wegener's theory lacked.

• mechanism

• evidence

• energy

• support

According to the Plate Tectonic Theory, what causes the plates to move?

• Ocean currents

• Mantle convection currents driven by heat from Earth's interior

• Wind

• Magnetic fields

Which type of plate boundary involves plates moving apart, creating new crust?

• Divergent Boundaries

• Convergent Boundaries

• Transform Boundaries

Which type of plate boundary involves plates sliding horizontally past each other?

• Divergent Boundaries

• Convergent Boundaries

• Transform Boundaries