The video explores the concept of plate tectonics, starting with the observation that continents appear to fit together, suggesting past connections. It discusses the mid-Atlantic ridge and volcanic activity as clues to plate movement. The video delves into magnetic rock evidence, showing how Earth's magnetic field changes over time, supporting the idea of moving plates. It highlights magnetic striping on the ocean floor as definitive evidence of plate movement. Finally, it explains how modern GPS technology measures plate movements, confirming the theory.

Which continents are noted for appearing to fit together?

• Asia and Africa

• South America and Africa

• Australia and Antarctica

• North America and Europe

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What was the initial clue that suggested continents were once connected?

• Similar rock formations

• Fossil evidence

• Climate patterns

• The shape of the continents

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What geological feature in the Atlantic Ocean suggested plate movement?

• Deep ocean trench

• Mid-Atlantic ridge

• Large island chain

• Submarine canyon

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What is the significance of underwater volcanic activity along the mid-Atlantic ridge?

• It is unrelated to plate tectonics

• It suggests the ocean floor is expanding

• It indicates the presence of hotspots

• It proves the existence of deep-sea creatures

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What does the alignment of magnetic rocks indicate?

• Earth's magnetic field has reversed over time

• Magnetic rocks always align north-south

• Magnetic rocks are not influenced by Earth's magnetic field

• Earth's magnetic field has never changed

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What does the reversal of Earth's magnetic field tell us?

• Magnetic reversals affect the ocean's tides

• The magnetic field has flipped multiple times

• Magnetic reversals cause earthquakes

• The Earth is slowly losing its magnetic field

What provides conclusive evidence of seafloor spreading?

• Continental drift theory

• Presence of mid-ocean ridges

• GPS measurements of plate movement

• Symmetrical magnetic striping on the ocean floor

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What does the symmetrical arrangement of magnetic stripes on the ocean floor indicate?

• Impact of meteorites

• Random geological processes

• Seafloor spreading due to plate tectonics

• The ocean floor is static

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How are modern plate movements measured?

• Studying fossil records

• Through satellite GPS technology

• By mapping ocean currents

• Using deep-sea drilling

At what rate do most tectonic plates move?

• 10 meters per year

• 5 km per year

• 100 cm per year

• About 1 cm per year

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