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1. What is continental drift?
A
The movement of Earth's continents over time
B
The process of forming new continents
C
The sinking of Earth's continents into the ocean
2. What is a convection current?
A
The circular motion of heat in a fluid
B
The rotation of Earth on its axis
C
The movement of Earth's tectonic plates
3. What causes convection currents?
A
Gravity
B
Uneven heating of a fluid
C
Magnetic fields
4. How do convection currents affect Earth's crust?
A
They move the tectonic plates
B
They cause earthquakes
C
They create mountains
5. The European continent moved at a speed of 3 cm/yr, while the Antarctic continent moved at 2 cm/yr. Which one moves faster?
A
Antarctic
B
Europe
C
Antarctic and Europe