Exploring Convection Currents and Plate Tectonics

The video demonstrates convection currents using a model with water and food coloring. A light bulb simulates Earth's core heat, causing currents in the water, representing mantle movement. These currents drive plate tectonics, forming features like ridges and trenches. The Earth's surface is reshaped by mantle heating, similar to atmospheric convection where warm air rises and cool air sinks.

What was used to represent the heat source in the demonstration?

• A heater

• A 100 watt light bulb

• A stove

• A candle

What did the blue and red food coloring reveal in the water?

• Different temperatures

• Separate currents

• Chemical reactions

• Evaporation

In the model, what does the water represent?

• The ocean

• The atmosphere

• The mantle

• The crust

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What natural phenomenon is responsible for the movement of tectonic plates?

• Tsunamis

• Convection currents

• Volcanic eruptions

• Earthquakes

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What type of boundary is formed where convection currents rise up?

• Convergent boundary

• Transform boundary

• Divergent boundary

• Subduction zone

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What geological feature is created by divergent boundaries?

• Earthquakes

• Volcanoes

• Mid-ocean ridges

• Mountains

What causes the surface of the Earth to be constantly reshaped?

• Meteor impacts

• Tidal forces

• Uneven heating of the mantle

• Erosion

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What happens to warmer air in Earth's atmosphere?

• It moves horizontally

• It stays at the same level

• It rises up

• It sinks to the ground

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