Question
Lab Question 1: Convection in the mantle is caused by (1 point) the outer core heating the rock near it, causing the liquid rock to rise up towards the cru the outer core heating the rock near it, causing the liquid rock to sink towards the core.
Ask by Davey Warner. in the United States
Jan 20,2025
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Answer
Convection in the mantle is caused by the outer core heating the rock near it, making the liquid rock rise towards the crust.
Solution
To answer the question about convection in the mantle, let's analyze the two options provided:
1. **The outer core heating the rock near it, causing the liquid rock to rise up towards the crust.**
2. **The outer core heating the rock near it, causing the liquid rock to sink towards the core.**
### Explanation:
- **Convection Process**: Convection in the mantle occurs due to the heat from the Earth's core and outer core. This heat causes the mantle material to become less dense and rise. As it rises, it cools down, becomes denser, and eventually sinks back down.
- **First Option**: This option suggests that the heated rock rises towards the crust. This is consistent with the convection process, where hot, less dense material rises.
- **Second Option**: This option suggests that the heated rock sinks towards the core, which contradicts the basic principles of convection. Heated material typically rises, while cooler, denser material sinks.
### Conclusion:
The correct answer is the first option: **the outer core heating the rock near it, causing the liquid rock to rise up towards the crust.** This accurately describes the convection process in the mantle.
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Simplify this solution Extra Insights
Convection in the mantle is essentially a giant slow-motion conveyor belt! The heat from the outer core warms the rocks in the mantle, causing them to become less dense and rise towards the crust. As they cool near the surface, they sink back down to be heated again, creating a continuous cycle. It’s like a lava lamp but on a planetary scale! This convection process is crucial for the movement of tectonic plates. As the mantle flows, it drags the plates along with it, contributing to phenomena such as earthquakes, volcanic eruptions, and the formation of mountain ranges. So, the next time you feel the earth tremble, just think of that bustling mantle convection happening beneath your feet!
