- The black and green arrows in the diagram represent:
A - The movement of rocks within Earth’s crust.
- Fill in the table to describe how Material A transforms into Material B in the rock cycle.
| Material A | Required forces/processes | Material B | |-----------------------|------------------------------------------|------------------| | Magma | Cooling and recrystallization | Igneous rock | | Igneous rock | Weathering, erosion, deposition | Sedimentary rock | | Sedimentary rock | Temperature and pressure | Metamorphic rock | | Metamorphic rock | Melting | Magma |
- Match each step to its description:
- Break a crayon into small pieces: Weathering
- Move pieces of crayon from one location to another: Erosion
- Press pieces of crayon into one solid layer: Form sedimentary rock
- Melt crayons together and then let them cool: Form igneous rock
- If the Earth’s core and mantle cool until they are the same temperature as the crust, this would significantly slow down or halt the rock cycle. The processes that drive the movement of tectonic plates, which include convection currents in the mantle, would diminish. As a result, most geological activity such as volcanism and metamorphism, which rely on high temperatures and pressures, would reduce or cease altogether. This could lead to less rock formation and transformation, essentially stagnating the rock cycle and making the surface geology more stable over time.