What do the black and green arrows in the diagram represent?

Question

A
The movement of rocks within Earth’s crust

B
The processes that transform one rock into another

C
The relative amount of each type of rock on Earth

D
The time it takes for each type of rock to form
2
Fill in the table to describe how Material A transforms into Material B in the rock cycle.

Choose answers from the answer bank to place in the table. Use the arrow keys to select an answer and press space when you're ready to drag it to a new location. Then use the arrow keys to move the answer to a response area and press space to drop it.
Material A

Required forces/processes

Material B

Sedimentary rock

Metamorphic rock

Magma

Igneous rock

Igneous

Sedimentary rock

3
Some people model the rock cycle using crayons. Match each step to its description.

Match answers from the answer bank with the items in the list. Use the arrow keys to select an answer and press space when you're ready to drag it to a new location. Then use the arrow keys to move the answer to a response area and press space to drop it.
Break a crayon into small pieces
Move pieces of crayon from one location to another
Press pieces of crayon into one solid layer
Melt crayons together and then let them cool
4
Imagine that the Earth’s core and mantle cool until they are the same temperature as the crust. How would this affect the rock cycle? Briefly justify your answer.

Observation
0

Answer 1

1. What do the black and green arrows in the diagram represent?

Correct Answer: B
The processes that transform one rock into another.

2. 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 solidification | Igneous rock | | Igneous rock | Weathering and erosion | Sedimentary rock | | Sedimentary rock | Heat and pressure | Metamorphic rock | | Metamorphic rock | Melting | Magma |

3. Match each step to its description.

1. Break a crayon into small pieces - Weathering
2. Move pieces of crayon from one location to another - Erosion/Transport
3. Press pieces of crayon into one solid layer - Lithification/Compaction
4. Melt crayons together and then let them cool - Cooling and solidification (Igneous process)

4. Imagine that the Earth’s core and mantle cool until they are the same temperature as the crust. How would this affect the rock cycle? Briefly justify your answer.

If the Earth’s core and mantle cool until they are the same temperature as the crust, the rock cycle would be severely impacted. The process of magma formation, which occurs due to extreme heat from the core and mantle, would cease. Without the heat to melt rock and create magma, the formation of igneous rocks would stop, leading to a reduction in volcanic activities. Furthermore, the processes of metamorphism would also be hindered, as heat and pressure are critical for transforming existing rocks. Overall, this cooling would likely lead to a stagnant rock cycle with fewer geological processes occurring, reducing the dynamic nature of Earth's geology.