Pale peach, white, and black rock, with a rough, bumpy texture.

Which characteristics describe this rock sample? Check all that apply.

large crystals
coarse texture
evidence of rapid cooling
fine texture
evidence of slow cooling
small crystals

1 answer

Based on the description of the rock sample as having a rough, bumpy texture and consisting of pale peach, white, and black colors, the following characteristics are applicable:

  • Coarse texture: This indicates that the rock has larger grains or crystals visible to the naked eye, which aligns with the rough, bumpy texture you mentioned.

  • Large crystals: If the texture is coarse, it typically means that there are larger crystals present in the rock.

The other characteristics would not apply as follows:

  • Evidence of rapid cooling: This typically indicates a fine texture, which is not applicable here since the texture is described as coarse.

  • Fine texture: This would indicate smaller grains or crystals, contradicting the coarse texture.

  • Evidence of slow cooling: While this characteristic can be inferred from a coarse texture (indicating formation from magma, where slow cooling allows for larger crystal growth), it does not directly describe the rock sample itself.

  • Small crystals: This would contradict the coarse texture.

In summary, the applicable characteristics are coarse texture and large crystals, while evidence of slow cooling may also be inferred but is not a direct descriptor.