One of these photos is a photo of pebble-sized sediments, the other is of a sing

Question

One of these photos is a photo of pebble-sized sediments, the other is of a single sedimentary rock. Label the photos. What needs to happen so that pebble-sized sediments become a sedimentary rock? Two students are debating about the pebbles in the image on the left and what type of rock the pebbles are. Student 1: I think that each pebble is a sedimentary rock because the pebbles have been broken from much larger rocks. Student 2: I don t agree. Each pebble can be any type of rock - igneous, metamorphic, or sedimentary. Because they have not yet been compacted and cemented together, they have not yet been turned into a sedimentary rock like in the photo on the right. With which student do you agree? Why? Explain why you would not call pebbles on a beach a sedimentary rock.

Explanation / Answer

Question 3

Answer: left photo is pebble sized sediments and right photo is a single sedimentary rock.

Question 4

Answer: cementation and compaction needs to happen so that pebble sized sediment to become sedimentary rock.

Question 5

I agree with student 2

Because student 2 has the right explanation about pebbles.

Question 6

Because of pebbles need to be compacted and cemented with sediment to become sedimentary rock, so here pebbles are not compacted and cemented yet.

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