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Pebble: Quiz

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More interesting facts on Pebble

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Question 1: Pebble tools are among the earliest known man-made artifacts, dating from the ________ period of human history.
PaleolithicStone AgePaleolithic religionMiddle Paleolithic

Question 2: Pebbles left above the high water mark, may have the growth of organisms such as ________ on them, signifying the lack of contact with sea water.
PeltigeralesParmeliaceaeLobaria pulmonariaLichen

Question 3: A pebble is a clast of rock with a particle size of 4 to 64 millimeters based on the Krumbein phi scale of ________.
SedimentologySedimentary exhalative depositsOre genesisSedimentary rock

Question 4: Pebbles come in various colors and textures, and can have streaks of ________ and different colored sedimentary rock.
AgateAmethystOpalQuartz

Question 5: Pebbles can also form in rivers, and travel into ________ where the smoothing continues in the sea.
Coral reefEstuaryLagoonTide pool

Question 6: This type of beach has armoring characteristics with respect to wave ________, as well as ecological niches which can provide habitat for animals and plants.
DuneMouth barRiver deltaErosion







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