Regents Earth Science Mrs. Cavanagh
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Wkst- Using the ESRT- Sedimentary Rock
Answers:
Put all answers on the side.
1.According to the Earth Science Reference Tables, which
type of sedimentary rock contains the greatest range of
particle sizes?
(1) conglomerate (3) sandstone
(2) sandstone (4) siltstone
2. According to the Earth Science Reference Tables, which
characteristic determines whether a rock is classified as a
shale, a siltstone, a sandstone, or a conglomerate?
(1) the absolute age of the sediments within the rock
(2) the mineral composition of the sediments within the rock
(3) the particle size of the sediments within the rock
(4) the density of the sediments within the rock
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3. According to the Earth Science Reference Tables, particles
of which size could have formed shale?
(1) 0.2 cm (3) 0.002 cm
(2) 0.02 cm (4) 0.0002 cm
4. Which characteristic is most common in sedimentary rocks?
(1) foliation (3) intergrown crystals
(2) layering (4) glassy texture
5. Which sedimentary rock is formed by compaction and cementation of land-derived sediments?
(1) siltstone (3) rock salt
(2) dolostone (4) rock gypsum
Base your answers to questions 6 and 7 on the rock sample shown below.
6. The rounded pebbles of this rock have been cemented together to form
(1) granite, an igneous rock
(2) conglomerate, a sedimentary rock
(3) siltstone, a sedimentary rock
(4) gneiss, a metamorphic rock
7. The average size of the pebbles in the sample is
(1) 1.2 cm (3) 6.4 cm
(2) 0.2 cm (4) 13.2 cm
approximately
Base your answers to questions 8 through 10 on the drawings of six sedimentary rocks labeled A
through F.
8. Most of the rocks shown were formed by
(1) volcanic eruptions and crystallization
(3) heat and pressure
(2) compaction and/or cementation
(4) melting and/or solidification
9. Which two rocks are composed primarily of quartz, feldspar, and clay minerals?
(1) rock salt and conglomerate
(3) sandstone and shale
(2) rock salt and breccia
(4) sandstone and limestone
10. Which table shows the rocks correctly classified by texture?