5which of the following is a use for fossils founds in sedimentary rocks?
A.interpreting past environments
b.indication when the rock formed
c.matching rocks of the same age found in different places
d. all of the above
6 lava that cools so quickly that ions do not have time to arrange themselves crystals will for igneous rocks with a ___ texture
A.porphyritic
B.glassy
C coarse grained
D.fine grained
3.why can two igneous rocks have the same minerals but different names?
A.different colors
B. different sizes
C. different textures
D. different textures
8.A conglomerate is a rock that forms as a result of __
A. intense heat and pressure
B. compaction and cementation
C. rapid cooling
D. slow cooling
9. which of the following is responsible for the formation of rock gypsum
A. weathering and erosion
B. cooling of magma
C. precipitation from a water solution
D. re crystallization from high temps and high pressures
10. what type of rock is composed of very fine crystalline quartz?
A. chalk
B. sandstone
C. rock gypsum
D. flint
11. a clastic sedimentary rock with particles that are 1.5 millimeters in diameter would be classified as a __
A. conglomerate
B. sandstone
C. breccia
D. crystalline limestone
12 Sedimentary rocks with ripple green marks suggest that the rocks formed ___
A. along a beach or stream bed
B. when ancient animals walked over them
C. from the shell fragments of ancient sea dwelling animals
D. when mud dried and shrank
13. what rock forming process occurs when hot magma forces its way into rock?
A. regional metamorphism
B. biochemical sedimentation
C. contact metamorphism
D. depostition
5. The use for fossils found in sedimentary rocks is for interpreting past environments, indicating when the rock formed, and matching rocks of the same age found in different places. The answer is (d) all of the above. To determine this, you can consider that fossils found in sedimentary rocks provide valuable information about past environments and can be used to identify the age of the rocks they are found in. They can also be used to correlate rocks of the same age found in different locations.
6. When lava cools so quickly that ions do not have time to arrange themselves into crystals, it forms igneous rocks with a glassy texture. The answer is (B) glassy. To arrive at this answer, you can use your knowledge of how different cooling rates affect the formation of crystals in igneous rocks. In this case, the quick cooling prevents the ions from arranging themselves into crystals, resulting in a glassy texture.
3. Two igneous rocks can have the same minerals but different names due to differences in their textures. The answer is (C) different textures. You can determine this by considering that the texture of an igneous rock refers to the size and arrangement of the mineral grains within it. Even if two igneous rocks have the same minerals, if their textures are different, they may be given different names.
8. A conglomerate is a rock that forms as a result of compaction and cementation. The answer is (B) compaction and cementation. To determine this, you can recall that conglomerate is a type of clastic sedimentary rock composed of rounded fragments that are cemented together by a matrix. This cementation occurs when the fragments are compacted and the spaces between them are filled with a cementing material.
9. The formation of rock gypsum is primarily due to precipitation from a water solution. The answer is (C) precipitation from a water solution. To determine this, you can consider that gypsum is a mineral that forms from the evaporation or precipitation of mineral-rich water. This process leads to the accumulation and crystallization of gypsum, eventually forming rock gypsum.
10. A rock composed of very fine crystalline quartz is called flint. The answer is (D) flint. To determine this, you can recall that flint is a type of sedimentary rock made up mostly of microcrystalline quartz. It is known for its hardness and ability to produce sparks when struck against steel.
11. A clastic sedimentary rock with particles that are 1.5 millimeters in diameter would be classified as a sandstone. The answer is (B) sandstone. To determine this, you can use your knowledge of sedimentary rock classification based on particle size. Sandstone typically consists of sand-sized particles ranging from 0.0625 to 2 millimeters in diameter, making it the most appropriate classification for particles that are 1.5 millimeters in diameter.
12. Sedimentary rocks with ripple marks suggest that they formed along a beach or stream bed. The answer is (A) along a beach or stream bed. You can arrive at this answer by considering that ripple marks are formed by the action of water currents and waves. They are commonly observed in beach or river environments, indicating that the sedimentary rocks with ripple marks likely formed in these settings.
13. When hot magma forces its way into rock, it is an example of contact metamorphism. The answer is (C) contact metamorphism. To determine this, you can recall that contact metamorphism occurs when rock is altered by the heat and pressure from the intrusion of a magma body. In this process, the hot magma comes into contact with the surrounding rock, causing changes in its mineral composition and texture.