Focus On Life Science: California Grade 7

Lesson 1: Relative Ages of Rocks

Standards Check

1.
The rock cycle suggests that __________. 4.c
A)rocks always stay in the same form
B)rocks are always being added to Earth's mass
C)rocks disappear from Earth as they go underground
D)rocks are continually recycled into different forms
2.
Sedimentary rocks __________. 4.c
A)often form in layers
B)form when sediment is pressed together
C)form from existing rocks
D)all of the above
3.
Surface processes that work to break down rock are called__________. 4.c
A)erosion
B)weathering
C)oxidation
D)ice wedging
4.
How do chemical and physical weathering differ? 4.c
A)Physical weathering occurs when rocks are broken by physical processes, and chemical weathering happens when chemical reactions dissolve minerals.
B)Physical and chemical weathering can happen with the help of animals.
C)Chemical weathering can occur with the help of water reacting with carbon dioxide, and water has nothing to do with physical weathering.
D)Plant roots can help physical weathering occur, but have no impact on soil when it comes to chemical weathering.
5.
Melted rock cools to form __________ rocks. 4.c
A)metamorphic
B)igneous
C)sedimentary
D)mineral
6.
__________ rocks are formed by heating and squeezing existing rocks. 4.c
A)Igneous
B)Metamorphic
C)Sedimentary
D)Detrital
7.
Foliated rocks are composed of __________. 4.c
A)large grained particles
B)organic remains
C)evaporated chemicals
D)distinct layers or bands
8.
How is sediment transformed into rock? 4.c
A)Cementation occurs.
B)Compaction occurs.
C)Compaction and cementation occur.
D)Compaction and carbonization occurs.
9.
What is the principle of superposition? 4.c
A)that younger and some older things are on the bottom, and most older ones closer to the top
B)that younger things are on the bottom, and older ones are closer to the top
C)that older and some younger things are on the bottom, and most younger ones closer to the top
D)that older things are on the bottom, and younger ones are closer to the top
10.
The relative age of something is __________. 4.a
A)its age since it died
B)its age in relation to Earth
C)its age since it was discovered
D)its age in comparison to other things
11.
What principle did James Hutton use to determine that Earth was much older than a few thousand years old? 4.a
A)disconformitarianism
B)conformitarianism
C)uniformitarianism
D)superposition
Grade 7
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