Set49L1
Set49L1 The Structure ot Earth (Geoloay=
20160423L1-2023.10.25S2L1-2023.11.29S1L1=2024.3.23=2024.7.21
1. What does the professor mainly discuss?
A. The physical characteristics of Earth’s crust
B. The chemical composition of Earth’s core
C. Efforts to study condtitions in Earth’s interior
D. Recently discovered similnnities betweon Earth’s crust and interior
2. What does the professor imply about the traditional model of Earth’s layers?
A. It is based on complex structures that may not reaily exist
B.It is an oversimplification of Earth’s actual structure
C. it has been supported by recent laboratory experiments
D. It is being misinterpreted by many researchers.
3. Why does the professor discuss an experiment with water?
A. To show how liquids chanoe when they are heated
B. To demonstrate that water is an unusual substance
C. To point out a disadvantage of relying on high-pressure physics
D. To illustrate an interesting finding from hioh-pressure physics
4.What does the professor say about a diamond-anvil cell?
A. It heats substances by compressing them.
B. It concentrates pressure in a small area.
C. It creates powerful electromagnetic field
D. It is used for drilling deep underoround.
5. What does the professor imply about a very dense mineral detected deep in Earth’s mantle?
A. It has the same structure as a crystal created in the laboratory .
B. Its molecular structure frequently changes
C. It is probably harder than a diamond.
D. It will be extracted from deep mines someday.
6. What does the professor say geologists were able to determine in 2007？
A. The range of temperatures present on Earth’s crust
B. The speed at which seismic waves travel in Earth’s mant
C: The distance between Earth’s surface and core
D. The temperature of Earth’s core-mantle boundary
