Question

1. ______ layer above the mantle

a) mesosphere
b) mantle
c) asthenosphere
d) inner core
e) crust

1. ______ considered the center of the earth
2. ______ layer under the asthenosphere
3. ______ area between the crust and the outer core
4. ______ area of ooey gooey material
5. the mechanism that moved the land masses was very well explained by alfred wegener

a) true
b) false

1. what happened in 1930?

a) beginning of world war ii
b) death of wegener
c) acceptance of wegener’s theory
d) birth of wegener

1. nickel and iron are the major components of the following layer.

a) mesosphere
b) inner core
c) continental crust
d) oceanic crust

1. which of the following layers has extreme heat?

a) inner core
b) crust
c) outer core
d) mantle

1. how many layers make up the mantle?

a) 5
b) 4
c) 3
d) 2

1. which of the following layers contain the highest amount of pressure?

a) mantle
b) outer core
c) inner core
d) crust

Explanation:

1. The crust is the outermost layer, directly above the mantle.
2. The inner core is Earth's central, innermost layer.
3. The mesosphere (lower mantle) lies beneath the asthenosphere.
4. The mantle occupies the region between the crust and outer core.
5. The asthenosphere is the ductile, "gooey" upper mantle layer.
6. Alfred Wegener proposed continental drift but failed to explain the mechanism of land movement.
7. Alfred Wegener died in 1930 during an expedition in Greenland.
8. The inner core is primarily composed of nickel and iron.
9. The inner core has the highest temperature of all Earth's layers due to extreme pressure and radioactive decay.
10. The mantle is divided into two main layers: the upper mantle (including asthenosphere) and lower mantle (mesosphere).
11. Pressure increases with depth, so the inner core has the highest pressure of all Earth's layers.

Answer:

1. e) crust
2. d) inner core
3. a) mesosphere
4. b) mantle
5. c) asthenosphere
6. b) False
7. b) Death of Wegener
8. b) inner core
9. a) inner core
10. d) 2
11. c) inner core