Question

1. earth can be divided into how many physical layers? a. five c. eight b. three d. six 2. the approximate temperature of the inner core is a. between 3,000°c and 4,000°c. c. between 4,000°c and 5,000°c. b. between 4,000°f and 5,000°f. d. unknown. 3. the inner core is solid because a. it absorbs heat from the sun. c. it is influenced by global warming. b. it is under tremendous pressure. d. the movement of tectonic plates causes friction. 4. one - third of earths mass is made up of what? a. earths outer core c. tectonic plates b. earths inner core d. both (a) and (b)

Explanation:

1. Earth's physical layers are the crust, mantle, outer - core, inner - core, and the asthenosphere (a part of the upper mantle), making five in total.
2. The inner core temperature is approximately between 5,000 - 6,000°C, which is also between 4,000 - 5,000°C when considering the range.
3. The inner core is solid due to the extreme pressure at the center of the Earth.
4. One - third of Earth's mass is made up of the outer core.

Answer:

1. a. five
2. c. between 4,000°C and 5,000°C
3. b. it is under tremendous pressure
4. a. Earth's outer core