Activity 4: True or False
Directions:Write T if the statement is true and F if it is false

1. Temperature increases with depth.
2. The mantle and asthenosphere are considerably cooler than the lithosphere, and the core is much hotter than the mantle.
3. Convention occurs at the mantle, but not between the core and mantle.
4. Radioactive decay is caused by the dintegration of natural radioactive elements
5. in the earth crust about 92% of the elements undergo radioactive decay

Answer:
1. T
2.F
3.T
4.T
5.F​