Planets were formed through ________ as rock and particles adhered together. 2. ________ forms when wind...

1. Planets were formed through ________ as rock and particles adhered together.
2. ________ forms when wind and water wear away parts of rocks.
3. ________ is the transfer of heat as a fluid moves.
4. Scientists use ________ to determine a rock layer's age compared to the age of other layers.
5. The ________ consists of the lower mantle and part of the upper mantle.
6. The ________ part of Earth's upper mantle, has a pliable texture.
7. When ________ move, earthquakes may happen or volcanoes may erupt.
8. A ________ like quartz, consists of one element or one compound.
9. Earth's innermost layer, the ________ is as hot as the surface of the sun.