Among the following radioactive parent isotopes, which is likely to be used for specimens less than 75,000 years old?

The part of a glacier where there is a net loss to the glacier is called the _________________.

The type of fossil formed when organisms leave tracks, burrows, or waste is a _______ fossil.

Diagram question. Label the major parts of a wave. 1.  _______ 2. _______ 3. _______ 4. _______

_______ are areas of permeable rock strata or sediments that transmit water flow easily.

The mechanism that operates along the oceanic ridge system, to create new seafloor, is _______

The underlying cause of mass wasting is _______

Which of the follow lava compositions has the greatest amount of viscosity?

Sediment that is composed of particles of minerals and rocks that originate at the continents is ___________________ sediment.

The _______ is the amount of time it takes for half of the remaining parent isotopes to decay into daughter isotopes.