Radiometric Dating & Earth's Layers

A process by which scientists can determine the absolute age of a sample by examining the radioactive isotopes within that sample is called

• RELATIVE dating

• RADIOMETRIC dating

• Great guessing

• Chemical gradiation

An isotope is an element that has either extra or missing

• Protons

• Electrons

• Neutrons

• Dance partners

When an unstable nuclei of an isotope loses energy by radiation it is called

• Radioactive decay

• Fermentation

• Being extra

• Nucleic acid

The amount of time that it takes a sample of unstable nuclei (of a radioactive isotope) to decay by half is called

• Half-life

• Decay interval

• Melting point

• Tummy time

The outermost chemical layer of the Earth is called the

• Mantle

• Lithosphere

• Crust

• Asthenosphere

The mechanical layer of the Earth that is represented by the presence of tectonic plates is the

• Lithosphere

• Crust

• Core

• Mesosphere

Which of the following elements IS NOT present in the core of the Earth?

• Iron

• Nickel

• Silicon

The INNER CORE of the Earth is

• Liquid

• Gaseous

• Solid

• Hollow

Which mechanical layer of the Earth is represented by the flow of liquid metal?

• Mantle

• Inner Core

• Asthenosphere

• Outer Core

The chemical layer of the Earth that is represented by plastic-like, semi-solid rock is the

• Crust

• Mantle

• Core

• Atmosphere