SC15.PS.6

Science (2015) Grade(s): 09-12 - Physical Science

SC15.PS.6
Develop models to illustrate the concept of half-life for radioactive decay.

Unpacked Content

Scientific and Engineering Practices

Developing and Using Models; Engaging in Argument from Evidence; Obtaining, Evaluating, and Communicating Information

Crosscutting Concepts

Systems and System Models; Energy and Matter

Knowledge

Students know:

The atom is made of protons, neutrons, electrons.
The types of radioactive decay include alpha, beta, and gamma.

Skills

Students are able to:

Exemplify the radioactive decay of unstable nuclei using the concept of half-life.
Perform simple half-life calculations based on an isotope's half-life value, time of decay, and/or amount of substance.
Cite specific textual evidence to support analysis of science and technical texts attending to the precise details of explanations or descriptions.
Determine the central ideas or conclusions of a text; trace the explanation or depiction of a complex process, phenomenon, or concept; provide an accurate summary of the text distinct from prior knowledge or opinions.
Engage in argument from evidence.
Communicate information.

Understanding

Students understand that:

Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy.
Half-life can be used to date the age of organic objects.

Vocabulary

Atom
Isotopes
Protons
Neutrons
Electrons
Radioactivity
Half-life
Radioactive decay
Alpha particles
Beta particles
Positrons
Gamma
Fission
Fusion
Kinetic energy
Electromagnetic radiation
Emission
Nuclear power
Hydroelectric power
Solar power
Wind power
Penetrability
Fossil fuel combustion
Decay series

Aligned Learning Resources

Radioactive Decay of Carbon-14

Radioactive List Group Label

Radioactive Half-Life

Design by Adaptive Theme