نقاط المكافآت
اكسب نقاطًا من خلال تفاعلك مع المُدرس أثناء الحصة وإجابتك عن الأسئلة، واستخدمها لاحقًا للحصول على خصم عند شراء حصص أخرى.
Lesson Plan: Calculating the Activity of a Radioactive Source Physics
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to calculate the activity of a radioactive sample after a given amount of time using the sample’s half-life.
Objectives
Students will be able to
- understand that the activity of a radioactive sample decreases by equal factors over equal periods of time,
- define the half-life of a radioactive sample as the time it takes for the activity to reduce by half,
- work out the activity of a sample after a given number of half-lives has passed given the initial activity and vice versa,
- work out the number or proportion of radioactive atoms in a sample after a given number of half-lives has passed given the initial number or proportion of radioactive atoms in the sample and vice versa,
- work out the half-life of a sample from a graph of activity over time or tabular data of activity over time.
Prerequisites
Students should already be familiar with
- alpha, beta, and gamma radiation,
- becquerels,
- reading graphs.
Exclusions
Students will not cover
- using ,
- calculation of the attenuation of radiation through a material,
- any other type of radiation, such as neutron radiation or positron radiation,
- any other type of decay process.
