Lesson 1 Quiz

Lesson 1 Test Circle and/or fill in the correct answer to the following: 1. Elements with the same atomic numbers but with different atomic weights are called: a. Ions b. Isotopes c. Radioactive d. Elements 2. Manmade isotopes are produced by bombarding an element in a nuclear reactor with: a. Radiation b. Protons c. Electrons d. Neutrons 3. Describe the basic structure of the atom. ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________ ____ 4. All isotopes are radioactive to some degree. a. True b. False 5. Name the different types of radiation. ____________________________________________________________________ ____________________________________________________________________ ____________________________________________________________________

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6. What is the intensity (I2) at 225 feet if the source intensity is 1045.33 R/h at one foot?

r12 I1 = r22 I2 I1 = r12 =

I2 = r22 =