consider the table below that summarizes the types of materials that can block the 3 different types of…
consider the table below that summarizes the types of materials that can block the 3 different types of radiation.\n| material | 1 | 2 | 3 |\n|--|--|--|--|--|\n| lead | stopped | stopped | stopped |\n| cloth | not stopped | stopped | stopped |\n| aluminum foil | not stopped | stopped | stopped |\n| wood | not stopped | stopped | stopped |\n| paper | not stopped | stopped | not stopped |\n| thick concrete | stopped | stopped | stopped |\nbased on the table, at which numbered spot in the table does each type of radiation belong?\no 1 = beta; 2 = alpha, 3 = gamma\no 1 = alpha; 2 = beta, 3 = gamma\no 1 = beta; 2 = gamma, 3 = alpha\no 1 = gamma; 2 = alpha, 3 = beta
Answer
Explanation:
Step1: Recall radiation - blocking properties
Alpha radiation is the least penetrating and can be stopped by a sheet of paper or a few centimeters of air. Beta radiation is more penetrating than alpha and can be stopped by a few millimeters of aluminum. Gamma radiation is the most penetrating and requires thick materials like lead or thick concrete to be stopped.
Step2: Analyze the table
Looking at the table, radiation 1 is only stopped by lead and thick concrete, so it must be the most penetrating - gamma radiation. Radiation 2 is stopped by cloth, aluminum foil, wood and paper in addition to lead and thick concrete, so it is alpha radiation as it is least penetrating among the three. Radiation 3 is stopped by aluminum foil etc. but not by paper, so it is beta radiation.
Answer:
1 = gamma; 2 = alpha, 3 = beta