Radiation Quantities/Units

Question 1

Old Unit for Radioactivity

Answer 1

Currie (Ci)

Question 2

New Unit (SI) for Radioactivity

Answer 2

Bequerel (Bq)

Question 3

Old unit for Exposure

Answer 3

Reontgen (R)

Question 4

New unit (SI) unit for Exposure

Answer 4

Coulombs/kg (C/kg)

Question 5

Old unit for Absorbed Dose

Answer 5

rad

Question 6

New unit (SI) for Absorbed Dose

Answer 6

Gray (Gy)

Question 7

Old unit for Dose Equivalent

Answer 7

rem

Question 8

New unit (SI) for Dose Equivalent

Answer 8

Sievert (Sv)

Question 9

How many Bq are in 1 Ci

Answer 9

1 Ci = 3.73 x 10^10 Bq

Question 10

How many Ci are in 1 Bq

Answer 10

1 Bq = 2.7 x 10^-11 Ci

Question 11

1 R equals how many C/kg

Answer 11

1 R = 2.58 x 10^-4 C/kg

Question 12

1 C/kg equals how many R

Answer 12

1 C/kg = 3.88 x 10^3 R

Question 13

100 rad equals how many Gy

Answer 13

100 rad = 1 Gy

Question 14

1 rad equals how many Gy

Answer 14

1 rad = 0.01 Gy

Question 15

100 rad equals how many cGy

Answer 15

100 rad = 100 cGy

Question 16

How is rem calculated

Answer 16

rem = QF x rad

Question 17

100 rem equals how many Sv

Answer 17

100 rem = 1 Sv

Question 18

How is Sv calculated

Answer 18

1 Sv = QF x Gy

Question 19

What exposure(s) have a QF of 1

Answer 19

e’, x-ray, gamma, beta

Question 20

What exposure(s) have a QF of 5

Answer 20

thermal neutrons

Question 21

What exposure(s) have a QF of 10

Answer 21

protons

Question 22

What exposure(s) have a QF of 20

Answer 22

fast neutrons, & alpha particles