Radioactivity
Name: ______________________ Date: ____________
B
W
C
A
R
B
O
N
D
A
T
I
N
G
D
S
D
M
A
P
A
P
E
R
S
T
K
E
E
A
T
I
E
P
F
H
C
O
Q
U
M
X
T
K
W
B
A
S
R
G
R
A
G
A
K
U
Q
M
H
L
E
A
D
E
Y
A
A
A
Z
C
E
L
G
K
I
M
D
T
R
F
N
T
Y
V
C
B
R
E
I
F
R
V
D
C
N
N
I
K
K
A
F
D
E
G
M
O
G
L
O
Z
Q
G
C
V
L
I
F
N
X
Y
R
K
W
O
E
I
U
B
W
P
D
O
I
G
F
O
T
W
R
A
J
M
R
F
N
U
C
L
E
U
S
G
O
A
L
P
H
A
R
Q
C
E
D
F
V
C
D
D
I
H
I
A
M
V
U
R
C
H
O
Q
F
B
R
X
Q
H
N
G
L
V
N
A
F
O
U
Q
U
I
G
A
M
M
A
B
G
L
S
S
Z
I
O
C
E
W
N
C
S
M
O
K
E
D
E
T
E
C
T
O
R
K
N
R
T
A
F
C
A
T
O
M
A
A
M
D
D
R
W
S
G
A
E
N
T
U
R
V
H
S
H
M
D
S
O
T
F
S
Z
H
R
C
Q
R
T
O
M
X
C
W
J
P
F
S
I
F
G
D
W
E
H
I
C
A
U
Q
D
E
C
A
Y
Y
F
B
X
V
J
R
B
E
C
Q
U
E
R
E
L
B
U
I
L
D
I
N
G
S
- alpha
- atom
- background
- becquerel
- beta
- buildings
- cancer
- carbon dating
- curie
- decay
- foil
- gamma
- geiger counter
- half life
- lead
- nucleus
- paper
- rocks
- smoke detector
- space
- sterilising
- tracer