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Absolute Dating
Test Description: Using lab knowledge to learn about absolute and radioactive dating.
Instructions: Answer all questions to get your test result.
1) In total there are 50 total atoms. If there are 36 undecayed atoms, how many decayed atoms are present?
A
36
B
50
C
14
D
22
2) Carbon-14 has how many protons?
A
14
B
8
C
6
D
12
3) What charge does a neutron carry?
A
Half
B
None (neutral)
C
Negative
D
Positive
4) In the lab, the M and Ms represent
A
Daughter atoms
B
Candy
C
Parent atoms
D
Decayed atoms
5) In the lab, the split peas represent
A
Green M and Ms
B
Decayed atoms
C
Vegetables
D
Undecayed atoms
6) How many atoms decay in one half life?
A
3/4, 75%
B
Half, 50%
C
All, 100%
D
None, 0%
7) Which isotope did the PHET simulation use?
A
Carbon-12
B
Potassium-40
C
Candium
D
Carbon-14
8) An isotope has a different number of
A
Protons
B
Atoms
C
Neutrons
D
Electrons
9) Decay refers to
A
How radioactive atoms change into stable atoms
B
How old something is
C
The amount of atoms in a sample
D
Creating bigger atoms
10) After two half lives, what percentage of parent atoms remain?
A
0%
B
25%
C
12.%
D
50%
*select an answer for all questions
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