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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
22
D
14
2) Carbon-14 has how many protons?
A
8
B
12
C
14
D
6
3) What charge does a neutron carry?
A
Negative
B
Positive
C
None (neutral)
D
Half
4) In the lab, the M and Ms represent
A
Candy
B
Parent atoms
C
Daughter atoms
D
Decayed atoms
5) In the lab, the split peas represent
A
Vegetables
B
Green M and Ms
C
Undecayed atoms
D
Decayed atoms
6) How many atoms decay in one half life?
A
All, 100%
B
3/4, 75%
C
None, 0%
D
Half, 50%
7) Which isotope did the PHET simulation use?
A
Carbon-14
B
Candium
C
Potassium-40
D
Carbon-12
8) An isotope has a different number of
A
Protons
B
Neutrons
C
Atoms
D
Electrons
9) Decay refers to
A
How old something is
B
The amount of atoms in a sample
C
Creating bigger atoms
D
How radioactive atoms change into stable 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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