What is the half-life of Caesium-137?

Radioactivity and Exponential Decay

Interactive Video
•
Physics, Chemistry, Science
•
9th - 12th Grade
•
Hard

Amelia Wright
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
15 days
30 days
45 days
60 days
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the unit used to measure the radioactivity of Caesium-137?
Curie
Sievert
Becquerel
Gray
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who is the unit 'becquerel' named after?
Isaac Newton
Marie Curie
Henri Becquerel
Albert Einstein
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the initial amount of Caesium-137 is 8 becquerels, what is the value of constant c?
4
6
8
10
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
After 30 days, what fraction of the initial Caesium-137 remains?
1/5
1/3
1/2
1/4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the approximate value of the constant r rounded to the nearest thousandth?
0.990
1.000
0.950
0.977
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What mathematical operation is used to solve for r in the equation 8 * r^30 = 4?
Multiplication
Addition
Subtraction
Exponentiation
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