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Half-Life

Authored by Bob Baker

Physics

8th - 11th Grade

NGSS covered

Used 12+ times

Half-Life
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13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

After the third half-life, how much of the sample is left?

1/2
1/3
1/16
1/8

Tags

NGSS.HS-PS1-8

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of iodine-131 is 8 days.

1.25mg
1.25g
10g
10mg

Tags

CCSS.HSF.LE.A.4

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?

3.0g
0.25mg
0.3g
0.25g

Tags

CCSS.HSF.LE.A.4

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

What is the half-life of iodine-131?

32 days
8 days
16 days
24 days

Tags

NGSS.HS-PS1-8

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The % of the parent isotope remaining after 1 Half Life.

50%

25%

12.5%

6.25%

Tags

NGSS.HS-PS1-8

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The % of the parent isotope remaining after 2 Half Lives.

50%

25%

12.5%

6.25%

Tags

NGSS.HS-PS1-8

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The diagram shows 32 atoms

32 of the Red are the parent isotope

0 of the atoms are daughter isotopes

How many half-lives have occurred?

0

1

2

3

Tags

NGSS.HS-PS1-8

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