Half life calculations

Half life calculations

8th Grade

20 Qs

quiz-placeholder

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Half life calculations

Half life calculations

Assessment

Quiz

Physics, Science

8th Grade

Medium

NGSS
HS-PS1-8

Standards-aligned

Created by

Asha Abraham

Used 98+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is Half-life?

The amount of time it takes for some of the nuclei in a sample of the isotope to decay
The amount of time it takes for half the electrons in a sample of the isotope to decay
The amount of time it takes for half the nuclei in a sample of the isotope to decay
the amount of time it takes to double the nuclei in a sample of the isotope to decay

Tags

NGSS.HS-PS1-8

2.

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

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

After 22,800 years, approximately what percentage of the original carbon-14 remains?

15%

12.5%

6.25%

3.125%

Tags

NGSS.HS-PS1-8

4.

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

5.

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

6.

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

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The diagram shows 32 atoms.

16 of the Red are parent isotopes

16 of the Green are daughter isotopes

How many half-lives have occurred?

0

1

2

3

Tags

NGSS.HS-PS1-8

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