Radioactive Isotopes

Radioactive Isotopes

9th Grade

25 Qs

quiz-placeholder

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Radioactive Isotopes

Radioactive Isotopes

Assessment

Quiz

Science

9th Grade

Hard

NGSS
HS-PS1-8

Standards-aligned

Created by

Lisa Thompson

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Radiometric dating is possible because the rates of decay of radioactive isotopes _____.

change over time

change from place to place

are constant

vary widely

Tags

NGSS.HS-PS1-8

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the half-life of a radioactive group of atoms is 100 years, then how old is the rock if there have been two half-lives?

25 years

200 years

400 years

800 years

Tags

NGSS.HS-PS1-8

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

How many grams of Carbon-14 will remain after 17,100 years- C-14 has a half life 5,730 so 17,100 is about 3 half lives?

32 g

16 g

8 g

4 g

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What percentage of Rubidium-87 will remain after 4 half-lives?

25%

12.5%

6.25%

3.125%

Tags

NGSS.HS-PS1-8

5.

MATCH QUESTION

1 min • 1 pt

Media Image

Match the radioactive isotope to its decay product (daughter).

Calcium-40

Rubidium-87

Strontium-87

Carbon-14

Nitrogen-14

Potassium-40

Lead-206

Uranium-238

Tags

NGSS.HS-PS1-8

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the name given to an "unstable" isotope?

radioactive

radioisotopes

photon

electron cloud

Tags

NGSS.HS-PS1-8

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of these describes the use of the carbon-14 isotope?

formed by radioactive decay

cannot beused to date objects

can be used to date objects more than 6,000 years old

can be used to date objects less than 75,000 years old

Tags

NGSS.HS-PS1-8

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