Alpha, Beta, Gamma

Question 1

What type of radiation is composed of two protons and two neutrons?

Answer 1

Alpha radiation

Question 2

Which type of radiation can be stopped by paper?

Answer 2

Alpha radiation

Question 3

What is the charge of an alpha particle?

Answer 3

Positive charge

Question 4

Which type of radiation is made up of high-energy electrons?

Answer 4

Beta radiation

Question 5

True or False: Beta particles can penetrate paper but are stopped by aluminum.

Answer 5

True

Question 6

What is the charge of a beta particle?

Answer 6

Negative charge

Question 7

Fill in the blank: Gamma radiation is a form of __________ energy.

Answer 7

Electromagnetic

Question 8

Which type of radiation is the most penetrating?

Answer 8

Gamma radiation

Question 9

True or False: Gamma radiation has mass.

Answer 9

False

Question 10

What is radioactivity?

Answer 10

The process by which unstable atomic nuclei lose energy by emitting radiation.

Question 11

What is a half-life?

Answer 11

The time taken for half the atoms in a radioactive substance to decay.

Question 12

If a sample has a half-life of 5 years, how much of a 100g sample remains after 15 years?

Answer 12

12.5g

Question 13

True or False: After one half-life, 75% of the original radioactive substance remains.

Answer 13

False

Question 14

What does the term ‘nuclear decay’ refer to?

Answer 14

The process by which an unstable atomic nucleus loses energy by radiation.

Question 15

Which particle is emitted during alpha decay?

Answer 15

Alpha particle

Question 16

What is the result of beta decay?

Answer 16

A neutron is converted into a proton, emitting a beta particle.

Question 17

Fill in the blank: Gamma rays are emitted during __________ changes in the nucleus.

Answer 17

Energy

Question 18

What is the effect of radiation on living tissue?

Answer 18

It can cause damage to cells and DNA.

Question 19

Multiple choice: Which of the following is NOT a type of radiation? A) Alpha B) Beta C) Delta D) Gamma

Answer 19

C) Delta

Question 20

What is the main use of gamma radiation in medicine?

Answer 20

To kill cancer cells.

Question 21

True or False: Alpha particles travel faster than beta particles.

Answer 21

False

Question 22

What is a common application of beta radiation?

Answer 22

Used in smoke detectors.

Question 23

Fill in the blank: The decay of a radioactive isotope is __________.

Answer 23

Random

Question 24

What is the main safety concern with radiation exposure?

Answer 24

Increased risk of cancer.

Question 25

True or False: All radioactive materials emit gamma radiation.

Answer 25

True

Question 26

What is the unit of measurement for radioactivity?

Answer 26

Becquerel (Bq)

Question 27

What does the term 'radiocarbon dating' refer to?

Answer 27

A method used to determine the age of organic materials using carbon-14.

Question 28

Fill in the blank: The process of __________ involves using radiation to sterilize medical equipment.

Answer 28

Radiation

Question 29

What is the principle behind a Geiger counter?

Answer 29

It detects ionizing radiation.

Question 30

Which type of particle is emitted during positron emission?

Answer 30

Positron

Question 31

What happens to the atomic number of an element when it undergoes alpha decay?

Answer 31

It decreases by 2.

Question 32

True or False: Radioactive decay rates are influenced by external conditions.

Answer 32

False

Question 33

What is the purpose of a radiation shield?

Answer 33

To protect against harmful effects of radiation.

Question 34

What type of radiation is used in PET scans?

Answer 34

Positron emission

Question 35

Fill in the blank: __________ is the term for the time taken for a radioactive substance to decay to half its initial amount.

Answer 35

Half-life

Question 36

What is the main difference between fission and fusion?

Answer 36

Fission splits nuclei; fusion combines them.

Question 37

What is the significance of the decay constant?

Answer 37

It describes the probability of decay per unit time.

Question 38

True or False: All isotopes of an element are radioactive.

Answer 38

False

Question 39

What is a decay chain?

Answer 39

A series of decays that a radioactive isotope undergoes until a stable isotope is formed.