P7

Question 1

What is the symbol for Aplha radiation?

Answer 1

a

Question 2

What is the symbol for Beta radiation?

Answer 2

B

Question 3

What is the symbol for Gamma radiation?

Answer 3

Y

Question 4

Which of the three types of radiation are particles?

Answer 4

Alpha and Beta

Question 5

Which of the three types of radiation are waves?

Answer 5

Gamma

Question 6

What is Aplha radiation made of?

Answer 6

Two protons and two neutrons

Question 7

What is Beta made of?

Answer 7

Fast moving electron

Question 8

What is Gamma made of?

Answer 8

High frequency electromagnetic wave

Question 9

What is the relative atomic mass of Aplha, Beta, and Gamma radiation?

Answer 9

Alpha : 4
Beta : 1/2000
Gamma : 0

Question 10

What is the relative atomic charge of Alpha, Beta, and Gamma radiation?

Answer 10

Alpha : +2
Beta : -1
Gamma : 0

Question 11

What is the range in air of Alpha, Beta, and Gamma radiation?

Answer 11

Alpha : 5cm
Beta : 1m
Gamma : Unlimited

Question 12

What is Alpha radiation stopped by?

Answer 12

Thin paper

Question 13

What is Beta radiation stopped by?

Answer 13

Few mm of Aluminium

Question 14

What is Gamma radiation stopped by?

Answer 14

Few centimetres of lead or 1m thick concrete

Question 15

What is the ionising ability of Alpha, Beta, and Gamma radiation?

Answer 15

Alpha : High
Beta : Medium
Gamma : Low

Question 16

Define ionizing radiation.

Answer 16

Radiation that carries enough energy to remove tightly bound electrons from atoms.

Question 17

True or false: Alpha particles can penetrate skin.

Answer 17

FALSE

Alpha particles cannot penetrate the outer layer of skin but can be harmful if ingested.

Question 18

Fill in the blank: Gamma rays are a type of _______ radiation.

Answer 18

electromagnetic

Question 19

What is a common use of radiation in medicine?

Answer 19

Radiation is used for cancer treatment through radiation therapy.

Question 20

Define radiography.

Answer 20

A technique using X-rays to view the internal structure of objects, especially in medicine.

Question 21

What is the purpose of radiation therapy?

Answer 21

To kill cancer cells or shrink tumors using high doses of radiation.

Question 22

True or false: Beta particles are more penetrating than alpha particles.

Answer 22

TRUE

Beta particles can penetrate skin but are stopped by materials like plastic.

Question 23

Fill in the blank: Nuclear medicine uses _______ to diagnose and treat diseases.

Answer 23

radioactive isotopes

Question 24

What is the role of radiation in sterilization?

Answer 24

Radiation is used to kill bacteria and pathogens in medical equipment.

Question 25

True or false: **X-rays** are a form of ionizing radiation.

Answer 25

TRUE ## Footnote X-rays can cause damage to living tissue and are used in medical imaging.

Question 26

What is the use of **radiation** in smoke detectors?

Answer 26

Radiation is used to detect smoke particles through ionization.

Question 27

Define **radiation dose**.

Answer 27

The amount of radiation energy absorbed by an object or person.

Question 28

What is the purpose of **radiation shielding**?

Answer 28

To protect people from harmful effects of radiation exposure.

Question 29

True or false: **Cosmic radiation** comes from the sun and outer space.

Answer 29

TRUE ## Footnote Cosmic radiation contributes to background radiation levels on Earth.

Question 30

Fill in the blank: **Thermal neutrons** are used in _______ reactors.

Answer 30

nuclear

Question 31

What is a common application of **radiation** in industry?

Answer 31

Radiation is used for non-destructive testing of materials and structures.

Question 32

Define **radiation therapy**.

Answer 32

A medical treatment that uses high-energy radiation to kill or damage cancer cells.

Question 33

What is the function of **radiotracers**?

Answer 33

To track the movement of substances in the body during medical imaging.

Question 34

True or false: **Neutron radiation** is less penetrating than alpha radiation.

Answer 34

FALSE ## Footnote Neutron radiation can penetrate materials more effectively than alpha particles.

Question 35

Fill in the blank: **Positron emission tomography** (PET) uses _______ for imaging.

Answer 35

radiotracers

Question 36

What is the main risk associated with **radiation exposure**?

Answer 36

Increased risk of cancer and other health issues due to cell damage.

Question 37

Define **radiation safety**.

Answer 37

Practices and measures to protect people from harmful effects of radiation.

Question 38

What is the purpose of **dosimetry**?

Answer 38

To measure and assess radiation exposure levels for safety and health.

Question 39

True or false: **Radiation** can be used for both diagnosis and treatment.

Answer 39

TRUE ## Footnote Radiation plays a dual role in medical applications.