Penetrating Ability of EM Radiation (Grade 10 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What is the relationship between frequency and penetrating ability of EM radiation?
What is the relationship between frequency and penetrating ability of EM radiation?
Higher frequency = greater penetration
Which types of EM radiation are classified as ionising radiation?
Which types of EM radiation are classified as ionising radiation?
UV, X-rays, and gamma rays
What distinguishes UVA radiation from UVB radiation?
What distinguishes UVA radiation from UVB radiation?
UVA does not cause sunburn
What does SPF (Sun Protection Factor) specifically indicate protection against?
What does SPF (Sun Protection Factor) specifically indicate protection against?
UVB radiation
What is the body's natural defence mechanism against UV radiation?
What is the body's natural defence mechanism against UV radiation?
Releasing melanin through tanning
Which sunscreen compound provides specific protection against UVA radiation?
Which sunscreen compound provides specific protection against UVA radiation?
Avobenzone
Why are X-rays valuable for medical imaging?
Why are X-rays valuable for medical imaging?
They pass through skin and soft tissue
What is the most significant biological damage caused by gamma-rays?
What is the most significant biological damage caused by gamma-rays?
DNA double-strand breaks
Which safety recommendation reduces mobile phone radiation exposure to the head?
Which safety recommendation reduces mobile phone radiation exposure to the head?
Use hands-free devices
Which lens material provides better UV blocking for eye protection?
Which lens material provides better UV blocking for eye protection?
Plastic, especially polycarbonate