Why is sunlight exposure considered to be one of the most common ways for people to encounter ionizing electromagnetic radiation?(1 point)
Responses
Sunlight is very high-energy radiation.
Sunlight is very high-energy radiation.
Sunlight is the only energy absorbed easily by the skin.
Sunlight is the only energy absorbed easily by the skin.
Sunlight radiation reacts to chemicals in all types of skin.
Sunlight radiation reacts to chemicals in all types of skin.
Sunlight is the source of ultraviolet radiation.
Sunlight is the source of ultraviolet radiation.
Why are sunscreens considered effective in preventing damage from skin due to ionizing forms of electromagnetic radiation?(1 point)
Responses
They combine ingredients that block ultraviolet radiation.
They combine ingredients that block ultraviolet radiation.
They have active ingredients that absorb all ultraviolet radiation.
They have active ingredients that absorb all ultraviolet radiation.
They provide a layer of chemicals with a higher energy than ultraviolet light.
They provide a layer of chemicals with a higher energy than ultraviolet light.
They emit chemicals that naturally dissipate ionizing forms of waves.
They combine ingredients that block ultraviolet radiation.
Ionizing forms of energy such as X-rays develop images of internal structures such as bones and lungs. Which of the following statements correctly describes how X-rays work?(1 point)
Responses
X-rays measure the amount of energy absorbed by an object.
X-rays measure the amount of energy absorbed by an object.
X-rays target bones and lungs only where energy is most absorbed.
X-rays target bones and lungs only where energy is most absorbed.
X-rays penetrate the body where images are reflected as shadows on a detector.
X-rays penetrate the body where images are reflected as shadows on a detector.
X-rays release high-intensity ionizing energy equivalent to gamma rays.
X-rays penetrate the body where images are reflected as shadows on a detector.
What makes gamma rays an effective tool for eliminating cancerous tumors?(1 point)
Responses
They destroy cells deep within the targeted tissues.
They destroy cells deep within the targeted tissues.
They are non-ionizing energy that is safe for cancer procedures.
They are non-ionizing energy that is safe for cancer procedures.
They are a low-frequency type of energy.
They are a low-frequency type of energy.
They rearrange the electric charges in the atoms.
They destroy cells deep within the targeted tissues.
You read about a type of electromagnetic radiation (EMR) that is unfamiliar to you and immediately suspect it is ionizing. Which of the following statements is most likely the evidence you encountered?(1 point)
Responses
The EMR is considered a type of microwave radiation.
The EMR is considered a type of microwave radiation.
The wavelengths of the EMR are greater than those of most radio waves.
The wavelengths of the EMR are greater than those of most radio waves.
The sun is the source of the EMR.
The sun is the source of the EMR.
The wave frequencies of the EMR are much higher than those of visible light.
The wave frequencies of the EMR are much higher than those of visible light.