Exploring Electromagnetic Waves

What type of wave does not require a medium to travel?

• Sound waves

• Mechanical waves

• Water waves

• Electromagnetic waves

What is the typical wavelength range for radio waves?

• 100 to 1000 nanometers

• 1 meter to 2 kilometers

• 1 to 10 centimeters

• 10 to 100 meters

Which device is known to use microwaves for its operation?

• Television

• Laser pointer

• Microwave oven

• Radio

What is a common use of infrared technology?

• Remote controls

• X-ray imaging

• Sterilizing equipment

• Cooking food

Which type of electromagnetic wave is used in tanning beds?

• Infrared light

• Gamma rays

• Ultraviolet light

• Microwaves

What is the primary danger associated with ultraviolet light?

• Radio interference

• Food spoilage

• Sunburn and skin cancer

• Cataracts

What medical application do X-rays have?

• Treating cancer

• Imaging internal body structures

• Sterilizing medical equipment

• Improving cell growth

What is a significant risk associated with gamma rays?

• DNA mutations leading to cancer

• Skin burns

• Eye strain

• Muscle growth

Which material is commonly used to shield against gamma radiation?

• Lead

• Wood

• Glass

• Plastic

What property of electromagnetic waves increases as the wavelength decreases?

• Speed

• Frequency

• Transparency

• Flexibility