Electromagnetic Spectrum Quiz

Which type of electromagnetic wave is used for broadcasting radio and television?

• Radio Waves

• Microwaves

• Infrared Radiation

• Visible Light

Answer explanation

The question asks about the type of electromagnetic wave used for broadcasting radio and television. The correct answer is Radio Waves. Radio Waves are used for broadcasting radio and television signals. They have long wavelengths and low frequencies, allowing them to travel long distances and penetrate buildings. Other options like Microwaves, Infrared Radiation, and Visible Light are not used for broadcasting radio and television signals. Therefore, the correct choice is Radio Waves.

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NGSS.HS-PS4-5

What is the typical wavelength range of microwaves?

• 1mm to 1m

• 700 nm to 1mm

• 400 nm to 700 nm

• 10 nm to 400 nm

Answer explanation

The question asks about the typical wavelength range of microwaves. The correct answer is '1mm to 1m'. Microwaves have wavelengths in this range.

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NGSS.HS-PS4-1

Which type of electromagnetic wave is used for remote controls and thermal imaging?

• Radio Waves

• Microwaves

• Infrared Radiation

• Visible Light

Answer explanation

The question asks about the type of electromagnetic wave used for remote controls and thermal imaging. The correct choice is 'Infrared Radiation'. Infrared radiation is used in remote controls and thermal imaging devices. It falls between microwaves and visible light on the electromagnetic spectrum. Infrared radiation is invisible to the human eye but can be detected by special sensors. It is commonly used for wireless communication and heat detection.

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NGSS.HS-PS4-5

Which part of the electromagnetic spectrum can human eyes detect?

• Radio Waves

• Microwaves

• Infrared Radiation

• Visible Light

Answer explanation

Human eyes can detect visible light. Visible light is a part of the electromagnetic spectrum that includes radio waves, microwaves, and infrared radiation. However, it is important to note that visible light is the only part of the spectrum that human eyes can perceive. This is why we are able to see objects and colors in our surroundings. The other options mentioned, such as radio waves, microwaves, and infrared radiation, are not detectable by human eyes. Therefore, the correct choice is visible light.

What is the typical wavelength range of visible light?

• 1mm to 1m

• 700 nm to 1mm

• 400 nm to 700 nm

• 10 nm to 400 nm

Answer explanation

The question asks about the typical wavelength range of visible light. The correct answer is '400 nm to 700 nm.' This range represents the wavelengths of light that are visible to the human eye. It covers the colors of the rainbow, from violet to red. The other options are incorrect. Option 1, '1mm to 1m,' represents radio waves, not visible light. Option 2, '700 nm to 1mm,' includes infrared light. Option 3, '10 nm to 400 nm,' includes ultraviolet light. Therefore, the correct answer is '400 nm to 700 nm,' which represents the visible light spectrum.

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NGSS.HS-PS4-1

Which type of electromagnetic wave is used for sterilizing equipment and detecting counterfeit banknotes?

• Ultraviolet Radiation

• X-rays

• Gamma Rays

• Visible Light

Answer explanation

Ultraviolet radiation is used for sterilizing equipment and detecting counterfeit banknotes. It is an electromagnetic wave that has a shorter wavelength than visible light. Ultraviolet radiation has the ability to kill bacteria and other microorganisms, making it an effective method for sterilization. Additionally, ultraviolet detectors are used to identify counterfeit banknotes, as genuine banknotes have specific ultraviolet features that can be detected. This makes ultraviolet radiation a valuable tool in maintaining cleanliness and preventing fraud.

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What are the dangers associated with ultraviolet (UV) radiation?

• Can cause skin burns and increase the risk of skin cancer

• Can damage living tissues; exposure should be limited

• Highly penetrating and can damage living cells

• No dangers associated with UV radiation

Answer explanation

UV radiation poses several dangers, including the risk of skin burns and an increased likelihood of developing skin cancer. It can also cause damage to living tissues and cells due to its high penetration. It is important to limit exposure to UV radiation to protect against these harmful effects.

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NGSS.HS-PS4-4

Which type of electromagnetic wave is used for medical imaging and security scanners at airports?

• Ultraviolet Radiation

• X-rays

• Gamma Rays

• Visible Light

Answer explanation

X-rays are the type of electromagnetic wave used for medical imaging and security scanners at airports. They have a shorter wavelength and higher energy than visible light, allowing them to penetrate through the body and create detailed images of bones and tissues. X-rays are able to detect abnormalities and diagnose various medical conditions. In security scanners, X-rays are used to scan luggage and identify any potential threats or prohibited items. Their ability to pass through objects makes them an effective tool for both medical and security purposes.

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NGSS.HS-PS4-5

What are the dangers associated with X-rays?

• Can cause skin burns and increase the risk of skin cancer

• Can damage living tissues; exposure should be limited

• Not penetrating but can damage living cells

• No dangers associated with X-rays

Answer explanation

X-rays are a form of radiation that can be harmful to living tissues. It is important to limit exposure to X-rays as they can damage cells. The correct choice is 'Can damage living tissues; exposure should be limited.'

Which type of electromagnetic wave is used for treating cancer and sterilizing medical equipment?

• Ultraviolet Radiation

• X-rays

• Gamma Rays

• Visible Light

Answer explanation

Gamma Rays are a type of electromagnetic wave that is used for treating cancer and sterilizing medical equipment. They have high energy and can penetrate deep into the body, targeting cancer cells and destroying them. Gamma Rays are more powerful than Ultraviolet Radiation, X-rays, and Visible Light, making them an effective tool in medical treatments. They are able to kill cancer cells while minimizing damage to healthy tissues. Gamma Rays are also used to sterilize medical equipment, ensuring that it is free from harmful bacteria and viruses.

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NGSS.HS-PS4-4