Question 1

Which type of electromagnetic wave has the longest wavelength?

Accepted Answer

Radio waves

Answer

Visible light

Answer

Microwaves

Answer

Infrared

Question 2

Which type of electromagnetic wave can penetrate the ionosphere?

Accepted Answer

Microwaves

Answer

Visible light

Answer

Infrared waves

Answer

Radio waves

Question 3

Which type of electromagnetic wave lies beyond the red end of the visible spectrum?

Accepted Answer

Infrared waves

Answer

Radio waves

Answer

Microwaves

Answer

Visible light

Question 4

What makes up only a small portion of the entire electromagnetic spectrum?

Accepted Answer

Visible light

Answer

X-rays

Answer

Ultraviolet waves

Answer

Infrared waves

Question 5

What has the shortest wavelength among visible light?

Accepted Answer

Violet

Answer

Green

Answer

Red

Answer

Yellow

Question 6

Which type of electromagnetic wave has a shorter wavelength than violet light?

Accepted Answer

Ultraviolet waves

Answer

Infrared waves

Answer

X-rays

Answer

Visible light

Question 7

What type of electromagnetic wave is used in X-ray photography to help doctors look inside the body?

Accepted Answer

X-rays

Answer

Microwaves

Answer

Radio waves

Answer

Infrared waves

Question 8

What type of electromagnetic wave is produced from nuclear reactions and is more dangerous than X-rays?

Accepted Answer

Gamma rays

Answer

Ultraviolet waves

Answer

Infrared waves

Answer

Visible light

Question 9

Which type of electromagnetic wave has photons of high energies?

Accepted Answer

Gamma rays

Answer

Microwaves

Answer

Radio waves

Answer

Visible light

Question 10

Which type of electromagnetic wave can be compared to the size of a football field in terms of wavelength?

Accepted Answer

Radio waves

Answer

X-rays

Answer

Infrared waves

Answer

Ultraviolet waves

Question 11

Which type of electromagnetic wave is used to transmit signals in radio communication and broadcasting?

Accepted Answer

Radio wave

Answer

Microwave

Answer

Visible light

Answer

Infrared ray

Question 12

What is the purpose of a modulator in radio wave transmission?

Accepted Answer

To transform audio-frequency signals and frequency carrier waves into appropriate modulated carrier waves

Answer

To amplify the modulated carrier wave

Answer

To generate radio-frequency carrier waves

Answer

To select the frequency of the desired station

Question 13

What is the main application of microwaves in satellite communication?

Accepted Answer

Transmitting signals overseas

Answer

Generating radio waves

Answer

Detecting objects within a range

Answer

Amplifying signals from the satellite

Question 14

What is the purpose of RADAR?

Accepted Answer

To locate, track, recognize, or detect objects within a range

Answer

To transmit microwaves to cell sites

Answer

To cook or heat food

Answer

To transmit signals to a satellite

Question 15

What is the main use of fiber optics in communication?

Accepted Answer

Transmitting signals over long distances at very high speeds

Answer

Producing heat to cook or heat food

Answer

Taking infrared photographs of the Earth's surface

Answer

Acting as a receptor for radio waves

Question 16

What is the function of an infrared remote control?

Accepted Answer

Controlling electronic appliances

Answer

Showing temperature variations of the body

Answer

Calculating the distance of an object for autofocus cameras

Answer

Providing details of vegetation on the Earth's surface

Question 17

What is one of the benefits of ultraviolet rays?

Accepted Answer

It helps our body to produce vitamin D which is essential in our body’s calcium absorption.

Answer

It can lead to skin cancer.

Answer

It is used to disinfect toilets in Japan.

Answer

It accelerates the aging process of our skin.

Question 18

What can be determined using UV lamps?

Accepted Answer

Fake banknotes and money bills

Answer

The authenticity of water filters

Answer

The cleanliness of drinking water

Answer

Fake signatures on passbooks

Question 19

What is one use of ultraviolet rays in Japan?

Accepted Answer

To disinfect toilets

Answer

To make clothes look whiter in sunlight

Answer

To check the authenticity of money bills

Answer

To sterilize drinking water

Question 20

What can long wavelength X-rays penetrate?

Accepted Answer

Flesh but not bones

Answer

Bones but not flesh

Answer

Water but not air

Answer

Metals but not wood

Question 21

What is one useful application of short wavelength X-rays?

Accepted Answer

Inspecting welded joints for faults

Answer

Diagnosing bone fractures

Answer

Looking inside the body

Answer

Sterilizing drinking water

Question 22

Why should frequent exposure to X-rays be avoided?

Accepted Answer

It can damage healthy living cells of the body and cause cancer.

Answer

It accelerates the aging process of the skin.

Answer

It leads to bone fractures and tumors.

Answer

It can kill living cells and treat cancer.

Question 23

What is one use of gamma rays in treating cancer?

Accepted Answer

Radiotherapy

Answer

Checking the authenticity of banknotes

Answer

Diagnosing bone fractures

Answer

Sterilizing drinking water

Question 24

What can gamma rays do to living cells?

Accepted Answer

Kill them

Answer

Stimulate their growth

Answer

Disinfect them

Answer

Repair them

Question 25

In what industry are gamma rays used to sterilize drinking water?

Accepted Answer

Water treatment

Answer

Transportation

Answer

Manufacturing

Answer

Energy production

Question 26

What is one use of gamma rays in industry?

Accepted Answer

Inspecting welded joints for faults

Answer

Looking inside the body

Answer

Checking the authenticity of banknotes

Answer

Diagnosing bone fractures

Question 27

What is electromagnetic radiation?

Accepted Answer

The propagation of waves with an electric and magnetic field component

Answer

A process through which energy travels in the form of waves or particles

Answer

A type of energy generated by living tissues

Answer

A type of radiation that affects only humans

Answer

A mechanism relevant to causation of birth defects

Question 28

What are radiofrequency and microwave wavelengths used for?

Accepted Answer

Carrying information via amplitude, frequency, and phase modulation

Answer

Diminishing radial growth of pine trees

Answer

Causation of birth defects and cancer

Answer

Inducing cellular stress responses

Answer

Effecting magnetic-based homing mechanisms of birds

Question 29

What mechanism is relevant to causation of birth defects and cancer?

Accepted Answer

Chromosomal damage

Answer

Diminished radial growth of pine trees

Answer

Cell proliferation and differentiation

Answer

Environmental indicators

Answer

DNA errors accumulation

Question 30

What are examples of effects of electromagnetic radiation on plants and animals?

Accepted Answer

Diminished radial growth of pine trees, lowered density of bird species and mammals

Answer

Effects on the propagation of waves

Answer

Effects on bees and magnetic-based homing mechanisms of birds

Answer

Effects on environmental indicators and causation of birth defects

Answer

Effects on cellular stress responses and DNA errors accumulation

Question 31

What can provide valuable information about the effects of electromagnetic radiation?

Accepted Answer

Comparative studies in animals that rely on electromagnetic orientation

Answer

Studies on chromosomal damage mechanisms

Answer

Effects on plants and animal life

Answer

Non-thermal power levels of EMF exposure

Answer

Monitoring of environmental indicators

Question 32

What can be monitored as environmental indicators to assess the effects of electromagnetic radiation?

Accepted Answer

Plants and animals

Answer

Microbes and humans

Answer

Animals and humans

Answer

Bird species and mammals

Answer

Microbes and plants

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