Science

Which of the following is the leading disease in the exposure of too much x-ray? A. Cancer B. Cardiac Arrest C. Renal Failure D. Stroke

A. Cancer

What frequency is being used in penetrating rock for communication with submarines and inside mines and caves? A. Low to Medium Frequencies B. Medium to High Frequencies C. High to Very High Frequencies D. Super High Frequencies

A. Low to Medium Frequencies

Infrared is useful in which of the following applications? A. Remote control B. Television C. screen of electronic devices D. Night vision goggles

A. Remote control

Low frequency waves are suitable for communication over _________. A. Short distances B. Small distances C. great distances D. wide distances

A. Short distances

Ultraviolet waves have ____________ than the visible light and carry more energy. A. Shorter wavelengths B. Smaller wavelength C. Largest wavelength D. Longer wavelength

A. Shorter wavelengths

What is the main source of the UV radiation? A. Sun B. Moon C. UV lamp D. Nuclear Energy

A. Sun

Which of the following EM wave makes use of the artificial lighting? A. Visible Light B. X-ray C. Gamma rays D. Infrared

A. Visible Light

A cell phone is a radio ________ and _________that uses microwaves. A. sender; receiver B. sender; transmitter C. Transmitter; receiver D. Receiver; System

A. sender; receiver

Which of the following is the correct meaning of GPS? A. Guided Position Symbol B. Global Positioning System C. Guided Positioning System D. Global Perimeter Scale

B. Global Positioning System

What does red and yellow indicate in an infrared camera? A. Cold B. Heat C. Danger D. Water

B. Heat

How does food in the microwave oven being heated? A. It will agitate the solid molecules of the food creating molecular friction B. It will agitate the liquid molecules of the food creating molecular friction C. It will produce fire through molecular friction D. It will produce nuclear reaction on molecules

B. It will agitate the liquid molecules of the food creating molecular friction

The wave used in the application of satellite is called _______. A. Magnetic wave B. Microwave C. Infrared waves D. Bluetooth

B. Microwave

Among the following forms of the EM spectrum, which waves do not have enough energies to damage the braincells? A. gamma ray and infrared B. radiowave and visible light C. gamma ray and ultraviolet D. x-ray and ultraviolet

B. radiowave and visible light

What kind of fluorescent causes chemicals to glow in sunlight? A. Microwave B. UV C. Gamma ray D. Visible light

B> Ultraviolet/UV

How does microwave transmitted? A. Antenna to Receiver B. Antenna to Transmitter C. Antenna to Satellite D. Antenna to Sound

C. Antenna to Satellite

X-rays has the _________ and _________ in the electromagnetic spectrum. A. Low Frequencies and Low Energy B. Low Frequencies and High Energy C. High Frequency and High Energy D. High Frequency and Low Energy

C. High Frequency and High Energy

Which of the following electromagnetic waves is used in night vision googles? A. Gamma rays C. Infrared B. Ultraviolet D. X-ray

C. Infrared

What imaging technique uses powerful magnets, computer and radio waves to make detailed picture inside your body? A. Thermal Imaging B. Infrared Imaging C. Magnetic Resonance Imaging (MRI) D. X-ray image

C. Magnetic Resonance Imaging (MRI)

What vibration is needed to convert radio wave into sound wave in the speaker? A. Electrical vibration B. Magnetic Vibration C. Mechanical Vibration D. Radioactive Vibration

C. Mechanical Vibration

The electromagnetic wave that has the longest wavelength is the _________. A. Infrared C. Radio wave B. Microwave D. X-ray

C. Radio wave

Infrared radiation lies beyond the ______ end of the visible light. A. Blue B. Green C. Red D. Violet

C. Red

Which of the following statements about electromagnetic waves is INCORRECT? A. They are transverse waves. B. They are produced by moving objects. C. They do not require medium to propagate. D. They travel at different speed in vacuum depending on the wavelength.

C. They do not require medium to propagate

The ________ sends out a narrow beam of microwaves in short pulses .A. signal B. system C. transmitter D. radar

C. transmitter

A microwave oven uses microwaves to cook food. Where in the electromagnetic spectrum are microwaves found? A. The same wavelength as radio wave B. Higher frequency than visible light C. Higher frequency than infrared radiation D. Longer wavelength than ultraviolet waves

D. Longer wavelength than ultraviolet waves

What is the correct order of electromagnetic waves from lowest to highest frequency? A. Gamma rays, Microwave, X-rays, Ultraviolet, B. Ultraviolet. X-rays, Infrared, Radio waves C. Radio waves, Ultraviolet, Microwave, X-ray D. Microwave, Infrared, Ultraviolet, Gamma rays

D. Microwave, Infrared, Ultraviolet, Gamma rays

The radio signals that is modulating is called _____________; A. Radio Receivers B. Radio Transmitters C. Radio Wave D. Radio Frequency

D. Radio Frequency

In a microwave oven, foods absorb certain microwave frequencies very _________. A. Large B. Great C. Small D. Strong

D. Strong

What form makes your skin tan when exposed for a long period of time? A. Infrared B. Microwave C. Radiowave D. Ultraviolet

D. Ultraviolet

Radio waves has the ____________ wavelength in the electromagnetic spectrum A. shortest B. smallest C. largest D. longest

D. longest

II. Identify which EM spectrum

Gamma Rays

They are shortest in wavelength and highest in frequency. They carry the highest amount of energy, thus, they are more dangerous.

Gamma Rays

are emitted by stars and some radioactive substances.

Gamma Rays

can also reveal objects in the universe that cannot be seen in visible light

Infrared

refers to the visible region of the electromagnetic spectrum - that is, the range of wavelengths that trigger brightness and color perception in humans.

Light or "visible light"

wavelengths of the electromagnetic spectrum that humans can see

Light or "visible light"

__________________ can penetrate the flesh but not the bones. They are used in X-ray photography to help doctors look inside the body

Long wavelength X-rays

have smaller wavelengths than radio waves. They are used in satellite communications, radar, television transmission and cooking.

Microwaves

have the longest wavelength in the electromagnetic spectrum.

Radio waves

Which color the longest wavelength

Red

_______________________can penetrate even through metals. They are used in industry to inspect welded joints for faults.

Short wavelength X-rays

Checking bankbook signature

Ultraviolet

Crime Scene Inspection

Ultraviolet

come just after the ultraviolet rays. They are of shorter wavelength but carries higher energy than the UV

X-ray

2. Cellphones

microwaves

II. Below are the applications of electromagnetic waves. State the type of electromagnetic wave used in each application. 1. Satellite communications

microwaves

Radar

microwaves

3. TV/TV broadcasting

radiowaves

Ultraviolet radiation is also used in __________ from drinking fountains. Some washing powder also contains fluorescent chemicals which glow in sunlight. This makes your shirt look whiter than white in daylight.

sterilizing water

When white light passes through a prism, it is separated into its constituent colors:

the red, orange, yellow, green, blue, indigo and violet.

Which color has the shortest wavelength

violet