REVIEW in Science 10 (2ND QUARTER)

Who is the scientist best known for formulating the theory of electromagnetism and connecting light with EM waves?

• James Clerk Maxwell

• C. Hans Christian Orstead

• Albert Einstein

• D. Michael Faraday

Which of the following statements is INCORRECT on the propagation and transmission of EM waves?

• They transfer energy through matter or across space.

• The electromagnetic waves are propagated from the transmitter antenna to the receiver antenna.

• Electromagnetic waves are electric and magnetic fields traveling through empty space with the speed of light c.

• If a charge is moving with constant velocity, electric and magnetic fields do not change with time, hence it produces electromagnetic waves.

Which of the following correctly orders electromagnetic radiation for increasing frequency and decreasing wavelength?

• Radio Waves, Visible Light, IR Radiation, UV Radiation, X-Rays, γ -Rays

• γ-Rays, Visible Light, IR Radiation, UV Radiation, X-Rays, Radio Waves

• Radio Waves, UV Radiation, Visible Light, IR Radiation, X-Rays, γ -Rays

• Radio Waves, IR Radiation, Visible Light, UV Radiation, X-Rays, γ -Rays

What happens to its frequency if the wavelength is doubled?

• Reduced in half

• Doubled

• Tripled

• Remains the same.

How are gamma rays used in the food industry?

• Warming Food

• Examining the taste of food

• Food Irradiation

• Breaking food into smaller pieces

Which application uses microwaves to detect the range, angle, or velocity of objects?

• CT scan

• MRI

• RADAR

• SONAR

How do EM waves help in detecting counterfeit money?

• By heating the paper and examining its remains.

• By illuminating the bills with ultraviolet rays to see unique markings.

• By reading the information with visible light in the bills.

• By measuring the dimensions using gamma-ray.

What EM wave was utilized to measure temperature variation of the body?

• Infrared

• Gamma Ray

• Radio Wave

• X-Ray

Which of the following conditions may an X-ray detect?

• Bladder Infection

• Diarrhea

• Fever

• Pneumonia

What is the frequency of radio waves with a wavelength of 30 m?

• 1.0 x 10^7 Hz

• 1.0 x 10-7 Hz

• 1.2 x 10-7 Hz

• 1.0 x 10-17 Hz