Review Time Part 2

Who developed a scientific theory that explains electromagnetic waves?

• Hans Christian Oersted

• Heinrich Hertz

• James Clerk Maxwell

• Michael Faraday

Which group of electromagnetic waves correctly describes non-ionizing radiation?

• Microwaves, Visible light, X-ray

• Radio waves, Visible light, Gamma-ray

• Radio waves, Microwaves, Infrared

• Ultraviolet, X-ray, Gamma-ray

How would you apply what you learned about the risk and benefits of electromagnetic waves?

I. Sleep with your cell phone next to you.

II. Let a pregnant woman have her x-ray check.

III. Apply sunblock whenever going outside the house.

IV. Schedule a monthly medical check-up with MRI, and CT scan.

• I and II

• I, II, IV

• III only

• III and IV

Which of the following is NOT a potential result from human tissue absorbing ionizing radiation?

• Cancer

• Damage to cell

• Infection

• Death

Which of the following types of electromagnetic radiation is NOT absorbed by the atmosphere?

• Infra-red

• Radio Waves

• Ultraviolet

• Visible Light

Which group of devices utilizes microwave?

• Cellular phones, oven, radar, satellites

• Oven, remote control, satellites, television

• Night vision goggles, oven, radar, satellites

• Remote control, thermal scanner, satellites, television

What is/are the effect/s of EM radiation on living things and the environment?

I. It can treat cancer.

II. It can be used to cook food.

III. It can lead to global warming.

IV. It can cause skin burns or other skin-related problems

• II only

• III only

• I and IV only

• I, II, III, IV

Which part of the electromagnetic spectrum is useful for plants in making their food?

• Radio Waves

• Ultraviolet

• Visible Light

• X-Ray

Gamma radiation is used for tumor and cancer treatment through radiotherapy. Given that gamma radiation is ionizing, what are the potential impacts or effects of this form of treatment?

I. It can make your body radioactive.

II. It gives acute effects like skin redness and hair loss.

III. It will alter the cells in the body and lead to mutation.

IV. It can lead to damage of good and bad cells in the body.

• I, II and III

• I, II and IV

• I, III and IV

• II, III and IV

Which wave properties change when light passes from air into glass?

• Color and Speed

• Speed and Wavelength

• Wavelength and Color

• Frequency and Wavelength