Effects of EM Radiation- Evaluation

Directions: Read each of the following statements or questions. Choose the best answer from the given options.

What type of electromagnetic waves cause sunburns?

• Microwave

• Infrared

• Visible Light

• Ultraviolet

Which electromagnetic waves enable humans to see?

• Microwave

• Infrared

• Visible Light

• Ultraviolet

The following can be observed upon the thinning of the ozone layer, EXCEPT;

• High levels of UV rays can penetrate the Earth.

• Plankton sinks deeper into the water when exposed to too much UV.

• It increase the amount of visible light plankton receives.

• It will affect photosynthesis and growth of organisms.

Which pair of EM wave emits an ionizing radiation?

• Radio wave and Microwave

• Microwave and Infrared

• Infrared and Visible Light

• X-ray and Gamma rays

How does radiation affect living cells?

• Radiation can damage DNA inside living cells.

• Radiation can strike the DNA molecule directly, ionizing and damaging it.

• Radiation can ionize water molecules, producing free radicals that react with and damage DNA molecules.

• All of the above

This EM radiation always played important roles in our environment, and affects nearly all living organisms such as biological actions of many kinds have evolved to deal with it.

• Microwave

• Infrared

• Visible Light

• Utraviolet

Which government agency is in charge of the safe use of ionizing radiation?

• Philippine Nuclear Research Institute (PNRI)

• Department of Science and Technology (DOST)

• Philippine Institute of Volcanology and Seismology (PHIVOLCS)

• Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA)

Which type of radiation has the greatest ionizing effect?

• Gamma Rays

• X-rays

• Ultraviolet

• Visible light

When atoms in living cells become ionized, what will usually happen to cells?

• The cells will die.

• The cell repairs itself.

• The cell mutates incorrectly and can become cancerous.

• All of the above

Why are high frequency EM waves harmful to living things?

• Because of their high intensity.

• Both a and b

• Because of their high energy.

• A only