SCIENCE - REVIEWER

6. Question: Discuss the potential risks and benefits associated with the use of ultraviolet (UV) radiation in everyday life.

• UV radiation is harmless and has no effect on human health.

• UV radiation can cause skin cancer but is also necessary for the production of vitamin D in the skin.

• UV radiation is only used in specialized scientific research and has no practical applications.

• UV radiation has the potential to cure all types of cancer without any side effects.

An earthquake is caused by electromagnetic waves because they pass don't through a medium.

• True

• False

Answer explanation

False, an earthquake is caused by mechanical waves which require a medium to pass through.

9. The unit of Magnetic flux was named after him.

• Joseph Henry

• Heinrich Hertz

• Michael Faraday

• Wilhelm Eduard Weber

He formulated the concept of photoelectric effect. 

• Albert Einstein

• Joseph Henry

• Wilhelm Eduard Weber

• Heinrich Hertz

Which of the following best describes the electromagnetic spectrum?

• A range of colors visible to the human eye

• The specific range of frequencies used for cellular communication.

• A continuum of all possible frequencies of electromagnetic radiation.

• The spectrum of light emitted by stars in the universe.

Explain why certain frequencies of electromagnetic radiation, such as gamma rays and X-rays, are used in medical imaging procedures.

• Because they are easily absorbed by the human body, making them safe for medical use.

• Because they have the longest wavelengths, allowing them to travel deep into the body.

• Because they are the only frequencies that can be detected by medical equipment.

• Because they have the ability to penetrate through tissues and create detailed images of bones and internal organs.

Analyze the role of radio waves in modern communication systems.

• Radio waves are primarily used for heating food in microwave ovens.

• Radio waves are used to transmit information over long distances through radio, television, and cellular networks.

• Radio waves are only used for entertainment purposes and have no other applications.

• Radio waves are limited in their ability to carry information and are not suitable for communication.

Moves through a medium such as solid, liquid, gas, etc.

• Mechanical Wave

• Electromagnetic Wave

• Harbor Wave

• Matter Wave

Evaluate the impact of technological advancements in understanding and utilizing the electromagnetic spectrum.

• Technological advancements have focused solely on harnessing visible light for practical applications.

• Technological advancements have made it more difficult to study and utilize the electromagnetic spectrum.

• Technological advancements have had no significant impact on our understanding or use of the electromagnetic spectrum.

• Technological advancements have led to improved methods of communication, medical imaging, and scientific research.

4. Question: How does the interaction of electromagnetic waves with matter differ across the spectrum?

• Electromagnetic waves interact with matter differently depending on their frequency and wavelength.

• Electromagnetic waves only interact with matter at specific wavelengths.

•   

  Electromagnetic waves do not interact with matter at all.

• Electromagnetic waves always interact with matter in the same way regardless of their frequency.