Which of these is used for both entertainment and communication?

• Television

• Bicycle

• Chalkboard

• Hammer

Which of these devices uses electromagnetic waves to transmit visual and audio information?

• Television

• Refrigerator

• Microwave Oven

• Washing Machine

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-3

What is the primary scientific principle that allows television screens to display images?

• Electromagnetic Induction

• Photoelectric Effect

• Thermal Expansion

• Nuclear Fission

Tags

NGSS.MS-PS4-3

Which part of the electromagnetic spectrum is primarily used in television broadcasting?

• Gamma Rays

• X-rays

• Visible Light

• Radio Waves

In the context of television technology, what does the term 'pixel' refer to?

• A type of sound wave

• A unit of digital image

• A type of electromagnetic wave

• A unit of electrical current

Which scientific concept is crucial for the functioning of remote controls used with televisions?

• Infrared Radiation

• Ultraviolet Radiation

• Gamma Radiation

• X-ray Radiation

What is the role of phosphors in a traditional cathode-ray tube (CRT) television?

• To emit light when struck by electrons

• To amplify sound

• To cool the device

• To store electrical energy

Which of the following is a real-world application of the Doppler effect in television technology?

• Adjusting screen brightness

• Color correction

• Sound frequency modulation

• Channel tuning

Tags

NGSS.HS-PS4-1

What scientific principle is used in the creation of 3D movies?

• Polarization of Light

• Thermal Conductivity

• Nuclear Fusion

• Magnetic Resonance

Which gas is commonly used in plasma televisions to create images?

• Oxygen

• Neon

• Argon

• Helium