Unit 5: Transfer of Info & Energy (I.6E, I.6F, I.6G)

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second (km/s).

Front

What is the difference between sound waves and light waves in terms of medium?

Back

Sound waves require a medium (solid, liquid, or gas) to travel, while light waves can travel through a vacuum.

Front

What is interference in the context of wave behavior?

Back

Interference occurs when two or more waves overlap and combine to form a new wave pattern.

Front

What is refraction?

Back

Refraction is the bending of waves as they pass from one medium to another due to a change in speed.

Front

What are renewable energy sources?

Back

Energy sources that are replenished naturally, such as solar, wind, and hydroelectric power.

Front

Why do different materials affect cell phone signals?

Back

Different materials can absorb, reflect, or transmit radio waves differently, impacting signal strength.

Front

What is the principle behind radar technology?

Back

Radar uses the reflection of radio waves to detect objects and determine their distance.

Front

What is the relationship between wave speed, frequency, and wavelength?

Back

Wave speed = frequency × wavelength.

Front

What is the significance of the electromagnetic spectrum?

Back

The electromagnetic spectrum encompasses all types of electromagnetic radiation, including visible light, radio waves, and X-rays.

Front

What is the role of interference in sound waves?

Back

Interference can create areas of increased sound (constructive interference) or decreased sound (destructive interference).