Intro to waves and understanding light

Which of the following best defines light?

• The emission of electromagnetic radiation within the visible spectrum.

• The reflection of sound waves off a surface.

• The movement of air particles resulting in the sensation of brightness.

• The transmission of heat energy through a vacuum.

Which of the following best describes darkness?

• The presence of excessive shadows and dim lighting conditions.

• The absence of light resulting in the absence of visual perception.

• The reflection of sound waves off a surface.

• The complete absorption of waves within the visible spectrum.

Which of the following best describes shadows?

• The areas where objects block the path of light, creating darkened regions.

• The absence of light resulting in the absence of visual perception.

• The reflection of sound waves off a surface.

• The complete absorption of waves within the visible spectrum.

Tags

NGSS.MS-PS4-2

What is nature's main light source?

• The moon's reflection of sunlight.

• Bioluminescent organisms found in deep-sea ecosystems.

• The combustion of natural gas and oil reserves.

• The sun's emission of electromagnetic radiation

Is the moon a luminous object?

• Yes, the moon emits its own light.

• No, the moon reflects sunlight to appear illuminated.

• No, the moon is purely a dark object with no light emission or reflection.

Light has the ability to travel through space and time.

• TRUE

• FALSE

Tags

NGSS.MS-PS4-2

How long does it take light to reach Earth from the Sun?

• About 4 minutes

• About 6 minutes

• About 8 minutes

• About 30 minutes

What is the speed of light?

• Approximately 300,000 meters per second.

• Roughly 186,282 meters per second.

• About 1,080,000,000 feet per hour.

• Approximately 300,000,000 meters per second.

Pick the correct option:

• Light travels around corners

• Light travels in straight lines

• Light travels in a circular motion

Tags

NGSS.MS-PS4-2

What do we call an object that can produce/emit its own light?

• Illuminators

• Reflectors

• Incandescent

• Luminescent