Light Waves

The wave of energy we can see is ___________

• visible light

• radio waves

• microwaves

• x-rays

Answer explanation

The wave of energy we can see is called visible light. It is part of the electromagnetic spectrum that is detectable by the human eye, unlike radio waves, microwaves, or x-rays, which are not visible.

Tags

NGSS.MS-PS4-1

What is it called when light waves enter a substance?

• refraction

• reflection

• energy

• absorption

Answer explanation

When light waves enter a substance, they can be absorbed by the material. This process is known as absorption, where the energy of the light is taken in by the substance, distinguishing it from refraction or reflection.

Tags

NGSS.MS-PS4-2

When light bounces off something it is known as _____________

• reflection

• refraction

• light energy

• mechanical energy

Answer explanation

When light bounces off a surface, it is called reflection. This process allows us to see objects as light reflects back to our eyes, making reflection the correct term for this phenomenon.

Tags

NGSS.MS-PS4-2

The definition of the word refract is __________

• to make warm

• to go through

• to bend

• to create energy

Answer explanation

The word 'refract' means to bend light as it passes through different mediums. This is why 'to bend' is the correct definition, while the other options do not accurately describe the term.

Tags

NGSS.MS-PS4-2

What color of the rainbow has the longest wavelength?

• red

• blue

• green

• violet

Answer explanation

Red has the longest wavelength in the visible spectrum of light, measuring approximately 620-750 nanometers. This makes it the first color in the rainbow, confirming that red is the correct answer.

The highest point of a wave is known as the ___________

• wavelength

• trough

• amplitude

• crest

Answer explanation

The highest point of a wave is called the crest. It represents the maximum displacement of the wave from its rest position, distinguishing it from the trough, which is the lowest point.

Tags

NGSS.MS-PS4-1

The louder the sound, the higher the ____________ of the wave.

• amplitude

• wavelength

• pitch

• compression

Answer explanation

The amplitude of a wave refers to its height, which determines the loudness of the sound. Therefore, as the sound gets louder, the amplitude increases, making it the correct choice.

Tags

NGSS.MS-PS4-1

What type of wave is a light wave?

• A sound wave

• A seismic wave

• A electromagnetic wave

• A mechanical wave

Answer explanation

A light wave is classified as an electromagnetic wave, which means it does not require a medium to travel through, unlike sound and mechanical waves. Seismic waves are also different, as they are related to geological activity.

What is the amplitude of this model wave?

• 0mm

• 5cm

• 15cm

• 10mm

Answer explanation

The amplitude of a wave is the maximum displacement from its rest position. In this case, the correct amplitude is 10mm, as it represents the peak value of the wave's oscillation.

Tags

NGSS.MS-PS4-1

Which of the following are not a part of the Electromagnetic Spectrum?

• Gamma Rays

• Radio waves

• Magnetic waves

• x-rays

Answer explanation

Magnetic waves are not part of the Electromagnetic Spectrum. The spectrum includes gamma rays, radio waves, and x-rays, which are all types of electromagnetic radiation.

Tags

NGSS.HS-PS4-4