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100

Which color is absorbed, and which color is reflected by the leaves of most plants?


A. Red and violet are reflected; green is absorbed.

B. Red and blue are absorbed; green is reflected.

C. Blue and green are absorbed; red is reflected.

D. Green and violet are reflected; red is absorbed.

Red and blue are absorbed; green is reflected.

100

Exposure to what type of radiant energy is sensed by human skin as warmth?

A. x-rays

B. infrared

C. ultraviolet

D. gamma rays

infrared

100

The image shows an example of white light entering a prism and coming out as colors of the rainbow.

How does a prism produce the colors of the rainbow from white light?

A. by absorbing colorless wavelengths from white light

B. by separating the light of different wavelengths

C. by changing the wavelength of white light into other wavelengths

D. by reflecting light with white wavelengths and transmitting light with colored wavelengths


by separating the light of different wavelengths

100

In a concave mirror, if an object is located beyond the center of curvature, what is the best description of the image formed?

A. real, inverted, and smaller than the object

B. real, inverted, and at the same point as the object

C. real, inverted, and larger than the object

D. light rays travel parallel to each other, no image formed

real, inverted, and smaller than the object

100

In a concave mirror, if an object is located between the center of curvature and the focal point, what is the best way to describe the image formed?

A. real, inverted, and smaller than the object

B. real, inverted, and the same size as the object

C. real, inverted, and larger than the object

D. light rays travel parallel to each other, no image formed

real, inverted, and larger than the object

200

Most objects emit infrared energy.

How do humans recognize this?

A. They see light emitted from the object.

B. Their skin senses it as warmth.

C. Their vision becomes clearer.

D. They experience "goose bumps" on their skin.

Their skin senses it as warmth.

200

What enables humans to "see" light in the infrared range of the electromagnetic spectrum?


A. RFIDchip

B. UVsensor

C. thermogram

D. video camera

thermogram

200

What is the best description of the constructive interference of light?

A. A mechanical wave meets an electromagnetic wave.

B. A longitudinal wave meets a transverse light wave.

C. Two waves have displacement in opposite directions.

D. Two waves have the same direction of displacement.

Two waves have the same direction of displacement.

200

Which part of the electromagnetic spectrum is divided into seven ranges of wavelengths and is the part visible to the human eye?

A. visible light

B. television waves

C. telemetry waves

D. infrared light

visible light

200

Which statement correctly compares radio waves and microwaves?

A. Only radio waves are used in communication.

B. Radio waves have a higher frequency than microwaves.

C. Radio waves have shorter wavelengths than microwaves.

D. Radio waves have lower radiant energy than microwaves.

Radio waves have lower radiant energy than microwaves.

300

Which statement best describes the relationship between an object's density and its index of refraction?

A. As the mass per unit volume of the substance increases, the refractive index decreases.

B. As the physical density of the substance increases, the refractive index increases.

C. As the optical density increases, the refractive index decreases.

As the tendency of the atoms to absorb energy before reemitting it increases, the refractive index increases.

300

Spectrum is Latin for which word?

A. scale

B. appearance

C. range

D. spread

appearance

300

Which object does not separate white light into the colors of the visible spectrum?

A. cones in the retina of the human eye

B. rain drops in the atmosphere

C. a diamond ring

D. rods in the retina of the human eye

rods in the retina of the human eye

300

Reflexio is the Latin root for which word?

A. bounce

B. refraction

C. bend

D. reflection

reflection

300

Which statement is most accurate?

A. The greater the physical density of a material, the lower the refractive index.

B. The greater the physical density of a material, the higher the refractive index.

C. The more optically dense the material, the higher the refractive index.

D. The greater the optical density of the material, the lower the refractive index.

The more optically dense the material, the higher the refractive index.

400

Which statement correctly compares radio waves and microwaves?

A. Radio waves have shorter wavelengths and lower frequencies than microwaves.

B. Radio waves have longer wavelengths and higher frequencies than microwaves.

C. Radio waves have shorter wavelengths and higher frequencies than microwaves.

D. Radio waves have longer wavelengths and lower frequencies than microwaves.

Radio waves have longer wavelengths and lower frequencies than microwaves.

400

What increases the ability to see at night?


A. an increased number of cone cells

B. an equal number of cone and rod cells

C. more cone cells than rod cells

D. an increased number of rod cells

an increased number of rod cells

400

What is the best description of the destructive interference of light?


A. A mechanical wave meets an electromagnetic wave.

B. A longitudinal wave meets a transverse light wave.

C. Two waves have displacement in opposite directions.

D. Two waves have the same direction of displacement.

Two waves have displacement in opposite directions.

400

What enables humans to "see" light in the infrared range of the electromagnetic spectrum?

A. RF technology

B. UV converter

C. night-vision goggles

D. microwave sensor

night-vision goggles

400

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect?


A. It is divided into seven ranges of wavelengths.

B. It is divided into nine ranges of wavelengths.

C. It contains ultraviolet, visible, and infrared light.

D. It contains only the colors of the rainbow and television waves.


  • It is divided into seven ranges of wavelengths.

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