Alberta Grade 8 Science – Light and Optical Systems Practice Test

These questions are part of the practice quiz. Start practicing

• In nearsighted vision, where is the image formed relative to the retina?
• What moves in a transverse wave?
• In a refracting telescope, what is the objective lens?
• What does a ray diagram represent?
• Which part of the eye primarily refracts light to help focus it on the retina?
• What is a mechanical wave?
• The layer at the back of the eye on which an image is focused.
• In a translucent material, what occurs?
• In a transverse wave, how does the matter move relative to the direction the wave travels?
• Which radiations are harmful to living organisms due to their extremely high frequencies?
• What is the function of the cornea?
• In corrective eyewear for farsightedness, which lens is used?
• Which term is a line perpendicular to a surface?
• Light is defined as what?
• When the frequency is low, what happens to the amplitude?
• Which type of telescope uses lenses to bend light to form an image?
• Which nerve transmits visual signals from the eye to the brain?
• Which statement best describes radio waves?
• What is a compression wave?
• Which term denotes a device that separates light into a spectrum?
• How many lenses are in a refracting telescope?
• The middle layer of the eye that absorbs excess light.
• Which line is the normal line in reflection?
• What is a wavelength?
• Bioluminescence refers to light produced by what?
• Opaque objects cast shadows because they...
• How does light travel in a pair of binoculars?
• Which term describes the ray that reflects off a mirror?
• Through what path does light primarily travel?
• Which device forms an image that appears smaller and farther away?
• If a person can clearly see distant objects but cannot bring near objects into focus, which condition is described?
• Which eye condition is described as a condition in which the eye does not focus properly because of uneven curvatures of the cornea?
• If a person can clearly see nearby objects but struggles with distant objects, which condition do they have?
• What are the two types of waves?
• What term describes a ray of light going toward the mirror or other object?
• Which statement best describes a mechanical wave's medium requirement?
• Where do light rays cross after passing through a converging lens?
• Which term describes the distance between adjacent crests?
• The suspensory ligaments are what?
• Which lens is used to correct nearsighted vision?
• Which eye structure contains light-sensitive cells that respond to dim light?
• Which statement about gamma rays is true?
• How does phosphorescence differ from fluorescence?
• Which statement about the angle of reflection is true?
• In a fluorescent lamp, what is the typical energy conversion sequence?
• Which statement about gamma rays is true?
• What is Vitreous Humor?
• An opaque object...
• Which statement describes the law of reflection?
• Which describes incandescent light?
• What is the shutter on a camera?
• Which type of lens produces an upright image?
• Which type of radiation has the longest wavelengths and lowest energies?
• Which statement correctly describes visible light?
• Light is defined as a wave of alternating electric and magnetic fields. Which statement best describes light?
• Which statement is true about virtual images produced by plane mirrors?
• What is the ray model of light?
• Why do telescopes need a large light-collecting area?
• Which type of radiation has the longest wavelengths among common electromagnetic waves?
• Which electromagnetic radiation has the lowest frequency?
• What is a pupil?
• Which eye condition is caused by uneven curvatures of the cornea causing improper focus?
• Which statement describes reflection?
• What happens to light when it passes into a different medium?
• What does the eyepiece lens do in a refracting telescope?
• Where is the blind spot located in the eye?
• Which statement best distinguishes incandescent lamps from fluorescent lamps?
• What term describes the image formed by a plane mirror that cannot be projected on a screen but can be seen in the mirror?
• Which statement describes a compression wave?
• What is amplitude?
• Which term tells how much a ray will bend as it travels through its material?
• Vitreous Humor is
• In a transparent material, what happens to light?
• In a refracting telescope, the component that gathers and focuses light from distant objects is the ...
• Which part of the eye is responsible for black and white vision?
• Which type of radiation has the longest wavelengths and lowest energies?
• Which statement about aperture is true in photography?
• In a reflecting telescope, the objective is?
• Which structure is the tough, white outer coat of the eyeball?
• Where is the blind spot located?
• Which type of radiation is used to observe dense interstellar clouds and track the motion of cold gas?
• What does a convex lens do to light rays regarding focal point?
• Chemiluminescence involves conversion from which energy form to light energy?
• What term describes a person who can see nearby objects clearly but cannot bring distant objects into focus?
• Phosphorescence occurs when energy is stored and released...
• Which term describes a material that transmits some colors and blocks others?
• Which radiations lie to the left of the visible spectrum?
• Which term describes the ray that reflects off of a mirror?
• What is Aqueous Humor best described as?
• A substance that transmits some colors and blocks others is called?
• Which part of the eye adjusts pupil size to regulate light intake?
• Which description best describes a plane mirror?
• What is a muscle?
• A line perpendicular to a surface is called?
• What is aperture in photography?
• Radio waves and microwaves are used to peer inside dense interstellar clouds and track the motion of cold, dark gas. Which type of radiation does this describe?
• The colored part of the eye that controls the amount of light entering the eye.
• Which statement about the normal line is true?
• What image does a concave mirror form?
• Which term describes how much a ray bends when it travels through its material?
• Which type of lens produces an inverted image?
• What is the clear tissue at the front of the eye that covers and protects the eye and helps to bend light?
• Which statement about gamma rays is true?
• What is the function of the choroid coat?
• What are examples of mechanical waves?
• What does the electromagnetic spectrum refer to?
• In binoculars, how does light travel through the optical system?
• Which of the following is an example of a mechanical wave?
• Which term describes the pupil?
• Which statement best distinguishes a transparent material from a translucent one?
• In a transverse wave, the motion of matter is perpendicular to the direction of travel.
• Which statement defines the angle of incidence in reflection?
• Amplitude is defined as what?
• Which term describes a person who can see distant objects clearly but cannot bring near objects into focus?
• What does a concave lens do to light rays?
• Which device forms an image that appears closer than it is?
• To achieve greatest magnification, the telescope needs:
• The clear structure near the front of the eye that bends light rays.
• A non-luminous object...
• What special object is in a pair of binoculars?
• In a telescope, the term objective refers to the lens or mirror that first ...
• Which eye component is the layer at the back of the eye that contains photoreceptors?
• Which statement describes a luminous object?
• Which statement about electromagnetic waves is true?
• The angle between a reflected ray and the normal to a surface is called?
• What type of telescopes are in a pair of binoculars?
• In corrective eyewear for nearsightedness, which lens is used?
• What is a crest?
• Which statement about infrared rays, microwaves, and radio waves is true?
• When the frequency is high, what happens to the amplitude of the wave?
• What image does a convex mirror form?
• What is the unit used to measure waves?
• Which of the following is NOT an example of a mechanical wave?
• A mirror forms a clear image due to which property of light?
• Which term describes something that does not allow light to pass through?
• Which type of electromagnetic energy is invisible to the human eye?
• Energy conversion pathway of an incandescent light bulb?
• The bending of light when it passes from air into water is an example of which phenomenon?
• What is the function of the iris?
• Gamma rays are the most damaging rays to humans. Which type of radiation fits this description?
• In farsighted vision, where is the image formed relative to retina?
• What does the Eyepiece lens do in a reflecting telescope?
• Which statement about fluorescent materials is true?
• The nerve that carries neural impulses from the eye to the brain.
• In astronomy, which radiation is used to study dense interstellar clouds and track the motion of cold gas?
• Which statement correctly describes light?
• What is the primary purpose of the eyepiece in a telescope?
• Which term describes the muscles that regulate the size of the pupil?
• What is the eyepiece (ocular lens) used for?
• White light is composed of what?
• Which lens is used to correct farsighted vision?
• Chemiluminescence produces light with minimal what?
• Which lens diverges light?
• In photography, the diaphragm is best described as which of the following?
• What are Cones?
• Aqueous Humor is best described as
• What is a plane mirror?
• The opening in the iris that regulates the amount of light entering the eye.
• What device separates white light into colors?
• Which statement describes Cones?
• Which lens converges light to a focal point?
• What is frequency?
• If many crests pass a fixed point per second, what property is described?
• Which statement best describes light?
• Which tissue forms the transparent window at the front of the eye and begins focusing light?
• Which device can produce a real, inverted image under proper conditions?
• What is a trough?
• Which radiation is most damaging to living tissue?
• Chemiluminescence is characterized by which process?
• What are examples of electromagnetic waves?
• What is a wave?
• Which term refers to the range of light visible to the human eye?
• What is an electromagnetic wave?
• Which term describes electromagnetic energy invisible to the human eye?
• Which description correctly identifies the sclera?
• In fluorescent lighting, what happens to ultraviolet light?
• Which type of electromagnetic radiation has the highest frequency and energy?
• A luminous object is one that...