Test
Light and Optics
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Preguntas del test (53)
1All different types of waves are a form of energy and travel out in all directions.
- AVerdadero
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2Properties of waves:
What is the amplitude of a wave?- AThe height of a wave from the rest point to the crest (highest point).
- BThe distance from the crest of one wave to the crest of the next.
- CThe number of times a full wavelength passes a certain point in a given unit of time.
3Properties of waves:
What is the frequency of a wave?- AThe number of times a full wavelength passes a certain point in a given unit of time.
- BThe distance from the crest of one wave to the crest of the next.
- CThe height of a wave from the rest point to the crest (highest point).
4Properties of waves:
What is a wavelength?- AThe distance from the crest of one wave to the crest of the next.
- BThe number of times a full wavelength passes a certain point in a given unit of time.
- CThe height of a wave from the rest point to the crest (highest point).
5Shorter frequencies have lower energy than longer wavelengths.
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6Which of these options are part of the electromagnetic spectrum?
- AElectromagnetic radiation
- BUltra violet
- CGamma rays
- DX-rays
- EKryptonite
- FMicrowaves
- GVisible light
- HInfrared radiation
- IRadio waves
- JFrequencies
7Different wavelengths are
registered in humans as different
colours.- AVerdadero
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8Which colour has the longest wavelength?
- ARed
- BOrange
- CYellow
- DGreen
- EBlue
- FIndigo
- GViolet
9Which colour has the shortest wavelength?
- ARed
- BOrange
- CYellow
- DGreen
- EBlue
- FIndigo
- GViolet
10Why do different animals need to see differently?
- ASo that they can locate their food/prey and so that they can avoid predators.
- BSo that they can find their mates.
- CSo that they can tell which types of fruit are poisonous.
11Bees see ultra violet light that helps them see flowers.
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12What is another way humans can detect wavelengths?
- AHumans can feel infrared radiation as heat.
- BHumans can feel radio waves.
- CHumans can see x-rays.
13What technology uses radio waves?
- AAntennas
- BSome equipment in the medical field
- CBirds
- DX-ray machines
14What technology uses microwaves?
- ACell phones
- BRadar
- CNintendo consoles
- DTelevision
15What technology uses Infrared waves?
- AThermal imaging cameras
- BHunters- scopes
- CMilitary- scopes
- DDucks
- EX-ray machines
16What technology uses visible light?
- ALasers
- BCameras
- CBees
- DGPS systems
17What technology uses ultraviolet light?
- AFood processing plants
- BHospitals- used to sterylize
- CUV pen
- DChemotherapy
- ECameras
18What technology uses x-rays?
- AX-ray machines in hospitals
- BFood processing plants
- CHunting
19What technology uses gamma rays?
- AChemotherapy
- BCancer
- CKill bacteria
- DX-rays
- EFood processing plants
20Longer waves have lower frequencies and shorter waves have higher frequencies.
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21Reflection: what happens when light bounces off of a surface. Each ray always
bounces off at the same but opposite angle as it came from.
This is called the law of reflection.- AVerdadero
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22Light rays will travel parallel to one another if they hit a smooth surface, but may
scatter if they hit a rough or uneven surface.- AVerdadero
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23When light travels through a different medium (ex. Starts in air, then travels through
water), its speed may change. As a result, the angle that the light is travelling at may
change. This is called refraction.- AVerdadero
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24The focal point of a concave lens is...
- ABehind the lens
- BIn front of the lens
25The focal point of a convex lens is...
- ABehind the lens
- BIn front of the lens
26What are the main parts of the eye?
- ACornea
- BIris
- CPupil
- DLens
- ECiliary Muscle
- FRetina
- GOptic Nerve
- HBlood Vessels
- ISclera
27What is the Cornea?
- AThe cornea is the transparent front part of the eye that covers the iris and pupil.
- BThe cornea is the white part of the eye.
- CThe cornea is the colourful part of the eye.
28What is the iris?
- AThe iris is a hole located in the centre of the iris of the eye that allows light to strike the retina.
- BThe iris is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina.
29What is the pupil?
- Athe iris is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina.
- BThe pupil is a hole located in the centre of the iris of the eye that allows light to strike the retina.
30What is the lens?
- AThe lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina.
- BThe lens is a concave structure in the eye that focuses light on the back of the retina, it helps to refract light along with the cornea.
31What is the ciliary muscle?
- AThe ciliary muscle is a ring of smooth muscle in the eye's middle layer that controls clarity/accommodation for viewing objects at varying distances and regulates the flow of aqueous humour.
- BThe ciliary muscle is the muscle that regulates the shape of the iris and gives the iris it's colour. It helps to focus on things that are different distances in front of you.
32What is the retina?
- AThe retina is the innermost, light-sensitive layer of tissue of the eye that contains both rods and cones and is connected to the optic nerve, allowing your brain to receive information.
- BThe retina is the layer of tissue that goes around the whole eye, it contains the vitreous humour, which contains the iris, lens, sclera, optic nerve, and the rest of the inside of the eye.
33What is the optic nerve?
- AThe optic nerve, also known as cranial nerve II, or simply as CN II, is a paired nerve that transmits visual information from the retina to the brain.
- BThe optic nerve, also known as the cranial nerve ll, or simply as CN ll, is a paired nerve that flips the image you are seeing around and then sends that information to the brain.
34What are blood vessels?
- AThe blood vessels are the part of the circulatory system that transports blood throughout the human body. They are important for getting oxygen and nourishment to the eye.
- BThe blood vessels are what connect your eye to the rest of the body and hold the eye in place in its socket. Without the blood vessels your eyes would fall out of their socket the first time you sneezed.
35What is the sclera?
- AThe sclera, also known as the white of the eye, is the opaque, fibrous, protective, outer layer of the human eye containing mainly collagen and some elastic fibre.
- BThe sclera, also known as the black part of the eye, is the opaque, fibrous, protective outer layer of the human eye containing mainly collagen and some elastic fibre.
36Humans have what are called camera eyes, because of similarities that we share with
cameras.- AVerdadero
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37The retina is filled with two types of photo receptors. Rods, which allow us to see colour, and cones that allow us to see light.
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38What is a blind spot?
- AThe blind spot is where the optic nerve is located on the retina. Because the nerve is there instead of the retina, there are no photo receptors in this area, so no information can be sent to the brain.
- BThe blind spot is the spot that you can't see in the side mirrors when you are driving, forcing you to shoulder check to make sure there is no one or thing located in that spot.
39For people whose lenses cannot converge light enough
(farsighted), convex lenses are prescribed. For individuals
whose natural lenses focus light before it reaches the
retina (near-sighted), concave lenses are prescribed.- AVerdadero
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40Select the characteristics of a compound eye:
- AInsects and crustaceans have compound eyes.
- BCompound eyes detect the slightest bit of movement.
- CEach eye is made up of many smaller units in compound eyes. Each individual
unit is called an ommatidium. - DWhen the light-sensitive cell fires, it sends a message to
the animal’s brain through nerve fibres. - EInsect eyes tend to have a convex surface, so
ommatidia lenses face in almost all directions. - FMultiple lenses make
it difficult to form a single, coherent image. - GThey can all see up to three kilometres.
- HAll Insects and crustaceans can dig and fly because of these eyes.
41No animal can see in complete darkness.
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42Nocturnal animals have large pupils to help capture as much light as possible.
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43Nocturnal animals have more cones than rods in their eyes.
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44Birds have...
- AThree types of cones.
- BFive types of cones.
- CFour types of cones.
- DSic types of cones.
45If light hits an object, it can’t go
any further. So, if an object gets between the light and our eyes, we
perceive this lack of light as a shadow.- AVerdadero
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46Translucent: Allow some, but not all,
light to pass through. Light rays will
each be bent a different way.
Ex. Frosted window pane.- AVerdadero
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47Transparent: Can transmit
light, meaning light can travel
straight through them.
Ex. Glass or plastic.- AVerdadero
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48Opaque: Do not allow any light to pass through them. They absorb or
reflex the light that passes through them. Since light can’t get through a
shadow is created behind it. Ex. Wood, metal and brick.- AVerdadero
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49Non-luminous: Does not produce light. Light that gets to your eyes from
an opaque object is actually light reflected from the object.- AVerdadero
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50Luminous: A light source is luminous, it produces light.
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51What are the four types of colourblindness?
- ADeuteranopia
- BProtanopia
- CTritonopia
- DTotal colour blindness
- ERetinal detachment
- FGlaucoma
- GCataracts
52Concave lenses make things look smaller.
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53Convex lenses make things look smaller.
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Información
- Descripción
- Test sobre Light and Optics, creado por Aliyah Merritt el 15/03/2019.
- Autor
- Aliyah Merritt
- Idioma
- English
- Visitas
- 0
- Historial
- Creado el 15 mar 2019 · actualizado el 16 mar 2019
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- Valoración
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