Test
Science A2
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Preguntas del test (50)
1What are Light and Sound?
- AWaves
- BMatter
- CEnergy
- DPatterns
2Light only Travels in Straight Lines
- AVerdadero
- BFalso
3[blank_start]Luminous[blank_end] objects make light, whereas non luminous objects simply [blank_start]reflect[blank_end] other light. For example, the sun is a luminous [blank_start]extended[blank_end] source of light, whereas the moon is non luminous; [blank_start]reflecting[blank_end] the light created from the sun.
- ALuminous
- Breflect
- Cextended
- Dreflecting
4Label this diagram.
- APlane Mirror
- BLight Box
- CReflective Metal
- DConvex Mirror
- ERay of Reflection
- FRay of Light
- GRay
- HRay of Incidence
- IMidpoint
- J90 Degree Line
- KNormal
- LPerpendicular Normal
- MRefracted Ray
- NRay of Reflection
- ORay of Refraction
- PIncidental Angle
- QAngle Co-interior Reflection
- RReflected Angle
- SAngle of Reflection
- TAngle of Ray
- UAngle of Incidence
- VAngle of Light
5[blank_start]Opaque[blank_end]: Any object which does not allow light through.
Translucent: Any object which allows light through; but [blank_start]obstructed[blank_end]
Transparent: Any object which lets light [blank_start]through[blank_end] with minimal obstruction- AOpaque
- BTransparent
- CTranslucent
- Dwarped
- Eobstructed
- Fdiminished
- Gfuzzy
- Hthrough
- Ipass
- Jbe seen
6What features are typical of a convex mirror?
- AHas a focal length
- BWidest point is at the edge
- CMiddle budges out
- DFocal point is virtual
- EFocal point is real
- FThere is a focal length
- GDiverges light
- HConverges light
- IUpright
- JEnlarged
7What features are typical of a concave mirror?
- AVirtual image
- BReal focal point
- CHas a measurable focal length
- DInverted image
- EConverges light
- FDiverges light
- GIf the mirror is placed very close to the object, a magnified, erect and virtual image is obtained.
- HIf the mirror is placed very far from the object, a magnified, erect and virtual image is obtained.
8Label this diagram
- AIncident ray
- BAngle of Incidence
- CNormal
- DAngle of Refraction
- ERefracted Ray
9When light passes from a less dense substance into a substance of higher density, the light refracts [blank_start]towards[blank_end] the normal. The opposite is true for when the light passes from a substance of higher density to lower density.
- Aaway from
- Bperpendicular to
- Ctowards
- Dparallel to
10Label the eye
- ARones and Cods
- BRetina
- CCilia
- DAqueous humor
- EHood
- FIris
- GPupil
- HCornea
- ILens
- JPupil
- KIris
- LAnterior Chamber
- MAqueous Humor
- NAqueous Chamber
- OAnterior Humor
- PPupil
- QCornea
- RIris
- SRetina
- TOptical Nerve
- UNerve
- VChemical Nerve
- WOptic Nerve
- XPupil
- YLens
- ZChlorea
- AASclera Muscle
11The Iris is the coloured part of the eye which helps control the pupils size and therefore the amount of light let into the eye.
- AVerdadero
- BFalso
12What applies to the pupil?
- AIt is a nerve
- BThe pupil is a muscle
- CThe pupil is coloured
- DIt controls how much light is let into the eye
- EIt is where light exits the eye
- FIt is where light enters the eye
13What is the function of the cornea?
- AThe cornea is a protective and transparent layer at the forefront of the eye which reflects the light
- BThe cornea is a protective and transparent layer at the forefront of the eye which refracts the light upon entry.
- CThe cornea is a coloured layer at the forefront of the eye which refracts the light upon entry.
14The [blank_start]lens[blank_end] is behind the cornea, pupil, and iris which focuses the light onto the [blank_start]retina.[blank_end]
- Aretina
- Bchloric muscle
- Clens
- Dretina.
- Ehumor
- Foptic nerve
15The retina turns the light into chemical signals which travel from the optic nerve to the brain so an image can be formed from its light detecting cells.
- AVerdadero
- BFalso
16Is this the process for vision?
Pupil lets light into eye-> lens changes shape and size to focus light on the retina-> the retina detects the cells and uses electrical impulses-> through the optic nerve to the brain to create a clear image- AVerdadero
- BFalso
17[blank_start]Myopia[blank_end] is short-sightedness. It is caused when the [blank_start]focal point[blank_end] of vision is too short, and the eye is too long. It is cured by a [blank_start]concave[blank_end] lens, as it pushes the focal point back.
- AMyopia
- Bfocal point
- Cconcave
18In the [blank_start]colour spectrum[blank_end] there is , red, orange, yellow, green, blue, [blank_start]indigo and violet[blank_end]. Red light bends the [blank_start]lest[blank_end], opposed to violet which bends the most. The colours we see are always [blank_start]reflected[blank_end], and other colours are [blank_start]absorbed[blank_end].
- Acolour spectrum
- Blight spectrum
- Ctransverse wave
- Dviolet and indigo
- Eindigo and violet
- Fpurple and pink
- Gpink and purple
- Hlest
- Imost
- Jhardest
- Ksoftest
- Lrefracted
- Mabsorbed
- Nreflected
- Oseen
- Preflected.
- Qrefracted.
- Rabsorbed.
- Shidden
19White is all colours absorbed, black is all colours reflected.
- AVerdadero
- BFalso
20Does the pitch or frequency determine the colour of a wave?
- Apitch
- Bfrequency
21Label this wave
- Alongitudinal
- Bcompression
- Crarefaction
- Dwavelength
22On a [blank_start]transverse[blank_end] wave, the [blank_start]crest[blank_end] is the highest point and the [blank_start]trough[blank_end] is the lowest point. The wave is situated on a midpoint or 0 line, which is the position that would be assumed if there was [blank_start]no[blank_end] disturbance. The wavelength is the [blank_start]distance[blank_end] between crests or troughs. Amplitude controls [blank_start]volume[blank_end] of a sound or [blank_start]brightness[blank_end] of a light, it is the height above the midpoint. Frequency is the amount of waves that pass through any given point in one second, controlling the colour of light (faster= violet, slower=red), or the [blank_start]pitch[blank_end] of a sound.
- Atransverse
- Bcrest
- Ctrough
- Dno
- Edistance
- Fvolume
- Gbrightness
- Hpitch
23The electromagnetic spectrum does not include:
- AMacrowaves: electromagnetic radiation with wavelengths ranging from about one meter to one millimeter. Can only be seen under certain technology.
- BGamma rays: most powerful ray which naturally exists in the universe. Has a low frequency, and short wavelength, hence its immense speed. Visible, and damaging to the human eye.
- CInfrared: less damaging than visible light, but more damaging than microwaves. They have a mild wavelength and mild frequency. Can be visible, but only in cool, dark , situations.
- DRadiowave: the least damaging naturally existing ray of light. It has a long wavelength and frequency and is very slow. 99% of the time, invisible.
24The endocrine system:
- AHas glands: including the pancreas, pituitary gland, thyroid, parathyroid, adrenal, pineal, ovaries, and testes.
- BDoes not help with homeostaisis
- CReleases hormones; chemical messengers
- DContains the exocrine system
- EIs not specific
- FRegulates various bodily functions: i.e. growth, metabolism, etc.
25The immune system:
- AIs very weak
- BHas three lines of defence
- CDefends the body from pathogenic diseases.
- DDefends the body from non-infectious diseases
- EIdentifies pathogens but not destroy
- FHas B and T cells
- GIdentifies and destroys pathogens
26The nervous system:
- AUses chemical signals
- Bcontrols and coordinated bodily functions
- CHas 2 categories: centrafical and peripheral
- DHas 2 categories: central and peripheral
- EUses nerves
27The brain and spinal chord are apart of the:
- ACentral Nervous System
- BPeripheral Nervous System
28The role of the brain is to control and regulate bodily functions. It uses the cerebrum for conscious and voluntary actions, the cerebellum for balance and coordination, and the brain stem to connect the brain and spinal chord.
- AVerdadero
- BFalso
29Label this neuron
- Adendrite
- Bnucleus
- Ccell body
- Dmyelin sheath
- Eaxon
- Faxon terminal
30The reflex arc uses a [blank_start]stimulus,[blank_end] receptor, sensory neuron, i[blank_start]nterneuron[blank_end], motor neuron, effector, and response. For example, if you pricked your finger, the stimulus would be a pin, the receptor would be the nerves in the tips of your fingers, the sensory neuron carries the electrical impulses to an interneuron in the [blank_start]spinal[blank_end] chord which then goes to the motor neuron, then the hand muscles as the effector, with the response being to move the hand away.
- Aobject
- Bstimulus,
- Cthing
- Dnsideneuron
- Enterneuron
- Fbrain
- Gt4
- Hspinal
31How do we know that this is a reflex arc and not an involuntary action?
- Athe brain is not involved
- Bslower response
- Crequires a stimulus
- Dslow to adapt
32What are some hormones produced in the endocrine system, with their glands and functions?
- AInsulin/Glucagon- Pituitary gland: Glucagon breaks down glycogen to glucose in the liver. Insulin enables blood glucose to enter cells, where they use it to produce energy.
- BInsulin/Glucagon- Pancreas: Glucagon breaks down glycogen to glucose in the liver. Insulin enables blood glucose to enter cells, where they use it to produce energy.
- CTestosterone- Ovaries: Gives bone strength, and helps with reproduction.
- DMelatonin- Pineal Glands: helps with the timing of your circadian rhythms (24-hour internal clock) and with sleep.
- EAdrenaline- Parathyroid: makes your heart beat faster and your lungs breathe more efficiently.
33Hormones are very specific and as chemical messengers will not work unless they reach their target cell through blood.
- AVerdadero
- BFalso
34[blank_start]Homeostasis[blank_end] is the process of maintaining a constant and stable internal environment. It uses the [blank_start]negative[blank_end] feedback system which is a stimulus, receptor, control, and response to work efficiently. For example, if the person is too hot, their body temp is the stimulus, the [blank_start]receptor[blank_end] is the skin and brain, the control is the thermoregulating parts of the brain, the response is the blood rushes to skin. It uses the [blank_start]nervous[blank_end] and endocrine system to work effectively.
- AHomeostasis
- Bnegative
- Creceptor
- Dnervous
35The nervous system is chemical, slow, and long lasting. The endocrine system is electrical, fact, and slow lasting.
- AVerdadero
- BFalso
36What is a pathogen?
- AA non-infectious unicellular organism
- BAn infectious unicellular organism. Includes, fungi, virus, bacteria.
- CA disease causing organism (mulit or unicellular) Includes, prions, fungi, virus, bacteria, protozoan and macroparasites.
37A disease is anything which [blank_start]disrupts[blank_end] normal human functioning.
- Aallows
- Bdisrupts
38The [blank_start]first[blank_end] line of defence is the [blank_start]chemical[blank_end] and physical barriers. The aim is to prevent [blank_start]entry[blank_end] into the body. Examples of the first line of defence include skin, hair, mucus, saliva, low ph acid in stomach.
- Afirst
- Bchemical
- Centry
39What does the second line of defence do?
- AIs chemical and physical barrier
- BIs a specific line of defence
- CIs non-specific
- DDoes not include the inflammatory process (blood, heat, redness, pain, swelling- encourages more white blood cells to the area)
- EIncludes phagocytes which are types of cells within the body capable of engulfing and absorbing bacteria and other small cells and particles.
- Fuses leukocytes or white blood cells
40The third line of defence:
- Auses leukocytes- B and T cells which are lymphocytes.
- BB-cells are a type of white blood cell that makes infection-fighting proteins called antibodies.
- CT cells locate and destroy pathogens by locking horns with the antigen.
- DPhagocytes are included
- ENon- specific
41The peripheral nervous system includes:
- ASomatic nerves: controls movements, and collects uts information from the 'five senses'
- BAutonomic nerves: unconscious movements such as the heart rate.
42The exocrine system releases secretions through ducts. It is the 'brother' to the endocrine system which uses hormones through blood and target tissues.
- AVerdadero
- BFalso
43· an element.
· a compound
· a mixture of elements
· a mixture of compounds
· a mixture of elements and compounds.
- Aelement
- Belement
- Cmixture of elements
- Dmixture of compounds
- Emixture of elements and compounds
- Fa compound
44What is the electron configuration pattern?
- A2,8,8,3
- B2,8,2
- C2,8,8,2
45You read the periodic table as follows. The groups are [blank_start]vertical[blank_end] rows, the periods are [blank_start]horizontal[blank_end] rows. The groups all react similarly.
- Ahorizontal.
- Bvertical
- Chorizontal
- Dvertical.
46What does the atomic number and weight tell us?
- AThe number of protons and electrons
- BThe number of neurons- aw/an
47Neurons are ? Protons are ? Electrons are ?
- ANeurons are neutral, protons are negative, electrons are positive
- BNeurons are neutral, protons are positive, electrons are negative.
- CNeurons are positive, protons are neutral, electrons are negative.
48The amount of shells tells us the period of an element, the amount of electrons in the valance shell tell us the group.
- AVerdadero
- BFalso
49An ion is an atom or group of atoms with a [blank_start]positive[blank_end] or negative charge. Ions form when atoms [blank_start]lose[blank_end] or gain electrons to obtain a [blank_start]full[blank_end] outer shell:
• metal atoms lose electrons to form [blank_start]positively[blank_end] charged ions (cations)
non-metal atoms gain electrons to form [blank_start]negatively[blank_end] charged ions (anions)- Apositive
- Blose
- Cfull
- Dpositively
- Enegatively
50When you are drawing atoms or ions, do you need to include the protons and neutrons in the drawing if it asks for the electron configuration?
- ANo- unless it asks for you to draw the atom
- BYes- electron configuration means you have to draw the neurons and protons
Información
- Descripción
- 9 Life Sciences Test sobre Science A2, creado por Sabrina Sultana el 12/06/2023.
- Autor
- Sabrina Sultana
- Idioma
- English
- Visitas
- 13
- Etiquetas
- Valoración
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