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Y8 Science Synoptic Revision > Y8 Synoptic Revision > Flashcards

Y8 Synoptic Revision Flashcards

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Biology 101 flashcards
1
Q

Name 5 Food Groups

A

Carbohydrates, Fats, Proteins, Minerals, Vitamins

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2
Q

Which organ system breaks down food and absorbs it into the blood?

A

Digestive System

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3
Q

Name 3 organs in the digestive that food passes through

A

Mouth, Oesophagus, Stomach, Small Intestine, Large intestine

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4
Q

Name 2 organs that are part of the digestive system that food does not pass through

A

Pancreas, Liver, Gall Bladder

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5
Q

Describe what role enzymes play in digestion

A

They break down large molecules such as starch into smaller molecules so that they can be absorbed into the bloodstream.

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6
Q

Why is protein important in a healthy diet?

A

Proteins are used for growth and repair

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7
Q

Arteries carry blood __________ from the heart

A

Away

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8
Q

Veins carry blood __________ the heart

A

Towards

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9
Q

The body system that delivers oxygen and glucose to your cells is called the …………………………. system

A

Circulatory

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10
Q

What is the word equation for aerobic respiration?

A

Glucose+Oxygen —> Carbon dioxide+ Water + ‘Energy’

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11
Q

What substance, produced during anaerobic respiration can cause cramp?

A

Lactic acid

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12
Q

Put these organs into the order in which air passes through them during breathing in: Alveoli, Nose, Bronchi, Trachea, Bronchioles

A

Nose, Trachea, Bronchi, Bronchioles, Alveoli

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13
Q

Name 3 harmful substances in cigarette smoke.

A

Tar, Nicotine, Carbon monoxide

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14
Q

The male sex cell (gamete) is called ……………

A

Sperm

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15
Q

The female sex cell (gamete) is called ………………

A

Egg or Ovum

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16
Q

When the nucleus of a sperm cell joins with the nucleus of an egg cell this is called……………………

A

Fertilisation

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17
Q

After fertilisation the fertilized egg divides to become a ball of cells called the ………………………….

A

Embryo

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18
Q

The organ that attaches the foetus to the uterus lining is called ………………………..

A

The placenta

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19
Q

An average human pregnancy lasts………..

A

9 months

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20
Q

The 3 states of matter are…….

A

Solids, Liquids & Gases

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21
Q

What is the name given to the way that heat travels through solids (especially metals)?

A

Conduction

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22
Q

Which method of heat transfer involves a hot liquid or gas becoming less dense and rising?

A

Convection

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23
Q

Materials which do not allow heat energy to travel through them easily are called …………………………..

A

Thermal insulators

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24
Q

What is an element?

A

An element is a substance that only contains one type of atom.

25
Q

What is the difference between a mixture and a compound?

A

In a compound the different types of atom are chemically joined, whereas in a mixture they are not.

26
Q

Air is an example of a

A

Mixture

27
Q

Sodium Chloride is an example of a

A

Compound

28
Q

The _________________ lists all the elements in order of atomic number

A

Periodic Table

29
Q

Sand and water are best separated by which method?

A

Filtering

30
Q

Salt can be obtained from sea water by which method?

A

Evaporation

31
Q

Pure water can be obtained from sea water by which process?

A

Distillation

32
Q

Coloured dyes can best be separated using which process?

A

Chromatography

33
Q

An acid has a pH that is

A

Lower than 7

34
Q

An alkali has a pH that is

A

Higher than 7

35
Q

An object that produces light is called …………..

A

Luminous

36
Q

An object that does not allow light to pass through it is called …………

A

Opaque

37
Q

An object which allows light through so that a clear image can be seen is called ………….

A

Transparent

38
Q

An object which allows some light through it such as tissue paper is called ……….

A

Translucent

39
Q

Angle of incidence =

A

Angle of reflection

40
Q

When light bends when it enters a denser material this is called ……….

A

Refraction

41
Q

White light ………..

A

Is a mixture of colours

42
Q

The order of the colours in the spectrum is …….

A

Red, Orange, Yellow, Green, Blue, Indigo, Violet

43
Q

A red object appears red because it ……

A

Reflects red light but absorbs all the other colours

44
Q

The three primary colours for light are …….

A

Red, Green and Blue

45
Q

A green filter only lets …………….. light to pass through

A

Green

46
Q

A red shirt will appear what colour in green light?

A

Black

47
Q

Which travels faster, light or sound?

A

Light travels about a million times faster than sound

48
Q

The part of the eye that detects light and sends an electrical signal to the brain is the ………

A

Retina

49
Q

What is the closest value to the speed of sound in air? 30m/s, 300m/s, or 3,000m/s

A

300m/s

50
Q

The range of human hearing is from about 20Hz to about what higher frequency? 200Hz, 2,000Hz, or 20,000Hz

A

20,000Hz

51
Q

What are very high frequency sounds that humans cannot hear called?

A

Ultrasound

52
Q

A device that turns sound energy into electrical energy is called a …………..

A

Microphone

53
Q

An object which turns electrical energy into sound is called a …………..

A

Speaker

54
Q

The part of the ear that first converts sound into vibrations is the …………

A

Ear drum

55
Q

Which part of the ear turns vibrations into an electrical signal?

A

Cochlea

56
Q

A high pitched sound as a ……………… Wavelength

A

Short

57
Q

A low pitched sound has a ……………. frequency

A

Low

58
Q

In an experiment results are usually repeated to increase ………

A

Reliability

Y8 Science Synoptic Revision (1 decks)

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