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Science🔬 > Keywords > Flashcards

Keywords Flashcards

1
Q

Ultrasound

A

Sound that has an ultronic frequency

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2
Q

Mixtures

A

A mixture contains 2 or more different substances that are mingled together but are not chemically combined

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3
Q

Alkali metals

A

React with air and quickly loose their shine when it is exposed to the air

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4
Q

Alkaline metals

A

Any group of elements including:

  • Beryllium
  • calcium
  • magnesium
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5
Q

Elements

A

Are substances which cannot be split up into simpler substances by chemical means

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6
Q

H20

A

Water

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7
Q

C20

A

Carbon dioxide

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8
Q

Mg0

A

Magnesium oxide

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9
Q

Fes

A

Iron sulfrate

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10
Q

Compounds

A

Are formed when 2 or more atoms of different elements combine together chemically

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11
Q

Circulatory system

A

Consists of blood, the heart and blood vessels

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12
Q

What is the normal human body temperature

A

37 degrees

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13
Q

How many litres of blood does the average adult contain

A

5 litres

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14
Q

Plasma

A

Is the straw coloured liquid part of blood. It is responsible for the transport of heat

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15
Q

Red blood cells

A

Carries oxygen from the lungs to the body

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16
Q

White blood cells

A

Fight infection

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17
Q

Platelets

A

Tiny fragments that are responsible for blood clotting

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18
Q

What is sound

A

Sound is a form of energy
It is produced by vibrations
Echoes are reflected sound

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19
Q

What is the difference between the left atrium and the right atrium

A
  • the left ha thicker walls and pumps blood around the body

- the right just pumps blood to the lungs

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20
Q

A solvent

A

A substance that dissolves other materials to form a solution

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21
Q

A solute

A

A substance that dissolves in a solvent

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22
Q

A solution

A

A mixture of a solute and a solvent

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23
Q

An atom

A

Is the smallest particle of an element that still retains the properties of an element

24
Q

A molecule

A

Is the smallest particle of an element

25
Q

A proton

A

Is a sub atomic particle

26
Q

Neutron

A

A sub atomic particle found in the necleus and has no charge

27
Q

Veins

A

Carry blood to the heart

28
Q

Arteries

A

Carry blood away from the heart

29
Q

Capillaries

A

Allows material t flow in and out of the blood

30
Q

The heart

A

Pumps blood around the body

31
Q

Heart disease is caused by

A
  • smoking
  • not exercising
  • not eating healthy
32
Q

The septum

A

A sheet of muscle that separates one side of the heart from another

33
Q

The vena cava

A

Takes good to the right atrium

34
Q

Pulmonary artery

A

Takes bood from the ventricle to the lungs

35
Q

Respiration

A

The release of energy from foods

36
Q

Word equation for aerobic respiration

A

Glucose ➕ oxygen ➡️ energy ➕ carbon dioxide ➕ water

37
Q

Experiment to show there is more exhaled air in carbon dioxide that inhaled air

A

1) place an equal amount of limewater into two test tubes
2) suck air in through tube x
3) breath air out through tube y
4) repeat step 2 + 3 until limewater turns milky

38
Q

Larynx (voice box)

A

Responsible for making sound

39
Q

Rings of cartilage

A

Keeps air tubes open

40
Q

Lungs

A

The breathing organ

41
Q

Intercostal muscle

A

Cause the rib change to move up and down

42
Q

Diaphragm

A

Sheet of muscle that moves up and down during breathing

43
Q

Trachea (windpipe)

A

Allows air to pass in and out of the lungs

44
Q

Bronchus

A

A tube wich cries air from the trachea to the lungs

45
Q

Bronchioles

A

Thin tubes that carry air within the lungs

46
Q

Alveoli

A

Thin air sacks covered in blood vessels

47
Q

Gaseous exchange

A

Occurs when carbon dioxide in the lungs is replaced by oxygen in the alveoli by diffusion

48
Q

Temperature

A

Is a measure of the hotness or coldness of an object

49
Q

Heat

A

Is a form of energy and it can be converted into other forms of energy

50
Q

Solids liquids and gases

A

Expand when heated and contract when cooled

51
Q

Latent heat

A

Is the heat taken in when the substance is changing

52
Q

Conduction

A

Is the method by which heat travels from particle to partcile through a solid

53
Q

Convencation

A

Is the transfer of heat through a liquid or gas

54
Q

Radiation

A

The transfer of heat from a hot object

55
Q

A conducter

A

A substance which allows heat to flow through it easily

56
Q

An insulator

A

A substance which does not allow heat to flow through it easily

57
Q

A saturated solution

A

A solutions that no more can be added to it

Science🔬 (39 decks)

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