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biology > energy and electrical physics > Flashcards

energy and electrical physics Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

vaporization is

A

liquid to gas

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2
Q

cation is

A

positively charged atom,(like Na+)

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3
Q

what is an electrolyte

A

substance dissolved in water, split into ions

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4
Q

unit of electrical resistance is

A

ohm

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5
Q

unit of electrical power is

A

watt

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6
Q

unit for intensity is

A

amp

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7
Q

unit for frequency is

A

hertz

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8
Q

what is the function of a transformer?

A

change voltage of alternating current to a different voltage?(check accuracy)

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9
Q

anode is…

A

positively charged electrode

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10
Q

anion is …

A

negatively charged atom

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11
Q

cathode is …

A

negatively charged electrode

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12
Q

rubber is an…

A

insulator

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13
Q

direct current is…

A

galvanic current

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14
Q

potential energy is …

A

stored energy

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15
Q

Kinetic energy is…

A

energy of movement

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16
Q

conduction is…

A

movement of thermal energy due to contact b/w atoms

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17
Q

convection is..

A

movement of thermal energy b/c of movement of fluids

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18
Q

radiation is…

A

movement of thermal energy via waves of electromagnetic radiation

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19
Q

direct current

A

flow of e- in one direction only

20
Q

example of DC

A

iontophoresis

21
Q

alternating current

A

oscillating flow of e- in one direction than the other

22
Q

example of alternating current

A

high frequency

23
Q

what is a conductor

A

material that e- flow through easily

24
Q

examples of conductors

A

water that contains ions, copper, gold, silver, aluminum, carbon

25
Q

what are insulators

A

materials that e- dont flow easily.

26
Q

examples of insulators

A

rubber, plastic, glass, wood, cloth

27
Q

7 heat effects

A
  • increase chemical reaction rates
  • increase metabolic rate
  • increased cellular waste products
  • dilated blood vessels
  • tendons become more elastic
  • decreased muscle spasms
  • decreased joint stiffness
28
Q

6 cooling effects

A
  • decreses muscle spasm
  • reduced pain perception
  • decreases swelling
  • slows metabolism
  • surface vasoconstriction
  • reduces bleeding
29
Q

7 mechanical effects

A 
increased lymph flow
decreased muscle fatigue
decreased muscle adhesions
stimulates muscle stretch reflex
sedates nervous system
stimulates reflexes
reduced pain perception
30
Q

effects at the anode(+)

A 
aka iontophoresis.
vasoconstriction
constricting of the skin and pores
slight acidification
superficial nerves are sedated
increased skin absorption of positively charged products
31
Q

effects at cathode(-)

A 
aka. desincrustation
vasoconstriction
softening of the skin and pores
alkalinization
increased nerve sensitivity
sensory pain reduction
increased absorption of negatively charged products
32
Q

capacitor

A

helps stabilize power supply; stores very small amount of electricity, temporarily

33
Q

rectifier

A

converts ac to dc

34
Q

converter

A

changes voltage of incoming current

35
Q

resistor

A

controls the current flow, due to RESISTANCE

36
Q

rheostat

A

type of resistor that can vary its resistance, w/o interruption

37
Q

transformer

A

transfers current b/w two circuits

38
Q

ammeter

A

measures the intensity of a current in a circuit.

39
Q

voltmeter

A

measures the potential difference b/w two points in a circuit.

40
Q

pressure is measured in

A

voltages

41
Q

intensity is measured in

A

amps

42
Q

frequenc is measured in

A

hertz

43
Q

power is measured in

A

watts

44
Q

resistance is measured in

A

ohms

45
Q

ohms law states..

A

current is proportional to voltage and inversely proportional to resistance

46
Q

intensity =

A

I=v/r

biology (23 decks)

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