1-100 year 10 questions i didnt get correctly Flashcards

1
Q

What is dissipated energy?

A

Energy lost to the surroundings/environment

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2
Q

what is the equation for efficiency?

A

efficiency = energy transferred usefully/total energy input

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3
Q

What is infared light?

A

Part of the electromagentic spectrum that has a wave length longer than visible light

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4
Q

Name two types of thermal insulation in the home?

A

Double glazing, loft insulation

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5
Q

What is specific heat capacity measured in?

A

J/Kg degrees celsius

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6
Q

What is the equation linking energy mass SHC and temp change?

A

energy = mass x SHC x temp change

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7
Q

The advantages of using oil and coal as an energy source?

A

reliable

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8
Q

What is carbon capture and storage?

A

capturing carbon before its emitted and store underground

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9
Q

Advantage of biofuels?

A

store underground, reknewable

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10
Q

Advantage of nuclear power?

A

energy dense, doesnt produce polluting gas

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11
Q

Disadvantage of nuclear power?

A

Toxic waste produced, radioactive waste hard to store

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12
Q

Disadvantage of geothermal energy?

A

Only available in specific areas

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13
Q

Examples of transverse waves?

A

Light and s waves

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14
Q

What is an ionizing wave

A

Ionizing radiation is any type of particle or electromagnetic wave that carries enough energy to ionize or remove electrons from an atom

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15
Q

What is frequency measured in

A

Hz hurtz

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16
Q

What is the equation for wave frequency

A

wavelength/time period

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17
Q

What can infared light be used for

A

tv remotes and heating

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18
Q

What can visible light be used for

A

vision and optical cables

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19
Q

What can gamma rays be used for

A

sterilzation and radiotherapy (medical treatments)

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20
Q

Name 3 ionizing waves

A

Ultra violet, gamma, xray

21
Q

How can radio waves be produced

A

oscillations in electric circuits

22
Q

Where do gamma rays originate from

A

charges in nucleus of atoms

23
Q

equation for the magnification of a lens

A

image height/actual height

24
Q

what is the focal length

A

distance from lens to the principle focus

25
Q

What is a real image

A

one that can be shown on a screen

26
Q

whats a virtual image

A

one that does not exist only appears

27
Q

what type of image does a convex lens produce

A

virtual or real

28
Q

What type of image does a concave lens produce

A

virtual

29
Q

What is the term for reflection off a smooth surface

A

specular reflection

30
Q

term for reflection off a rough surface

A

diffuse reflection

31
Q

how do colour filters work

A

absorb certain wave lengths (and colour) and transmitting other wavelengths (and colours)

32
Q

What is the measurement of gravity on earth

A

9.81 N/kg

33
Q

Weight equation

A

weight = mass x gravity

34
Q

Work done equation

A

work done = force x distance

35
Q

What is hookes law

A

the extension of a spring is directly proportional to the force applied to it

36
Q

hookes law equation

A

force = spring constant x extension

37
Q

What is terminal velocity

A

The max speed at which an object falls (downward force)

38
Q

WHat is the pressure equation

A

pressure = force / area

39
Q

What is newtons first law

A

an object that is at rest = at rest an object that is in motion = stays in motion with the same speed and in the same direction unless acted upon by an unbalenced force

40
Q

Whats newtons second law

A

acceleration of an object is proportional to the resultant force acting on the object and inversely proportinal to the mass of object

41
Q

whats newtons third law

A

when 2 objects interact the forces they exert on one another are equal and oppisite

42
Q

What are the units used to measure acceleration

A

m/s squared

43
Q

What is the equation for acceleration

A

acceleration = change in speed/time

44
Q

pressure of a liquid equation

A

pressure = height of column x density liquid x GFS

45
Q

What is the equation for force

A

force = mass x acceleration

46
Q

What makes up the stopping distance of a veichle

A

thinking distance and braking distance

47
Q

What is the momentum equation

A

momentum = mass x velocity

48
Q

equation for calculating the size of a moment if a force

A

moment = force x perpendicular distance from pivot