physics year 10

?
  • Created by: _yada
  • Created on: 27-11-16 16:52
name 7 energy stores
elastic potential, magnetic, kinetic, chemical, thermal, electrostatic, gravitatinal potential
1 of 74
name 4 ways energy is transferred
heating, radiation, electrical current flowing, mechanical force doing work
2 of 74
what is a specific heat capacity
is the amount of energy required to change the temperature of one kilogram of the substance by one degree celcius
3 of 74
what is the equation to work this out
change in energy= mass X specific heat capacity X change in temp.
4 of 74
name 3 factors that can effect the amount of energy in an objects thermal store
mass, temperature, material
5 of 74
what does renewable mean
an energy source which is replenished as it is being used
6 of 74
give 4 non-rewable energy sources
coal, oil, gass, nuclear
7 of 74
give 7 renewable energy sources
bio fuel, wind, water waves, hydroelectric, the sun, tides, geothermal
8 of 74
how do you work out the efficiency
useful energy out over total energy in
9 of 74
where is wasted energy transferred
to the thermal/internal store of its surroundings
10 of 74
what is conduction
energy transferred through collisions between neighbouring particles. only takes place in solids
11 of 74
give an example of conduction
heating elements/filaments. Pots and pans on a hub
12 of 74
what is convection
energy transferred through rising regions of a fluid. takes place in liquids and gases.
13 of 74
give an example of convection
central heating warming the air in a room. hot water taken from the top of a boiler
14 of 74
what is radiation
energy tranferred by electromagnectic radiation. takes place through free spaces
15 of 74
give an example of radiation
energy reaches us from the sun or heating food under a grill
16 of 74
what is evaporation
energy transferred away from surface of a liquid by escaping high energy particles
17 of 74
give an example of evaporation
cooling of a hot drink or cooling of an athlete through sweating
18 of 74
what is condensation
energy transferred to a solid by a gas forming a liquid on the surface
19 of 74
give an example of condensation
misting of mirrors and windows or warming of cold drinks can
20 of 74
advantages and disadvantages of coal
advantages: highly reliable Disadvantages: is non-renewable, produces CO2 and SO2 which are bad for the enviroment
21 of 74
advantages and disadvantages of oil
advantage: highly reliable Disadvantage: non-renewable, produces CO2 and SO2
22 of 74
advantages and disadvantages of oil
andvantage: high reliability and fast start up time Disadvantage: non-renewable, produces CO2
23 of 74
advantages and disadvantages of bio-fuel
advantages: renewable and high reliability Disadvantage: slow start up time, produces CO2
24 of 74
advantages and disadvantages of nuclear
andvantages: doesnt produce any waste gasses, high reliability Disadvantages:
25 of 74
Electricity- how can some insulating materials become charged
when they are rubbed together
26 of 74
what happens to the electrons when objcts are charged
they are transferred
27 of 74
what is the force between 2 charged objects called
non-contact force
28 of 74
what happens to the bigger the charge
the bigger the force
29 of 74
what happens the closer you get
the stronger the force
30 of 74
what does any charged object produce around it
an electric field
31 of 74
what happens when the field lines are closer together
the field is stronger
32 of 74
when does sparking occur
when the gap between a charged obect and another object is small and the electrical field strength is large
33 of 74
what is the electric current
is the rate of flow of charge ( in one sec.)
34 of 74
what is the equation for charge
Q= IT
35 of 74
what does the Q, I and t stand for
Q: charge, I:current, t: time
36 of 74
what is used to measure the current flowing in a circuit
ammeter
37 of 74
how must it be connected
in series
38 of 74
what is the potential difference
work done per coulomb of charge that passes between points
39 of 74
what is the resistance
measures how hard it is for the current to flow through a component
40 of 74
what is used to measure the potential difference
Voltmeter
41 of 74
how is it connected in a circuit
in parallel
42 of 74
what is the equation to work out the voltage
V=IR
43 of 74
what does ohms law suggest about the current through a resisitor at a constant temperature
that it is directly proportiaonal to the potential difference across the resistor
44 of 74
what factors affect the resistance of a piece of wire
length, diameter, material or temperature
45 of 74
what is th current rule for a parallel circuit
the sum of the current going into a junction equals the sum of the current going out of the junctions
46 of 74
what is the current rule for a series circuit
the current is the same in each component
47 of 74
Forces- what is displacement
is the distance in a given direction
48 of 74
what is a vector
is a physical quantity which has size(magnitude) and direction
49 of 74
what is a scalar
has size(magnitude) but no direction
50 of 74
how can a vector quantity be represented
by an arrow in the direction of the vector
51 of 74
what is velocity
speed in a given direction
52 of 74
what do you need to have in order to have the same velocity
the same speed in the same direction
53 of 74
how do you work out acceleration
A= change in velocity over time
54 of 74
how do you work out the weight
weight=massXgravotational pull
55 of 74
what is equilibrium
when opposing forces are equal/balanced
56 of 74
what happens to an object when the resultant force is 0
the object stays at rest or remains at the same speed and direction
57 of 74
what happens when the resultan force is greater than 0
the speed or direction of the object will change
58 of 74
what is Newtons second law
Force=massXacceleration
59 of 74
what happens when the resultant force in the direction the object is moving
accelerate
60 of 74
what happens when the resultant force in the opposite direction to motion
deceleration
61 of 74
what is the gravotational pull on the earth
10
62 of 74
Waves- what is energy
what waves transfer
63 of 74
what is the wave speed
the speed at which energy is transferred
64 of 74
what is the wave length
the distance from one peak to the next peak
65 of 74
what is a period
the time for one complete wave to pass a point
66 of 74
what is a frequency
the number of complete waves passing a point each second
67 of 74
which is an amplitude
the maximum displacement of a point on a wave away from its undisturbed position
68 of 74
what is a transverse wave
a wave where the oscillations are perpendicular to the direction of energy transfer
69 of 74
what is a longitudinal wave
a wave where the oscillations are parrallel to the direction of energy transfer
70 of 74
what is compression
the part of a longitudinal wave where the particals are closest together
71 of 74
what is rarefaction
the part of a longitudinal wave where the particals are furthest apart
72 of 74
how do you work out the period
T=1 over frequency
73 of 74
how do you work out the wave speed
frequencyXwavelength
74 of 74

Other cards in this set

Card 2

Front

name 4 ways energy is transferred

Back

heating, radiation, electrical current flowing, mechanical force doing work

Card 3

Front

what is a specific heat capacity

Back

Preview of the front of card 3

Card 4

Front

what is the equation to work this out

Back

Preview of the front of card 4

Card 5

Front

name 3 factors that can effect the amount of energy in an objects thermal store

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

Physics
See all Physics resources »See all energy, forces, waves, electricity resources »