physics paper 1 Flashcards
(19 cards)
transverse waves
oscillations perpendicular to the direction of energy transfer
longtidual waves
oscillating parallel to the direction of energy transfer
energy stores
thermal
kinetic
gravitational potential
elastic potential
chemical
magnetic
electrostatic
nuclear
energy transfers
mechanically
electrically
heating
radiation
specific heat capacity
insulation reduces energy loss
energy transferred from hotter to cooler regions
national grid
power station
step-up transformer
transmission cables
step-down transformer
homes
non renewable resources
eventually used up
coal
oil
natural gas
✅reliable
❌ releases CO2
renewable resources
solar
wind
biofuels
✅ low pollution
❌ unreliable
plugs
brown - live
blue - neutral
green/yellow - earth
alternating current
current changes direction repeatedly
changes of state
energy is transferred
temperature stays constant
specific latent heat
energy needed to change state of 1kg of a substance without changing temp
alpha particle
helium nucleus (2p+2n)
highest ionising power
+2 charge
beta particle
electron
-1 charge
middle ionising power
gamma particle
electromagnetic wave
0 charge
low ionising power
scalar
quantity with magnitude only
vector
quantity with magnitude and direction
RP resistance of a wire
ammeter in series to wire
crocodile clips on wire
voltmeter placed in parallel
measure current and voltage
move crocodile clips in 10cm’s
repeat and put results in a table
IV characteristics
measure current w ammeter
measure voltage w voltmeter
use variable resistor to change resistance
record new values of current and voltage
repeat for several values
reverse connections on cell/battery for negative values of current/pd
