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Cards (22)
what Is weight measured in
Newton meters
What are Balanced forces ?❓❓
When two forces are the same strength but working in opposite directions
What are unbalanced forces ?❓❓❓
When two forces work in
opposite
directions directions that are not the
same strength
What is the definition of friction❓❓
friction
is a
force
caused by two things
rubbing
together
What is air resistance and water resistance ❓❓
They are a type of
friction
What is
upthrust
⬆️❓❓
Upthrust
pushes
things
up.
things float in water because of
upthrust
What are some examples of
non
contact
forces ❓❓
Magnetism🧲
and
gravity
and
static
electricity ⚡️
What are some example of
contact
forces❓❓❓
Friction
and air
resistance
and
water
resistance
💧 and
upthrust
⬆️
what is
density
❓❓❓
Density is the
mass
of a certain
volume
of something and it can be calculated with this formula -> DENSITY = MASS / VOLUME (g\cm3
What are some properties of light 💡
Travels in
straight lines
and light travels faster than
sound
Light travels at the speed of
300 million
m/s
the angle of incidence =
angle of reflection
Definition of luminous
Gives off its own
light
Definition of
transparent
See through / clear image
Definition Of translucent
Allows some
light through
but not a
clear image
Definition of opaque
Allows
no light through
and
casts
a
shadow
What is refraction❓❓❓❓
When light goes from a
less
dense to
more
dense medium at an angle : light
appears
to
bend
but it just
changes direction
🧭
what is reflection ❓
When
light rays
hit a surface and
bounce
off
what is dispersion 💡
the splitting of
white
light in to a
spectrum
of colours
What are some qualities of a Low pitch sound wave
long
thick
loose
string
what are some qualities of a high pitch sound wave
short
thin
tight
string
What is the speed of sound
330
m/s