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43 Terms
friction
a force that works on rough ground.
air resistance
It slows down things in contact with air.
weight
a force that drags things down depending on their mass
mass
how heavy something is without gravity affecting it
gravitational field strength
the strength of gravity in an area
distance
how far something travels
speed
how fast something travels
time
how long it takes to do something
resultant force
the result of the forces
force
a push or pull thing that affects objects
contact force
a force that affects things that are touching
non-contact force
a force that affects objects that are in a specific range
push force
a driving force that moves something along
pull force
a force that opposes the driving force. cannot make the object move, but only slows it down.
trundle wheel
a device for measuring meters
newtons
what you measure force in
n/kg
what you measure gravitational field strength in.
reaction
the ground pushing back up as weight pushes you down
newton meter
a tool for measuring newtons
kg
what you measure mass and weight in
m/s
what you measure speed in
seconds
what you measure time in
30 kg
weight of a child
a plane pushing forwards
10000 newtons
gravitational field strength of earth
10 n/kg
upthrust
water pushing up on a floating object
metres
what distance is measured in
about how long one step is
1 metre
plant cell
a cell in a plant
cell membrane
the “skin” around a cell
cell wall
a wall around the cell that is only found in plant cells
chloroplast
an organelle that is green and does photosynthesis
organelle
a part that makes up a cell
tissue
a group of cells
organ
a group of tissues
organ system
a group of organs
root hair cell
a type of plant cell that absorbs nutrients
{ ..…………o..…………0…………… }
{ ………………..0……………o…….. }
{ ………..o…………0……………….. }
a plant cell
— — —
( ….0.....)
— — —
an animal cell
red blood cell
A type of animal cell that carries oxygen. It has no nucleus!
nerve cell
an animal cell that communicates through chemical and electrical messages
specialised cell
a type of cell designed to perform a specific duty
circulatory system
the organ system that controls blood moving round the body
Note 
Flashcards (25)