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science revision - Coggle Diagram
science revision
ZEKE- says
efficiency equation
Energy efficiency (%) = useful energy output(j) / total energy input(j) x 100
osmosis
the net movement of water molecules from an area of high water concentration to an area of low wotah concentration through a semipermeable membrane passively
active transport
the movement of particles from an area of low concentration to an area of high concentration using energy
gasses
power
Power (w) = work(j) / time (s)
Power (watts) = Current(amphs) x Potential Difference (volts)
Equations
elastic potential energy
Ee = ½ x K x E2
Ee joules elastic potential energy
K spring constant n/m
Extension meters
specific heat capacity
Change in energy (j)= mass(kg) x specific heat capacity x temp change
power
Power (w) = work(j) / time (s)
Power (watts) = Current(amphs) x Potential Difference (volts)
kinetic energy
Ek = ½ x M x V2
Ek = kinetic energy
M = mass (kg)
V = velocity (m/s)
gravitanional potential energy
Ep = M x G x H
[E]nergy in joules
[M]ass in kg
[G]ravitational field strength 10N/kg
[H]eight in meters
Biology
mitosis
Interphase
dna duplicates
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis
Osmosis
the net movement of water molecules from an area of high water concentration to an area of low wotah concentration through a semipermeable membrane passively
hypertonic
hypotonic
diffusion
The spreading and movement of particles, from a high concentration to a low concentration gradient. Gases or liquids.
the rates of diffusion are effected by surface area tempeture and concentraton gradient
Active transport
Within the human body
Villi and lungs
The villi and lungs are adapted for active transport, they are long and thin to increase their surface area. They then have one-cell thick membranes to keep them on the scale of solvents. Finally, they maintain a steep concentration gradient.
Within plants
For plants to take up and absorb mineral ions, plant ions are moved into the root hairs within the plant. These then create a higher concentration within the plant than the dissolved solvents in the soil. Active transport then occurs due to the plant maintaining a steep concentration gradient, and the ions are absorbed.
the movement of particles from an area of low concentration to an area of high concentration using energy
Requires energy!!
Physics
energy stores
magnetic, thermal, elastic potential, gravitational potential, kinetic, chemical, nuclear, electrostatic.
energy tranfers
mechanical, electrical, heating, radiation
Equations for circuits
Current = Charge*Time
Current = PD/resistance
Power=Current 2 x Resistance
Chemistry
history of periodic table
https://www.bbc.co.uk/bitesize/guides/zfn9q6f/revision/1
groups of periodic table
group 1
alkali metals: they are highly reactive and have one electron in their outer shell very soft metals and get more reactive as you go down the group
group 7
halogens: highly reactive and have on less than full electrons in their outer shell and get less reactive as you go down the group
transition metals
maluable strong ductile less reactive good conductors and solid (except mercury)
group 0
nobel gases: they are inert they are unreavtive and have a full outer shell of electrons
Websites
https://phet.colorado.edu/en/simulations/filter?subjects=work-energy-and-power&type=html&sort=alpha&view=grid
https://ankiweb.net/about
https://app.senecalearning.com/login
