Zusammenfassung der Ressource
Physics
- particle
model
- solids
- fixed pattern
- cant be
poured
- particles cant flow over
eachother
- cant change shape
- all particles are touching
- No free space
- liquids
- particles flow over
eachother
- no fixed
pattern
- a little bit of free
space
- can change shape
- can be poured
- 75% of particles are touching
- gasses
- no particles are connected/touching
- can change/fill any shape
- more free space
than particles
- can be pored technically but they the air so they
float
- particles can flow over eachother
- no fixed pattern
- Specific Latent Heat
- vaporisation
- how to boil 1kg of the substance
without changing its
temperature
- fusion
- how to melt 1kg of the substance
without changing its
temperature
- Density
- If an object sinks it is because the volume,
mass or weight of the object pushing down is
more than the volume, mass or weight
pushing up.
- If an object floats it is because the
volume, mass or weight of the object
pushing down is less than the volume,
mass or weight pushing up
- Equations
- Kinetic = 1/2 x mass x velocity2
- Work done = force x distance
- Gpe = mass x 10 x height
- Power = work done/time
- Epe = 1/2 x spring constant x extention2
- Fuels
- Non-renewable
- Fossil fuels
- Coal
- Natural gasses
- Oil
- All get burned to heat up things to power things
- Fossil fuels are a highly compressed, ancient once living
matter. A very concentrated form of chemical energy. Can
be used for heating, transport and generating electricity.
- Renewable
- Bio-fuel
- The chemical energy stored in living organisms can be
used for heating, transport and generating electricity.
- Geo-thermal
- Deep underground the earths rocks are naturally very hot due to
radio-activity decay. We can turn their thermal energy into
electricity.
- The sun
- The earth gets heat and light from the sun all the time.
- Wave capture
- The wind blowing on the water makes waves. These waves
have kinetic energy. Using machines that bob up and down
in the waves, this energy can be turned into electricity which
we can use in our homes.
- Neuclear
- Uranium-235 is the fuel that is used to power neuclear fuel. No harmful
gasses are produced, but it produces harmful radiation waste.
- Hydro-electric
- Energy from rivers. The sun powers the water cycle and
HEP uses water falling under gravity to turn turbines,
to make electricity.