1.) an object  in motion stays in motion unless acted on by a foce

2.) F=ma

3.)for every force there is an equal/opposite reaction

*The orderly plan that scientist uses

1.)Problem -?

2.) Research

3.)Hypothesis

4.) Experiment

5.) Collect and Analyze Data

6.) Conclusion

7.) Repeat

-Independent/Manipulative: What you change/what you are testing

-Dependent/Responding: Your results/getting changed

-Control/Constants: Stays the same - many of them

Qualitative - Description

Qualitative - Numbers

Pessure

*Pressure = force/areaa

*Units - Pascals

*Moves from high concentration to low concentration

Volume

*The amount of space matter occupies

*3 ways to find volume:

-lxwxh - solids

- Meniscus: the top of a liquid that has a depression in the center) - liquid

-Water displacement - liquid

*Force - push/pull - motion

*Fluid - Liquid/gas/not a solid/pour

*Air Pressure

*Water Pressure

*Pressure:

-P=Force/area

-Units - pascals

-moves from high concentration to low concentration

*Low pressure - less particles pushing on you

*High pressure - more particles pushing on you

*The amount of particles in an area

*How tightly packed

*Every substance has a set density

*D=mass/volume  (heart split in half)

*Units - g/m(liquid/gas) g/cm³ (solids)

*The ability to sink or float

If suntances' density is less than the substanc it is in it will float

*Density of water - 1g/mL

-less then 1 - float

-more than 1 - sink

*Buoyant force 

*The attack of the shower curtain

*When a fluid is moving fast - low pressure formed

*Shower - low pressure inside (because of water

-high pressure outside

*Pressure moves from high to low

*Going up

*Airplane

*Wind moves quickly over the top of the wind - low pressure

-high pressure under the wing

*High pressure to low pressure - plane go up

Drag

*Friction casued when an object moves into the air

*Turbulence - air moves too sharp or it flows off the wings the wrong way

*Water displacement (volume - water goes up)

*Principle - an object is immersed in a fluid is buoted up by a force equal to the weight of the fluid displaced by the object

Water Displacment

*How fast/slow something is moving

*Speedometer - measures speed (mph)

*km/hr or m/s

*s=d/t

*d=st

*t=d/s

Odometer - measures distance

Velocity (Vector)

*Speed in a given direction

*Vector number - answer and a direction

*v=d/t

*Speed that stays the same

*Speed at a giveen instant time/speed

*Speedometer/radar

Average Speed

*To increase speed

*a=Vf-Vi/t

*To decrease speed

*a=Vf-Vi/t

*Negative answer most of the time

*Cause motion

*Push/pull on an object

*F=ma

*The amount of matter in an object

*Tool - TBB

*kg/Newtons

*Inertia  - resistance to change

*ma or mg

*g=acceleration due to gravity (9.8 m/s)

*How much mass in an object - GRAVITY

*weight is a force (gravity)

*Force that poopses motion

*When 2 objects rub together - produces heat

*Energy cannot be created or destroyed it can only change form

*Energy transfer - work

*Work out put/ work in put

*How well something works

*Transfer of energy move in order for work to be done

*units - Joules (j)

*w=fd

*f=w/d

*d=f/w

*The amount of work in a given time

*Units - watts

*p=w/t

*w=pt

*t=w/p

*p=fd/t

*Can't collect

*Ex: Light/sound - travel in waves

Potential Energy

*Position

*Stored

*units - joules

*PE=mgh

*PE=wh

*Motion

*units - joules

*KE=mv²/2

*Make work easier

*Compound/complex - more than one simple machine together

*6 simple machines

*Increased distance traveled, but les force is needed

*Ramp/stairs

*Mechanical Adantage -

length of ramp/height of ramp

*An inclined plane that moves through things

*Thin at one end and think on one end

*Ex: nail/doorstop

*SameMA (machanical advantage) as inclined plane

*inclined plane wrapped around a cylinder/pole

*MA - closer the threads are

*A rigid bar that rotates about a fixed point (Fulcrum)

*3 classes of levers are based on the fulcrum, inforce (effort force)-effort - outforce (resistance force) - load

*Ex: wheel and barrow/broom/crow bar/legs/arms/scissors

*MA - distance of fulcrum to in force/distance of fulcrum to out force

*One large wheel - one small wheel (axle)

*Rotating around a fixed point

*MA - radius of wheel/radius of axle

*Ex: Door knob/screw driver

*A grooved wheel with a rope around moves around a fixed point

*MA - count rope sections except the one you pull