2. Tools
• Volume – the amount of space something occupies
– Graduated Cylinder, meter stick
– Units: L (liquid), cubed (solid)
• Mass – The amount of matter that something is made of
– triple beam balance
– Units: g (gram)
• Length – Measure of distance from one point to another
– meter stick
– Unit: m (meter)
• Force – spring scale
– Units: N (Newton)
3. • Temperature – The measure of how hot
or cold something specifically: the
average kinetic energy of the objects
particles
– thermometer
– Units: K (Kelvin) we use °C (Celsius)
• Time – stopwatch
– Units: sec (seconds)
4. SI – International System
• SI: International system (metric) – used
globally as a standard of measurement
and units so that info can be shared
accurately
• Based on 10, making conversion of units
easier
• We do not measure in standard –
EVER!!
5. Area
• Measure of the surface of an object
• Formula: A=lxw
• all answers must be squared units
• m2
, cm2
, km2
6. Volume
• Formula: V=lxwxh for a solid that you can
physically measure
• Units: cubed (for a solid) m3
,cm3
• OR: water displacement, object is placed in
water and the ending value is subtracted starting
value
• Measured by displacement Formula V = V2 – V1
– Units: mL (mL is never cubed)
• 1 mL=1cm3
• Official units = L – liter
7. Density
• Amount of matter in a given volume
Formula: D=m/v
• Units:
• measured with water displacement – g/mL
• Physically measured (solid) – g/cm3
• Density can not be measured directly, you
must know (find) the mass and the volume
to calculate
