Transcript Measurement Game

BASE UNIT?
Rules
1. Each student is assigned a base unit out of 3 possible
ones, kg, m, s. Note that the other 4 base units, A, mol,
K and cd are not given because they will be covered in
later topics.
2. For a class of 25, the following distribution is
recommended:
a. kg – 5
b. m – 10
c. s – 10
3. Students will be asked to form groups when shown a
Physical Quantity. Those with a negative power, e.g.
the two “seconds” in kg m s–2, will have to sit/squat
down.
4. Students who did not form a group will be ousted and
the last few left in the game will win prizes.
BASE UNIT?
ARE YOU READY?
Form the base units for
FORCE
Hint:
Force  Mass  Accelerati on
Answer:
[F]  [m]  [a]
 kg  m s
 kg m s
2
2
What is the base unit equivalent for
the Pascal?
Hint:
Force
Pressure
Area
Answer:
[P]  [F] [A]
 kg m s
 kg m
2
1
s
m
2
2
Form the base units for
MOMENTUM
Hint:
Momentum  Mass  Velocity
Answer:
[p]  [m]  [v]
 kg  m s
 kg m s
1
1
Form the base units for
both DENSITY & FREQUENCY
Hint:
Density  Mass/Volum e
1
Frequency 
Time for 1 Oscillation
Answer:
[  ]  [m]/[V]
 kg m
3
[f ]  1/[t]
s
1
Form the base units for
the following expression:
Hint:
mr
2
2
where  
T
m is mass
r is radius of orbit
T is time taken for 1 orbit
Answer:
[mr  ]  kg m s
2
-2