Transcript Conversions - Ms. Walters` Blog

Conversions
2. a) What does
1:250 000 mean?
It means that one unit on a map
represents 250 000 units on
Earth’s surface.
Conversions continued
2. b) What does
1:3 000 000 mean?
It means that one unit on a map
represents 300 000 units on
Earth’s surface.
3. a) What does 1 cm
to 0.5 km mean?
One centimetre on the map
represents 0.5 km on Earth’s surface.
4) The direct statement scale of a map
is 1 cm to 35 km. If the map distance
between points A and B is 9 cm, what
is the actual distance?
1 cm = 35 km
(9 x 1) cm = (9 x 35) km
9 cm = 315 km
The actual distance between points A
and B is 315 km.
You try #5 by yourself!
5) The direct statement scale of a map
is 1 cm to 250 km. If two places are 17
cm apart on the map, what is the
actual distance between them?
1 cm = 250 km
(17 x 1) cm = (17 x 250) km
17 cm = 4250 km
The actual distance between the two
places is 4250 km.
Homework:
Page 48 #6 (a, b, c)
*You will need a ruler in order to
measure out the centimeters!