To solve these problems, we need to look at the time difference between Greenwich and the other cities using the map provided.
1. Los Angeles
*
Greenwich Time: 1 p.m.
*
Map Check: Look at the column for Greenwich (noon/12:00) and the column for Los Angeles. Los Angeles is 8 hours behind Greenwich (indicated by -8 on the bottom scale).
*
Calculation: 1 p.m. minus 8 hours.
* 1 p.m. is 13:00 in 24-hour time.
* $13 - 8 = 5$.
* So, it is 5:00 in the morning.
*
Result: 5 a.m.
2. Moscow
*
Greenwich Time: 3 p.m.
*
Map Check: Look at the column for Moscow. It is 3 hours ahead of Greenwich (indicated by +3 on the bottom scale).
*
Calculation: 3 p.m. plus 3 hours.
* $3 + 3 = 6$.
*
Result: 6 p.m.
3. New Delhi
*
Greenwich Time: 5 p.m.
*
Map Check: Look at the column for New Delhi. It is 5 hours and 30 minutes ahead of Greenwich (indicated by +5:30 on the bottom scale).
*
Calculation: 5 p.m. plus 5 hours and 30 minutes.
* $5 \text{ p.m.} + 5 \text{ hours} = 10 \text{ p.m.}$
* Add the remaining 30 minutes: $10:30 \text{ p.m.}$
*
Result: 10:30 p.m.
4. New York
*
Greenwich Time: 7 p.m.
*
Map Check: Look at the column for New York. It is 5 hours behind Greenwich (indicated by -5 on the bottom scale).
*
Calculation: 7 p.m. minus 5 hours.
* $7 - 5 = 2$.
*
Result: 2 p.m.
5. Perth
*
Greenwich Time: 9 p.m.
*
Map Check: Look at the column for Perth. It is 8 hours ahead of Greenwich (indicated by +8 on the bottom scale).
*
Calculation: 9 p.m. plus 8 hours.
* From 9 p.m. to midnight is 3 hours.
* We have 5 hours left to add ($8 - 3 = 5$).
* Midnight plus 5 hours is 5 a.m.
*
Result: 5 a.m.
Final Answer:
1.
5 a.m.
2.
6 p.m.
3.
10:30 p.m.
4.
2 p.m.
5.
5 a.m.
Parent Tip: Review the logic above to help your child master the concept of time zone worksheet 4th.
