Time Difference and Longitudes 1

Years

Try VividMath Premium to unlock full access

Start Free Trial

Lets see your results!

Points

Score

Time

Retry Quiz

Answered
Review

Question 1 of 5

What time difference will

$86°$ of longitude make?

1. $5$ hours $44$ minutes
2. $3$ hours $54$ minutes
3. $5$ hours
4. $3$ hours

Question 2 of 5

What time difference will

$170°$ of longitude make?

1. $12$ hours
2. $8$ hours
3. $11$ hours $20$ minutes
4. $8$ hours $35$ minutes

Question 3 of 5

3. Question
Find the time difference between the following longitudes:

$145°E$

$97°E$
- (3) hours (12) minutes
Hint

Help Video
Correct

Keep Going!
Incorrect
Need Text
Play
Current Time 0:00
/
Duration Time 0:00
Remaining Time -0:00
Stream TypeLIVE
Loaded: 0%
Progress: 0%
0:00
Fullscreen
Video Acceleration:
On
Off

00:00
Mute
Playback Rate
1x
2x
1.5x
1.25x
1x
0.75x
0.5x
Subtitles
subtitles off
Captions
captions off
English
Chapters
Chapters

The prime meridian is a line of longitude at $0°$

On the opposite side of the prime meridian lies the $180°$ meridian.

Finding the Time Difference

$1°$ of longitude to the west $=$ subtract 4 minutes (West = lest)

$1°$ of longitude to the east $=$ add 4 minutes (East = beast)

First, draw a rectangle with the Prime Meridian and the two longitudes

Since both longitudes are to the east, draw the line for the Prime Meridian first

The prime meridian is also called Greenwich Mean Time (GMT) or Coordinated Universal Time (UTC)

Draw a line that connects the two longitudes

This line represents a minus sign, which means we must get the difference between the two longitudes

$145°-97°$ $=$ $48°$

Finally, solve for the time difference by multiplying $4$

$48°$ $xx4$ $=$ $192$ minutes

$=$ $3$ hours $12$ minutes

Hence, the time difference between $145°E$ and $97°E$ is $3$ hours $12$ minutes

$3$ hours $12$ minutes
Question 4 of 5

4. Question
Find the time difference between the following longitudes:

$32°W$

$27°E$
- (3) hours (56) minutes
Hint

Help Video
Correct

Fantastic!
Incorrect
Need Text
Play
Current Time 0:00
/
Duration Time 0:00
Remaining Time -0:00
Stream TypeLIVE
Loaded: 0%
Progress: 0%
0:00
Fullscreen
Video Acceleration:
On
Off

00:00
Mute
Playback Rate
1x
2x
1.5x
1.25x
1x
0.75x
0.5x
Subtitles
subtitles off
Captions
captions off
English
Chapters
Chapters

The prime meridian is a line of longitude at $0°$

On the opposite side of the prime meridian lies the $180°$ meridian.

Finding the Time Difference

$1°$ of longitude to the west $=$ subtract 4 minutes (West = lest)

$1°$ of longitude to the east $=$ add 4 minutes (East = beast)

First, draw a rectangle with the Prime Meridian and the two longitudes

Since one longitude is to the west and the other is to the east, the Prime Meridian should be in the middle

The prime meridian is also called Greenwich Mean Time (GMT) or Coordinated Universal Time (UTC)

Draw a line that connects the two longitudes

This represents a plus sign, which means we must get the sum of the two longitudes

$32°+27°$ $=$ $59°$

Finally, solve for the time difference by multiplying $4$

$59°$ $xx4$ $=$ $236$ minutes

$=$ $3$ hours $56$ minutes

Hence, the time difference between $32°W$ and $27°E$ is $3$ hours $56$ minutes

$3$ hours $56$ minutes
Question 5 of 5

5. Question
Find the time difference between the following cities:

Melbourne $(38°S,145°E)$

Johannesburg $(26°S,28°E)$
- (7) hours (48) minutes
Hint

Help Video
Correct

Excellent!
Incorrect
Need Text
Play
Current Time 0:00
/
Duration Time 0:00
Remaining Time -0:00
Stream TypeLIVE
Loaded: 0%
Progress: 0%
0:00
Fullscreen
Video Acceleration:
On
Off

00:00
Mute
Playback Rate
1x
2x
1.5x
1.25x
1x
0.75x
0.5x
Subtitles
subtitles off
Captions
captions off
English
Chapters
Chapters

The prime meridian is a line of longitude at $0°$

On the opposite side of the prime meridian lies the $180°$ meridian.

Finding the Time Difference

$1°$ of longitude to the west $=$ subtract 4 minutes (West = lest)

$1°$ of longitude to the east $=$ add 4 minutes (East = beast)

First, draw a rectangle with the Prime Meridian and the two longitudes of each city

Since both longitudes are to the east, draw the line for the Prime Meridian first

The prime meridian is also called Greenwich Mean Time (GMT) or Coordinated Universal Time (UTC)

Draw a line that connects the two longitudes

This line represents a minus sign, which means we must get the difference between the two longitudes

$145°-28°$ $=$ $117°$

Finally, solve for the time difference by multiplying $4$

$117°$ $xx4$ $=$ $468$ minutes

$=$ $7$ hours $48$ minutes

Hence, the time difference between Melbourne and Johannesburg is $7$ hours $48$ minutes

$7$ hours $48$ minutes

$360°$	$=$	$24$ hours
$360°$ $-:24$	$=$	$24$ hours $-:24$	Divide both sides by $24$
$15°$	$=$	$1$ hour
$15°$	$=$	$60$ minutes	Convert hours to minutes
$15°$ $-:15$	$=$	$60$ minutes $-:15$	Divide both sides by $15$
$1°$	$=$	$4$ minutes

$360°$	$=$	$24$ hours
$360°$ $-:24$	$=$	$24$ hours $-:24$	Divide both sides by $24$
$15°$	$=$	$1$ hour
$15°$	$=$	$60$ minutes	Convert hours to minutes
$15°$ $-:15$	$=$	$60$ minutes $-:15$	Divide both sides by $15$
$1°$	$=$	$4$ minutes

Time Difference and Longitudes 1

Try VividMath Premium to unlock full access

Quiz summary

Information

1. Question

Hint

Great Work!

2. Question

Hint

Correct!

3. Question

Hint

Keep Going!

Finding the Time Difference

4. Question

Hint

Fantastic!

Finding the Time Difference

5. Question

Hint

Excellent!

Finding the Time Difference

Quizzes

$1°$	$=$	$4$ minutes
$1°$ $xx86$	$=$	$4$ minutes $xx86$	Multiply $86$ to both sides
$86°$	$=$	$344$ minutes
$86°$	$=$	$5$ hours $44$ minutes

$1°$	$=$	$4$ minutes
$1°$ $xx170$	$=$	$4$ minutes $xx170$	Multiply $170$ to both sides
$170°$	$=$	$680$ minutes
$170°$	$=$	$11$ hours $20$ minutes

$48°$ $xx4$	$=$	$192$ minutes
	$=$	$3$ hours $12$ minutes

$59°$ $xx4$	$=$	$236$ minutes
	$=$	$3$ hours $56$ minutes

$117°$ $xx4$	$=$	$468$ minutes
	$=$	$7$ hours $48$ minutes