12/05/2001
10:53
Page 3
Name
Date
What Time Is It?
ES0405
Use another sheet of paper if you need extra space to write complete answers.
1 Which parts of Earth are experiencing day?
●
●
ocean, and about half of the Pacific ocean are
experiencing day.
Shadows cast by objects move in a clockwise direction
in the northern hemisphere and counterclockwise in
2 Which parts of Earth are experiencing night?
Europe, Asia, Africa, Australia, and about half of the
Pacific Ocean are experiencing night.
●
9 What happens to the shadow cast by an
●
object as the sun appears to move across the
sky?
North America, South America, most of the Atlantic
the southern hemisphere.
10 If Earth rotates 360 degrees every 24 hours,
●
how many degrees does it rotate each hour?
3 In what direction does Earth rotate?
Earth rotates from west to east. Viewed from above the
North Pole, the direction of Earth’s rotation is
counterclockwise.
4 From what direction does the sun appear to
●
rise each day?
The sun appears to rise in the east.
5 In what direction does the sun appear to set
●
each day?
The sun appears to set in the west.
6 When it is sunrise on the east coast of the
●
United States, where on Earth is the sun
setting?
The sun is setting along the eastern edge of Asia.
In one hour the Earth rotates 15 degrees.
11 How many degrees of longitude separate
●
Cairo and Calcutta, and how many time
zones apart are they?
Sixty degrees of longitude separate the two cities. They
are four time zones apart.
12 Is it earlier in the day in Cairo or Calcutta?
●
The hour is earlier in Cairo because it has not yet
experienced sunrise.
13 When it is 6:00 A.M. in Calcutta, what time is
●
it in Cairo?
It is 2:00 A.M.in Cairo.
14 How many hours apart are St. Louis,
●
Missouri, U.S.A. and Kyoto, Japan?
●
7 When it is sunrise on the west coast of Africa,
approximately what “suntime” is it in India?
It is about noon in India.
8 Sketch the regions of night and day onto the
●
map on your worksheet. Label the sunrise
and the sunset boundaries. Circle the
position of India.
Nine hours separate the two cities counting from St.
Louis west to Japan; fifteen hours separate them
counting from St. Louis east to Japan.
15 During what hours that you are awake can
●
you call your friend so that it is not the
middle of the night in Japan?
If you call your friend between 6:00 P.M. and 10:00 P.M.
in St. Louis, then it will be between 9:00 A.M. and 1:00
P.M.in Kyoto.
Earth Science
Internet Investigations Guide
19
Chapter 4
Internet Investigation
ES0405_final