Ch 29.2 Notes and Vocab Flashcards

1
Q

Is an area 15 degrees wide in which the time is the same

A

Time Zone

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2
Q

is the spinning of Earth on its axis, an imaginary line drawn from Earth’s North Pole to its South Pole

A

rotation

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3
Q

is the motion of Earth in an elliptical orbit around the Sun.

A

revolution

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4
Q

defined as the plane of Earth’s orbit around the Sun

A

ecliptic

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5
Q

occurs when Earth’s rotational axis is tilted directly toward the Sun or away from the Sun

A

solstice

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6
Q

When Earth’s rotational axis is perpendicular to a line drawn from the center of Earth to the center of the Sun

A

equinox

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7
Q
  1. Who devised a method of timekeeping around 3000 B.C.?
A

The Babylonians

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8
Q
  1. What was the symbol for degree taken from?
A

From the Babylonians symbol of the sun

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9
Q
  1. How many degrees does the Earth spin in one day?
A

360 degrees

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10
Q
  1. How many hours does it take the earth to make one full rotation?
A

24 hours

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11
Q
  1. How many degrees does the Earth spin in one hour?
A

15 degrees

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12
Q
  1. What direction does the sun rise?
A

east

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13
Q
  1. What direction does the sun set?
A

west

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14
Q

8.True or False: All time zones are the exact same size?

A

a. False, they are modified to fit around cities, states, and country borders, and other key sites.

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15
Q
  1. How many time zones are there in the world?
A

24 time zones

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16
Q
  1. Which direction do you move to add hours to the time?
A

east

17
Q
  1. Which direction do you move to subtract hours from the time?
A

west

18
Q
  1. How many times zones are there in the United States?
A

6 time zones

19
Q
  1. What are the names of the time zones?
A

Hawaii-Aleutian time, Alaska time, Pacific time, Mountain time, Central time and Eastern time

20
Q
  1. What is a solar day?
A

Is when the sun is directly above us at noon and the sun is directly above us again the next day

21
Q
  1. What is a sidereal day?
A

When Earth rotates based on a star

22
Q
  1. What are two main reasons for seasons?
A

the tilt of a planet’s axis and its orbit around the sun

23
Q
  1. Which 2 seasons have a solstice?
A

summer and winter

24
Q
  1. Which month is the summer solstice?
A

June

25
Q
  1. Which month is the winter solstice?
A

December

26
Q
  1. Which two seasons are equinoxes?
A

Spring and Fall

27
Q
  1. Which month is the spring equinox?
A

March

28
Q
  1. Which month is the fall equinox?
A

September

29
Q
  1. When is the longest day of the year?
A

Summer Solstice; June 21

30
Q
  1. When is the shortest day of the year?
A

Winter Solstice; December 21

31
Q
  1. When are the days almost 12 hours of the day and 12 hours of night?
A

March and September; Spring and Fall equinox