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physical science > chapter 29.2 > Flashcards

chapter 29.2 Flashcards

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Biology 101 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 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

is defined as the plane of earth orbit around the sun

A

ecliptic

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5
Q

occurs when earth rotational axis is tilted directly toward the sun or away from the sun

A

solstice

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6
Q

earth rotation 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

who devised a method of timekeeping 300 BC

A

Babylonians

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8
Q

what was the symbol for degrees take from

A

The Babylonian symbol for the sun

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9
Q

how many degrees does the earth spin in one day

A

360 degrees

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10
Q

How many hours does it take the earth to make one full rotation?

A

24 hours

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11
Q

How many degrees does the earth spin in one hour?

A

15 degrees

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12
Q

What direction does the sun rise?

A

East

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13
Q

What direction does the sun set?

A

West

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14
Q

True or false. All time zones are the exact same size?

A

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

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15
Q

How many time zones are there in the world?

A

24 time zones

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16
Q

Which direction do you move to add hours to the time?

A

East

17
Q

Which direction do you move to subtract hours from the time?

A

West

18
Q

How many time zones are there in the United States?

A

6 time zones

19
Q

What are the names of the time zones?

A

Mountain time zone Eastern time zone Pacific time zone Alaskan time zone Central time zone Hawaiian time zone

20
Q

What is a solar day?

A

The earth’s rotation from the sun in the sky from noon one day to noon the next day.

21
Q

What is a sidereal day?

A

When a certain star rises above the horizon until that same star rises again

22
Q

What are the two main reasons for seasons?

A

The axis tilt and how close earth is to the sun

23
Q

Which 2 seasons have a solstice?

A

Summer and Winter

24
Q

Which month is the summer solstice?

A

June

25
Q

Which month is the winter solstice?

A

December

26
Q

Which two seasons are equinoxes?

A

Spring and Fall

27
Q

Which month is the spring equinox?

A

March

28
Q

Which month is the fall equinox?

A

September

29
Q

When is the longest day of the year?

A

During the Summer Solstice

30
Q

When is the shortest day of the year?

A

During the Winter Solstice

31
Q

During the Winter Solstice

A

During the spring equinox and during the fall equinox

physical science (14 decks)

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