INDIAN SCHOOL MUSCAT
MIDDLE SECTION
DEPARTMENT OF SOCIAL SCIENCE
ROTATION AND REVOLUTION
NAME: ______________________ CLASS VI SEC: ____ ROLL NO: _____ DATE: ___.06.2015
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I. FILL IN THE BLANKS:
1. One __________________ of the earth on its axis takes 24 hours.
2. The side of the earth facing the sun has ___________ while the other side has__________.
3. It is the _____________________ movement of the earth on its _______ which causes day and night.
4. The duration of sunlight at a place varies with _____________ .
5. The orbit of the earth is _____________________ in shape.
6. A leap year has ___________ days.
7. One revolution of earth around the sun takes ____________ days.
8. On 21st June, _____________________ pole is tilted towards the sun.
9. The term ‘equi’ means ______________ and ‘nox’ means _______________.
10. The ____________________ of the earth causes seasons.
11. Leap year comes after every ______ years.
12. During _______________ solstice, places south of the Antarctic circle experience only daylight and no
night.
13. The earth is inclined from the vertical at an angle of ______ .
14. Days are shorter during __________________ season.
II. NAME THE FOLLOWING:
1. The circle that separates day and night.___________________
2. Two days in a year when the direct rays of the sun fall on the equator causing equal day and night.
__________________
3. This equinox occurs on 23rd September._____________
4. An imaginary line joining the two poles through the centre of the earth.____________
5. Movement of the earth around its axis._____________________
III. State True or False.
1.
2.
3.
4.
5.
During summer solstice , the South Pole is inclined towards the sun. ____________
It is because of rotation, day and night take place.____________
Winter solstice occurs on 21st June.________________
During summer solstice the sun rays fall directly on the tropic of cancer. _____________
The earth rotates from west to east. ____________
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IV. Unscramble the following words with the help of the given clues:
1.
2.
3.
4.
5.
LNONIACITNI: (231/2) _______________________
TBOIR: (elliptical)____________________________
SESNSAO:( caused by revolution) ___________________________
OIQXUEN: ( 23rd Sep. or 21st March.) ____________________________
CLEISTSO: ( longest and shortest days) ____________________________
V. a. Observe the diagram and fill in the blanks:
___________
___________
__________
__________
__
___________
___________
_____________
___________
___________
b.
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VI Answer in ONE point:
1.
2.
3.
4.
5.
6.
How are days and night caused?
What is circle of illumination.?
Why does the duration of day and night vary?
What will happen if earth stops spinning?
How are seasons caused?
What do you mean by the term solstice?
VII. Answer in THREE points:
1. Differentiate between rotation and revolution.
VII. Answer in FOUR points:
1. Explain a leap year.
2. Differentiate between summer solstice and winter solstice.
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FUN FACTS
Why the month of February has 28 days???
According to a popular legend, July was named after Julius
Caesar and hence it had 31 days.Later,when Augustus Caesar took over the
Roman empire ,he wanted August, the month named after him, to have
31days as well. Hence, the two extra days were taken from February, which
was then left with 28days.However,some historians don’t agree with this reasoning. They believe
February always had 28 days ever since the time of King Numa Pompilius. He decided that a year
would have 355days,the length of 12 lunar cycles. Back then, even numbers were considered
unlucky. So he created seven months with 29days, and four with 31.Since he now needed one short
even-numbered month, he chose February, as it was considered ,as it was considered the least
favourite month for it arrived during the middle winter. And hence, it was given only 28days.
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INDIAN SCHOOL MUSCAT
MIDDLE SECTION
DEPARTMENT OF SOCIAL SCIENCE
ROTATION AND REVOLUTION
NAME: ______________________ CLASS VI SEC: ____ ROLL NO: _____ DATE: ___.05.2015
*********************************************************************************
I. FILL IN THE BLANKS:
1. One rotation of the earth on its axis takes 24 hours.
2. The side of the earth facing the sun has day while the other side has night.
3. It is the spinning movement of the earth on its axis which causes day and night.
4. The duration of sunlight at a place varies with seasons .
5. The orbit of the earth is elliptical in shape.
6. A leap year has 366 days.
7. One revolution of earth around the sun takes 365 14days.
8. On 21st June, North pole is tilted towards the sun.
9. The term ‘equi’ means equal and ‘nox’ means night.
10. The revolution of the earth causes seasons.
11. Leap year comes after every 4 years.
12. During winter solstice, places south of the Antarctic circle experience only daylight and no night.
13. The earth is inclined from the vertical at an angle of 231/2 .
14. Days are shorter during winter season.
II. NAME THE FOLLOWING:
1. The circle that separates day and night. The circle of illumination
2. Two days in a year when the direct rays of the sun fall on the equator causing equal day and night.
equinox
3. This equinox occurs on 23rd September. Autumnal/Spring Equinox
4. An imaginary line joining the two poles through the centre of the earth. axis
5. Movement of the earth on its axis. Rotation
III. State True or False.
1.
2.
3.
4.
During summer solstice , the South Pole is inclined towards the sun. False
It is because of rotation, day and night take place. True
Winter solstice occurs on 21st June. False
The earth rotates from west to east. True
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5. During summer solstice the sun rays fall directly on the tropic of cancer. True
IV. Unscramble the following words with the help of the given clues:
1.
2.
3.
4.
5.
LNONIACITNI: (231/2) INCLINATION
TBOIR: (elliptical) ORBIT
SESNSAO:( caused by revolution) SEASONS
OIQXUEN: ( 23rd Sep. or 21st March.) EQUINOX
CLEISTSO: ( longest and shortest days) SOLSTICE
IV. Observe the diagram and fill in the blanks:
___________
___________
__________
__________
__
___________
___________
_____________
___________
___________
b.
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V. Diagrams to be drawn in the notebook:
1. Inclination of the earth’s axis.
2. The circle of illumination.
3. Revolution of the earth around the sun and the four seasons.
VI. Answer in ONE point:
1.
2.
3.
4.
5.
6.
How are days and night caused?
What is circle of illumination.?
Why does the duration of day and night vary?
What will happen if earth stops spinning?
How are seasons caused?
What do you mean by the term solstice?
VII. Answer in THREE points:
1. Differentiate between rotation and revolution.
VII. Answer in FOUR points:
1. Explain a leap year.
2. Differentiate between summer solstice and winter solstice.
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INDIAN SCHOOL MUSCAT
MIDDLE SECTION
DEPARTMENT OF SOCIAL SCIENCE
ROTATION AND REVOLUTION
Std.VI
1. ANSWER IN ONE POINT:
1. How are days and night caused?
 The spinning of the Earth on its axis from west to east causes day and night.
2. What is circle of illumination.
 The circle that separates areas of light and darkness on the earth is called circle of illumination.
3. Why does the duration of day and night vary?
 The duration of the day and night vary due to the inclination of the Earth’s axis.
4. What will happen if earth stops spinning?
 There will be night completely on one side and day on the other, life would not have been possible in
such extreme condition .
5. How are seasons caused?
 The revolution of the earth around the sun and the tilt of its axis cause the change in seasons.
6. What do you mean by the term solstice?
 Either of the two times in the year, when the sun reaches its highest or lowest point in the sky at noon ,
marked by the longest(summer solstice) and shortest days( winter solstice) is known as solstice.
II. Answer in THREE points:
1. Differentiate between rotation and revolution.
Rotation
Revolution
1.
Rotation is the spinning of the
Revolution is the Earth’s journey around
Earth on its axis.
the sun.
2.
One rotation of the earth around its Earth takes 3651/4th days to complete one
axis takes about 24hrs or one day. revolution
3.
Rotation causes day and night.
Revolution causes seasons.
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III. Answer in FOUR points:
1.



Explain a leap year.
Earth takes 365 1/4 days (1/4 day is equal to 6hrs) to complete one revolution.
We take 365 days as a single year.
The ¼ day of four consecutive years is added to make one full day, which is added to the month of
February in the fourth year.
 Thus every fourth year has 366 days and such a year is called a leap year.
2. Differentiate between summer solstice and winter solstice.
1.
2.
3.
4.
Summer solstice
The North Pole is tilted towards the
sun.
The direct rays of the sun fall on the
Tropic of Cancer.
The Northern hemisphere experiences
summer with 21st June being the
longest day.
The Southern Hemisphere during this
period experience winter and the days
are shorter and nights longer.
Winter solstice
The South pole is tilted towards the sun.
The direct rays of the sun fall on the
Tropic of Capricorn.
The Southern hemisphere has the summer
with 22nd December being the longest day.
The Northern hemisphere during this time
experience winter and the days are shorter
and nights longer.
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