Page 115 - SST Class 06

B. Match the following :
1. Rotation u u The Earth’s position when it is farthest from the Sun.
2. Revolution u u The period when the Sun shines over a tropic vertically.

3. Ellipse u u The period when the Sun shines over the Equator.
4. Perihelion u u The spinning of the Earth on its axis.
5. Aphelion u u The Earth’s one round around the Sun.
6. Solstice u u The elongated path of the Earth.
7. Equinox u u The Earth’s position when it is nearest to the Sun.

C. Fill in the blanks with the help from the box :
ellipse, equinox, aphelion, rotation, 21 June, perihelion, revolution
1. The Earth’s motion on its axis is called ____________ .
2. The Earth’s motion around the Sun is called ____________ .

3. The elongated orbit of the Earth is called the ____________ .
4. When the Earth is nearest to the Sun, it is called ____________ and when it is farthest, it is called
____________ .
5. The situation of equal day and night is called the ____________ .
6. The sun shines over the Tropic of Cancer vertically on ____________ .

D. Write ‘T’ for true and ‘F’ for false :
1. The Earth’s spinning on its axis is called revolution.
2. The Earth’s orbit is circular in shape.
3. Aphelion shows the condition when the Earth is farthest from the Sun.
4. The Northern Hemisphere and Southern Hemisphere experience the same kind of season at
one time.

5. In the winter solstice, it is summer in the Southern Hemisphere.
6. Days and nights are equal on the equinoxes.
E. Answer in one word or phrase:

1. Which of these moves—Earth or Sun?
2. How are days and nights caused?
3. What angle does the Earth make with the orbital plane?
4. What is it called when the Earth is nearest to the Sun?
5. What is it called when the Sun shines vertically over the Tropic of Capricorn?

6. On what days does the Sun shine vertically over the Equator?
F. Answer the questions in brief :
1. How is the travel in a train similar to the motions of the Earth?
2. What do you mean by the orbital plane of the Earth?

3. How are days and nights not of the same length?
4. What is a leap year? Why does the month of February have 29 days in a leap year?
5. What do you mean by winter solstice?
6. What seasons are caused due to the equinox?
Motions of the Earth
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