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Q1. In Activity 11.1, students observe the Moon every day for a month. When during the day should the Moon be observed in the first 15 days and the next 15 days?
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Q2. When more than half of the illuminated portion of the Moon is seen from Earth, the phase is called
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Q3. When less than half of the illuminated portion of the Moon is seen from Earth, the phase is called
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Q4. On a full Moon day, where in the sky is the Moon when the Sun is rising in the East?
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Q5. When the bright part of the waning Moon has decreased to a half-circle shape, where is the Moon in the sky at sunrise?
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Q6. If the Moon rises in Pune today at 6:00 p.m., approximately when can it be expected to rise tomorrow?
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Q7. In Activity 11.2, the student holds a ball on a stick with one hand and stands near a lamp. When the ball is held at position A — opposite to the direction of the lamp — what phase of the Moon does the student observe?
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Q8. On which day of the lunar cycle can a lunar eclipse occur?
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Q9. In Activity 11.3, students fix a 1 m stick vertically in the ground and mark a dot at the shadow tip every minute from about 11:00 a.m. to 1:10 p.m. They identify the shortest shadow to find
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Q10. A lunar year of 12 lunar months is shorter than a solar year by about
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Q11. Which of these years was NOT observed as a leap year in the Gregorian calendar?
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Q12. In India, the apparent northward movement of the Sun's rising point from December to June is called
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Q13. Which of the following is NOT one of the twelve months of Indian luni-solar calendars?
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Q14. In a regular (non-leap) year, the Indian National Calendar begins on
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Q15. Most artificial satellites mentioned in Chapter 11 orbit about how high above the Earth's surface, and take roughly how long to complete one orbit?
