Earth, Moon and Sun 0.0 / 5 ? AstronomyEarth, Moon and SunGCSEAQA Created by: emily_wCreated on: 30-03-14 16:23 How long is a lunar period? 29.5 days 1 of 18 What is a solar day? The time between solar transits of the meridian 2 of 18 What is a sidereal day The time taken for the Earth to spin on its axis relative to the stars. 4 minutes shorter than a solar day. 3 of 18 Why do the Sun and Moon appear the same size? The Sun is 400x bigger than the Moon and 400x further away. 4 of 18 What is the Earth's rotation period? 23 hours and 56 minutes 5 of 18 How long does it take the Earth to rotate through 1 degree? 4 minutes 6 of 18 Why does the Moon appear red at a total lunar eclipse? The Earth, Moon and Sun are aligned so light from the Sun is scattered by the Earth's atmosphere before it hits the Moon, making it appear red. 7 of 18 What is the diameter of the Earth? 13,000 km 8 of 18 How much longer is the Moon's phase cycle than its orbital period? 2.2 days 9 of 18 Why is the Moon's phase cycle longer than its orbital period? The Earth orbits the Sun, so the Moon needs more time to get back to its starting position. 10 of 18 Which part of the Sun is visible at a solar eclipse? Corona 11 of 18 What is latitude? The distance North to South 12 of 18 What is longitude? The distance East to West 13 of 18 What is the meridian? An imaginary arc going from North to South, directly above the observer 14 of 18 What are the geographic poles? The most northern/southern parts of the Earth 15 of 18 What are the magnetic poles? Where the magnetic field is attracted downwards 16 of 18 What are the tropics? Two imaginary lines where the Sun is directly overhead at noon on either solstice. 17 of 18 What is the zenith? The point directly above the observer's head 18 of 18
Astronomy - Chapter 1 - Earth, Moon and Sun - SUN - EARTH - MOON INTERACTIONS 5.0 / 5 based on 4 ratings
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