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Our Solar System 1. Our Solar System consists of the Sun and 9 planets 2. The Sun is a star 3. Planets look like stars but are only visible because of light reflected from the Sun. Our Solar System The Planets Our Solar System Day and Night 1. It takes 24 hours (1 day) for the Earth to spin once on its axis. 2. The half of the Earth facing the Sun is in daylight, the other half of the Earth is in night. Day and Night Day and Night Seasons 1. It takes the Earth 365.25 days (1 year) to orbit the Sun. 2. When the Northern Hemisphere is tilted towards the Sun it is summer 3. When the Northern Hemisphere is tilted away from the Sun it is winter 4. In the summer, the Sun’s rays are concentrated over a small area of land 5. In the winter, the Sun’s rays are spread out The Seasons Seasons Seasons The Seasons The Seasons The Moon 1. The Moon orbits the Earth once every 28 days 2. The Moon appears to change shape because we see different amounts of the Moon’s lit half at different times 3. The Moon’s gravity causes high and low tides 4. The height of the high tide depends on the position of the Sun and Moon Phases of the Moon Phases of the Moon Tides Spring and Neap tides Quiz Wordsearch