 |  The Earth-Sun-Moon System 12 Flashcards |  Start |
 | What causes the changing phases of the Moon as observed from Earth? |  Card: 1 / 12 |
| The Moon's phases change due to positions.
| Card: 2 / 12 |
| Fill in the blank: The boundary between the lit side and the dark side of Earth during its rotation is called the ___ line. | Card: 3 / 12 |
| Terminator | Card: 4 / 12 |
| True or False: A solar eclipse can occur during the Full Moon phase. | Card: 5 / 12 |
| False. A solar eclipse occurs only during the New Moon phase when the Moon is positioned between Earth and the Sun. | Card: 6 / 12 |
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| What is the primary reason for the variation in Earth's seasons? | Card: 7 / 12 |
| Earth's seasons result from axial tilt.
| Card: 8 / 12 |
| Riddle: I am a natural satellite, always facing the same side to my planet. What am I? | Card: 9 / 12 |
| The Moon | Card: 10 / 12 |
| How long does it take for Earth to complete one revolution around the Sun? | Card: 11 / 12 |
| Earth takes approximately 365.25 days to complete one revolution around the Sun, which we define as one year. | Card: 12 / 12 |
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