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- 1. Multiple ChoiceIn ancient times, why would a cloudy day make it hard to know what time it was?Without the sun, you can't use a shadow clockShadow clocks DO NOT need sunlightShadow clocks work no matter the weather
- 2. Multiple ChoiceSay one morning the Earth suddenly stopped spinning. Would a shadow clock still work?Yes, because the sun still moves.No, a shadow clock only works because the shadow moves across the dial. No shadow means no time.
- 3. Multiple ChoiceThe planet Mercury takes 176 days to do one spin around its pole. Compared to the Earth, would the Sun appear to move more quickly across Mercury's sky or more slowly? (Earth = 24 hours)The sun would move faster across Mercury's sky, because Mercury spins faster than the Earth.The Sun would appear to move much more slowly across Mercury's sky than Earth's sky, because Mercury spins much more slowly than the Earth.It would move at the same rate.
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