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What’s the difference between a simple machine and a complex machine?
Simple machines don’t have many moving parts.
Why didn’t early humans worry about the time?
Because they hunted and worked during the day and slept at night.
How did Egyptians tell the time?
By the sun - with huge towers.
What’s the problem with a sundial?
You can’t tell the time when it’s cloudy or at night.
Where did mechanical clocks come from?
Europe.
What’s an analogue clock?
A clock with hands
