The wonderful world of science

Which ancient invention used gravity and flowing water to tell time precisely, even at night?

• Sun clock

• Clepsydra

• Candle timer

• Astrolabe

• None of these

The first known surgical operations were performed by ancient people using what type of tools?

• Wooden sticks

• Bronze knives

• Flint blades

• Iron rods

• Can't say

Early glass was made by accident when ancient people (a)   .

Draw an ancient-style star map as if you were a sky-watching scientist 3,000 years ago—no telescopes, just the night sky and your imagination!

Why did ancient people carve star patterns into stones and walls?

• To decorate caves

• To keep track of harvest seasons

• To play games

• To scare away animals

• None of these

The Antikythera mechanism, found in a shipwreck, is believed to be an ancient:

• Weapon launcher

• Music player

• Analog computer

• None of these

• Water pump

Which ancient civilization calculated the Earth's circumference with surprising accuracy using only a stick, shadows, and math?

• Babylonians

• Egyptians

• Greeks

• Chinese

• Roman

Draw a scene from ancient times that includes at least four of these inventions working together:

The wheel

Clothing made from natural materials

A simple boat

Stone tools

A fire

A sundial or early time-telling tool