A car, a Vespa and a skateboard all have this underneath to help them move.
What is an axle and wheels?
100
This household object makes life a lot brighter at night.
What is the light bulb?
100
First invented by the Romans, this material is super strong and helped build the Roman Empire. It begins as water mixed with cement, gravel sand...
What is concrete?
100
In all electronic devices, these gadgets have tiny circuits attached to silicon wafers. Powers handys, laptops, iPads...
What are microchips?
100
Invented in the 1930s to detect objects using radio waves, this word has five letters and begins and ends with the same two letters.
What is RADAR?
200
This spiral-shaped object helps keep things together or hangs pictures on a wall.
What is a screw?
200
A place in the kitchen where you will find yummy treats.
What is the refrigerator?
200
Made from plants or refined crude oil, this material can be molded into many shapes, won't break if you drop it and makes packaging, baby toys and water bottles.
What is plastic?
200
Fits in your pocket, keeps you connected and lets you play games.
What is a cell phone?
200
Orbiting the earth, this helps chart the weather and manage communications. The first was Sputnik in 1957.
What is a satellite?
300
This clever combination of a rope and a grooved wheel helps haul heavy objects up in the air.
What is a pulley?
300
Uses high energy waves to reheat your food.
What is a microwave?
300
This material helps plants grow in places where the soil isn't very rich. It can be organic (like manure) or inorganic (ammonia). But it can be too much of a good thing!
What is fertilizer?
300
This gadget has a user interface, memory and a microprocessor that can program almost anything. Helps operate cash registers, design books, add special effects to movies and fly a plane without the pilot.
What is a computer?
300
Uses a single frequency, focused light to correct eye sight or remove tattoos!
What is a laser?
400
This a coiled object that "springs" up, releasing all its pent-up energy.
What is a spring?
400
The telephone was invented in 1876 by an American.
Who was Alexander Graham Bell?
400
This explosive material was invented by the Chinese around the 800s B.C.
What is gunpowder?
400
Found in cell phones (handy), computers, telescopes, medical probes and on the space shuttle! Captures the action and gives you the "whole picture."
What is a digital camera?
400
A vast network of interconnected computers. The World Wide Web is only a tiny surface part of this super tech invention.
What is the Internet?
500
A brainy Greek who invented a screw that moves water and a "Death Ray" to terrorize enemies of the Greeks.
Who was Archimedes?
500
This layer of aluminum coated on both sides in plastic can store all your digital data, or play a movie.
What is a DVD?
500
Invented by the Chinese, this material may seem "old school" rather than futuristic, but it made reading and writing much easier and more available. We still use it today.
What is paper?
500
Small and portable, this gadget can be the back up location of your homework.
What is a memory stick?
500
The very clever fellow who invented the World Wide Web.