Topics from July 2018
- Why is forestry important?
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- Can sunlight provide power?
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- How do we obtain oil?
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- How is coal formed?
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- How is gold mined?
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- How is mining carried out?
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- What do we obtain by mining?
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- How is a photograph produced?
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- How does printing work?
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- What are explosives?
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- What type of materials are plastics?
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- Where does rubber come from?
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- How is steel made?
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- What is a modem?
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- How do mobile phones work?
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- How do we receive messages and TV pictures from a satellite orbiting the Earth?
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- How can television pictures be transmitted by radio waves?
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- What is telecommunications?
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- How does a telephone work?
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- What are communications?
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- How do helicopters fly?
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- How does a hovercraft work?
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- Why doesn’t a steel ship sink?
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- What is the difference between petrol and a diesel engine?
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- How do jet engines work?
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- How does an aeroplane fly?
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- What is infinity?
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- What is geometry?
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- Who invented our modern numerals?
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- How did Roman numbering work?
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- What are decimals?
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- What is the metric system?
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- Why do we need to use numbers?
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- How were calendars developed?
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- What is Greenwich Mean Time?
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- How do we measure time accurately?
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- How is time calculated?
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- What is a sundial?
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- Why do we need to measure time?
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- How can you lift very heavy objects without using powerful machinery?
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- How does a gyroscope stand up?
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- What is centrifugal force?
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- Why is it so hard to start a heavy object moving?
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- Why do falling objects keep travelling faster?
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- What is friction?
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- What stops us from falling off the Earth?
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- What is a force?
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- Can sound hurt?
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- How can sound detect submarines?
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- What causes thunder?
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- What is the sound barrier?
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- What is the Doppler Effect?
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- What is an echo?
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- How many sounds can we hear?
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- What is sound?
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- What are lasers?
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- How can light travel along a cable?
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- What is a spectrum?
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- How is light produced?
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- How fast does light travel?
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- What is light?
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- What are isotopes?
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- What does half-life mean?
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- What is nuclear fusion?
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- What is a nuclear reactor?
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- How do nuclear weapons work?
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- How do nuclear power stations work?
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- How is nuclear energy produced?
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- How does radar work?
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- How do computers work?
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- What are silicon chips?
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- What does ‘electronics’ mean?
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- What is a printed circuit?
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- How does radio communication work?
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- What are radio waves?
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- How do animal make use of magnetic forces?
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- How can a train float in the air?
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- What is an electromagnet?
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- What are magnets made of?
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- Magnetic motors
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- How does a compass work?
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- Which substances are magnetic?
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- Why do some metals stick to magnets?
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- What is a magnetic field?
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- What is magnetism?
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- What is a superconductor?
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- What is alternating current?
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- How does electricity produce heat and light?
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- How do batteries work?
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- How is electricity made?
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- What is an insulator?
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- What is Electricity?
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- Why don’t people fall off the Earth?
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- Why do rainbows form?
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- What is infrared energy?
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- What are microwaves?
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- Forms of Energy
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- Where does the Earth’s energy come from?
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- Forms of Energy
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- Natural Properties
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- Natural Properties
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- Natural Properties
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- What are plastics?
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- Can metals float in water?
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- What is burning?
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- What happens when a chemical substance dissolves?
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- How are crystals formed?
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- What is glass?
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- What are metals?
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- Quicksilver
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- Quicksilver
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- What are gases?
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- How does radiation change substances?
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- What are organic compounds?
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- How is it possible to make new elements?
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- What is radioactivity?
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- Which are the lightest and heaviest elements?
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- What is the periodic table?
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- What is antimatter?
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- Who discovered the structure of the atom?
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- What are molecules?
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- What is ‘Quantum mechanics’?
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- How much space is in an atom?
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- What is at the centre of an atom?
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- Is an atom the smallest type of particle?
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- Can we see atoms?
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- When did early mathematics develop?
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- Who first devised the numerals that we use today?
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- Who founded the first alphabet?
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- What is the history of wrist watches?
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- Who was the first person to invent a clock?
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- What is the history of the sphygmomanometer?
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- Why is it said that the invention of the barometer was crucial in human history?
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- When was the stethoscope invented?
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- What is the history of syringes and hypodermic needles?
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- What are the origin, and the history of paper?
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- What is the history of pen?
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- When did the history of printing begin?
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- What is the history of the typewriter?
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- What is the history of the bicycle?
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- When did man first use motorcycles?
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- Why is the history of the bus said to be unique?
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- Who invented the car?
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- Which was the first motorized boat?
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- What is the history of trains?
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- What is the story of man’s first flight?
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- When was the first passenger airline established?
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- What is the history of photography?
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- Why is it said that the history of artificial organs dates back to the 5th century BC?
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- What is the history of hearing tools?
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- Who invented spectacles?
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- What is the history of anaesthesia?
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- Where did surgery originate?
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- When did the iconic invention of the computer take place?
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- Why is modern digital recording considered as a turning point?
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- Why is modern digital recording considered as a turning point?
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- What is the history of programmed broadcasting?
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- When was television invented?
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- What is the history of radio?
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- When did the history of magnetic recording begin?
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- When was the first gramophone invented?
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- Why is the history of movies remarkable?
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- When was the thermometer invented?
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- When did the history of the telescope and binoculars begin?
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