#317 How does crop rotation work?
How does crop rotation work? By alternating crops to give the soil a rest and to replace nutrients that are removed. People […]
#316 How does a steam engine work?
How does a steam engine work? By taking the energy contained in coal and making heat. Then using the heat to turn […]
#315 How tall could a skyscraper be?
How tall could a skyscraper be? Theoretically 69.1 km tall, but practically, about 2 km. The tallest building in the world at […]
#314 When did the Egyptian Empire start to decline?
When did the Egyptian Empire start to decline? It peaked during the reigns of Ramesses II and Ramesses III from 1279 BC […]
#313 Where did the names of the continents come from?
Where did the names of the continents come from? Generally, from Greek and Latin. There are seven continents and one continent that […]
#312 What is virgin olive oil?
It is olive oil that is made cold-pressed, without heat or chemicals. Olive oil has been used for thousands of years. Olives […]
#311 How does an EEG (electroencephalogram) work?
How does an electroencephalogram work? By measuring electrical activity in different parts of the brain using electrodes on the scalp. EEGs are […]
#310 Why were the Wright brothers able to fly in 1903?
Why were the Wright brothers able to fly in 1903? Because they employed a very methodical and scientific method and because of […]
#309 Is nuclear waste dangerous?
Is nuclear waste dangerous? It is if it isn’t handled properly. This was interesting to research. All of the sites I looked […]
#308 Why did the Olympics restart in 1896?
Why did the Olympic Games restart in 1896? Frenchman Pierre de Coubertin fought to restart the Olympics because he thought they would […]