Which state has the most volcanoes in the US?

Which state has the most volcanoes in the US?

There are about 169 volcanoes in the United States that scientists consider active. Most of these are located in Alaska, where eruptions occur virtually every year.

Is the piano a string instrument?

There are also problems with classifying certain keyboard instruments. For example, the piano has strings, but they are struck by hammers, so it is not clear whether it should be classified as a string instrument or a percussion instrument.

What does it mean to have an opposable thumb?

They are called opposable because the thumb can be moved around to touch the other fingers, which gives people the ability to grasp things. Most primates (humans, apes, and Old World monkeys) and some other animals have opposable thumbs.

Do candles evaporate?

As a candle burns the wax melts and is drawn up the wick like when you dip a paper towel into a cup of water. The melted wax in the wick gets evaporated due to the heat from the flame, this dries the wick out which allows it to draw up more melted wax at a constant rate.

Where does the phrase “rule of thumb” come from?

The phrase “rule of thumb” is derived from an old English law which stated that you couldn’t beat your wife with anything wider than your thumb.

How can you tell if a pearl is real?

The Tooth Test – Rub the pearls lightly along the biting edge of your upper front teeth. If they feel slightly rough, sandy or gritty, it’s likely they are cultured or natural pearls because of the layers of nacre that have formed over time. If they feel smooth or glassy, they are probably imitations.

Who wrote the first modern chemistry textbook?

Antoine Lavoisier (lah-vwah-ZHAY), 1743-1794, introduced quantitative measurement into the study of chemistry with his discovery of the law of conservation of mass. He discovered the role of oxygen in combustion and established the principles for naming chemicals. He wrote the first modern chemistry textbook in 1789.

Why is it dangerous to wake a sleepwalker?

It is a myth that it is dangerous to wake up a sleepwalker because it may cause them a heart attack, shock, brain damage, or something else. It is not a myth that it is dangerous to wake up a sleepwalker because of the possible injury the sleepwalker may inflict upon themselves or the person waking them up.